<?xml version="1.0" encoding="US-ASCII" standalone="no"?>
<!--Generated by ThunderDome XBRL - 07:28PM UTC 2026-08-14--><xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:alce="http://www.alternusce.com/20260630" xmlns:country="http://xbrl.sec.gov/country/2026" xmlns:currency="http://xbrl.sec.gov/currency/2026" xmlns:dei="http://xbrl.sec.gov/dei/2026" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2020-01-21" xmlns:ecd="http://xbrl.sec.gov/ecd/2026" xmlns:enum2="http://xbrl.org/2020/extensible-enumerations-2.0" xmlns:exch="http://xbrl.sec.gov/exch/2026" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:naics="http://xbrl.sec.gov/naics/2026" xmlns:sic="http://xbrl.sec.gov/sic/2026" xmlns:srt="http://fasb.org/srt/2026" xmlns:srt-types="http://fasb.org/srt-types/2026" xmlns:stpr="http://xbrl.sec.gov/stpr/2026" xmlns:us-gaap="http://fasb.org/us-gaap/2026" xmlns:us-types="http://fasb.org/us-types/2026" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.alternusce.com/20260630">
  <xsd:import namespace="http://fasb.org/srt/2026" schemaLocation="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd"/>
  <xsd:import namespace="http://xbrl.sec.gov/ecd/2026" schemaLocation="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd"/>
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xsd:import namespace="http://xbrl.sec.gov/dei/2026" schemaLocation="https://xbrl.sec.gov/dei/2026/dei-2026.xsd"/>
  <xsd:import namespace="http://xbrl.sec.gov/exch/2026" schemaLocation="https://xbrl.sec.gov/exch/2026/exch-2026.xsd"/>
  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
  <xsd:import namespace="http://xbrl.sec.gov/currency/2026" schemaLocation="https://xbrl.sec.gov/currency/2026/currency-2026.xsd"/>
  <xsd:import namespace="http://xbrl.sec.gov/country/2026" schemaLocation="https://xbrl.sec.gov/country/2026/country-2026.xsd"/>
  <xsd:import namespace="http://xbrl.sec.gov/naics/2026" schemaLocation="https://xbrl.sec.gov/naics/2026/naics-2026.xsd"/>
  <xsd:import namespace="http://www.xbrl.org/dtr/type/2020-01-21" schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd"/>
  <xsd:import namespace="http://xbrl.org/2020/extensible-enumerations-2.0" schemaLocation="https://www.xbrl.org/2020/extensible-enumerations-2.0.xsd"/>
  <xsd:import namespace="http://xbrl.sec.gov/stpr/2026" schemaLocation="https://xbrl.sec.gov/stpr/2026/stpr-2026.xsd"/>
  <xsd:import namespace="http://xbrl.sec.gov/sic/2026" schemaLocation="https://xbrl.sec.gov/sic/2026/sic-2026.xsd"/>
  <xsd:import namespace="http://fasb.org/us-types/2026" schemaLocation="https://xbrl.fasb.org/us-gaap/2026/elts/us-types-2026.xsd"/>
  <xsd:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd"/>
  <xsd:import namespace="http://fasb.org/srt-types/2026" schemaLocation="https://xbrl.fasb.org/srt/2026/elts/srt-types-2026.xsd"/>
  <xsd:import namespace="http://fasb.org/us-gaap/2026" schemaLocation="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd"/>
  <xsd:annotation>
    <xsd:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="alce-20260630_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="alce-20260630_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="alce-20260630_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="alce-20260630_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="statement-document-and-entity-information" roleURI="http://www.alternusce.com/20260630/role/statement-document-and-entity-information">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">000 - Document - Document And Entity Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-condensed-consolidated-balance-sheets-current-period-unaudited" roleURI="http://www.alternusce.com/20260630/role/statement-condensed-consolidated-balance-sheets-current-period-unaudited">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">001 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-condensed-consolidated-balance-sheets-current-period-unaudited-parentheticals" roleURI="http://www.alternusce.com/20260630/role/statement-condensed-consolidated-balance-sheets-current-period-unaudited-parentheticals">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">002 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-condensed-consolidated-statements-of-operations-and-comprehensive-loss-unaudited" roleURI="http://www.alternusce.com/20260630/role/statement-condensed-consolidated-statements-of-operations-and-comprehensive-loss-unaudited">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">003 - Statement - Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-condensed-consolidated-statements-of-changes-in-shareholders-equity-unaudited" roleURI="http://www.alternusce.com/20260630/role/statement-condensed-consolidated-statements-of-changes-in-shareholders-equity-unaudited">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">004 - Statement - Condensed Consolidated Statements of Changes in Shareholders' Equity (Unaudited)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-condensed-consolidated-statements-of-cash-flows-unaudited" roleURI="http://www.alternusce.com/20260630/role/statement-condensed-consolidated-statements-of-cash-flows-unaudited">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">005 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-condensed-consolidated-supplemental-statements-of-cash-flow-unaudited" roleURI="http://www.alternusce.com/20260630/role/statement-condensed-consolidated-supplemental-statements-of-cash-flow-unaudited">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">006 - Statement - Condensed Consolidated Supplemental Statements of Cash Flow (Unaudited)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-1-organization-and-formation" roleURI="http://www.alternusce.com/20260630/role/statement-note-1-organization-and-formation">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">007 - Disclosure - Note 1 - Organization and Formation</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-2-going-concern-and-managements-plans" roleURI="http://www.alternusce.com/20260630/role/statement-note-2-going-concern-and-managements-plans">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">008 - Disclosure - Note 2 - Going Concern and Management's Plans</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-3-summary-of-significant-accounting-policies" roleURI="http://www.alternusce.com/20260630/role/statement-note-3-summary-of-significant-accounting-policies">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">009 - Disclosure - Note 3 - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-4-fair-value-measurements" roleURI="http://www.alternusce.com/20260630/role/statement-note-4-fair-value-measurements">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">010 - Disclosure - Note 4 - Fair Value Measurements</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-5-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity" roleURI="http://www.alternusce.com/20260630/role/statement-note-5-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">011 - Disclosure - Note 5 - EverOn Energy Joint Venture and Consolidation of Variable Interest Entity</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-6-other-longterm-assets" roleURI="http://www.alternusce.com/20260630/role/statement-note-6-other-longterm-assets">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">012 - Disclosure - Note 6 - Other Long-term Assets</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-7-accounts-payable" roleURI="http://www.alternusce.com/20260630/role/statement-note-7-accounts-payable">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">013 - Disclosure - Note 7 - Accounts Payable</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-8-accrued-liabilities" roleURI="http://www.alternusce.com/20260630/role/statement-note-8-accrued-liabilities">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">014 - Disclosure - Note 8 - Accrued Liabilities</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-9-taxes-recoverable-and-payable" roleURI="http://www.alternusce.com/20260630/role/statement-note-9-taxes-recoverable-and-payable">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">015 - Disclosure - Note 9 - Taxes Recoverable and Payable</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-10-convertible-and-nonconvertible-promissory-notes" roleURI="http://www.alternusce.com/20260630/role/statement-note-10-convertible-and-nonconvertible-promissory-notes">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">016 - Disclosure - Note 10 - Convertible and Non-convertible Promissory Notes</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-11-other-payables" roleURI="http://www.alternusce.com/20260630/role/statement-note-11-other-payables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">017 - Disclosure - Note 11 - Other Payables</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-12-commitments-and-contingencies" roleURI="http://www.alternusce.com/20260630/role/statement-note-12-commitments-and-contingencies">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">018 - Disclosure - Note 12 - Commitments and Contingencies</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-13-sale-of-spanish-subsidiaries" roleURI="http://www.alternusce.com/20260630/role/statement-note-13-sale-of-spanish-subsidiaries">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">019 - Disclosure - Note 13 - Sale of Spanish Subsidiaries</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-14-shareholders-equity" roleURI="http://www.alternusce.com/20260630/role/statement-note-14-shareholders-equity">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">020 - Disclosure - Note 14 - Shareholders' Equity</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-15-segment-and-geographic-information" roleURI="http://www.alternusce.com/20260630/role/statement-note-15-segment-and-geographic-information">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">021 - Disclosure - Note 15 - Segment and Geographic Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-16-income-tax-provision" roleURI="http://www.alternusce.com/20260630/role/statement-note-16-income-tax-provision">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">022 - Disclosure - Note 16 - Income Tax Provision</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-17-related-party" roleURI="http://www.alternusce.com/20260630/role/statement-note-17-related-party">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">023 - Disclosure - Note 17 - Related Party</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-18-subsequent-events" roleURI="http://www.alternusce.com/20260630/role/statement-note-18-subsequent-events">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">024 - Disclosure - Note 18 - Subsequent Events</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-significant-accounting-policies-policies" roleURI="http://www.alternusce.com/20260630/role/statement-significant-accounting-policies-policies">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995471 - Disclosure - Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-3-summary-of-significant-accounting-policies-tables" roleURI="http://www.alternusce.com/20260630/role/statement-note-3-summary-of-significant-accounting-policies-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995472 - Disclosure - Note 3 - Summary of Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-4-fair-value-measurements-tables" roleURI="http://www.alternusce.com/20260630/role/statement-note-4-fair-value-measurements-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995473 - Disclosure - Note 4 - Fair Value Measurements (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-5-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-tables" roleURI="http://www.alternusce.com/20260630/role/statement-note-5-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995474 - Disclosure - Note 5 - EverOn Energy Joint Venture and Consolidation of Variable Interest Entity (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-6-other-longterm-assets-tables" roleURI="http://www.alternusce.com/20260630/role/statement-note-6-other-longterm-assets-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995475 - Disclosure - Note 6 - Other Long-term Assets (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-7-accounts-payable-tables" roleURI="http://www.alternusce.com/20260630/role/statement-note-7-accounts-payable-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995476 - Disclosure - Note 7 - Accounts Payable (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-8-accrued-liabilities-tables" roleURI="http://www.alternusce.com/20260630/role/statement-note-8-accrued-liabilities-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995477 - Disclosure - Note 8 - Accrued Liabilities (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-9-taxes-recoverable-and-payable-tables" roleURI="http://www.alternusce.com/20260630/role/statement-note-9-taxes-recoverable-and-payable-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995478 - Disclosure - Note 9 - Taxes Recoverable and Payable (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-10-convertible-and-nonconvertible-promissory-notes-tables" roleURI="http://www.alternusce.com/20260630/role/statement-note-10-convertible-and-nonconvertible-promissory-notes-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995479 - Disclosure - Note 10 - Convertible and Non-convertible Promissory Notes (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-13-sale-of-spanish-subsidiaries-tables" roleURI="http://www.alternusce.com/20260630/role/statement-note-13-sale-of-spanish-subsidiaries-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995480 - Disclosure - Note 13 - Sale of Spanish Subsidiaries (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-14-shareholders-equity-tables" roleURI="http://www.alternusce.com/20260630/role/statement-note-14-shareholders-equity-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995481 - Disclosure - Note 14 - Shareholders' Equity (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-15-segment-and-geographic-information-tables" roleURI="http://www.alternusce.com/20260630/role/statement-note-15-segment-and-geographic-information-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995482 - Disclosure - Note 15 - Segment and Geographic Information (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-17-related-party-tables" roleURI="http://www.alternusce.com/20260630/role/statement-note-17-related-party-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995483 - Disclosure - Note 17 - Related Party (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-2-going-concern-and-managements-plans-details-textual" roleURI="http://www.alternusce.com/20260630/role/statement-note-2-going-concern-and-managements-plans-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995484 - Disclosure - Note 2 - Going Concern and Management's Plans (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-3-summary-of-significant-accounting-policies-details-textual" roleURI="http://www.alternusce.com/20260630/role/statement-note-3-summary-of-significant-accounting-policies-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995485 - Disclosure - Note 3 - Summary of Significant Accounting Policies (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-3-summary-of-significant-accounting-policies-summary-of-antidilutive-securities-details" roleURI="http://www.alternusce.com/20260630/role/statement-note-3-summary-of-significant-accounting-policies-summary-of-antidilutive-securities-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995486 - Disclosure - Note 3 - Summary of Significant Accounting Policies - Summary of Antidilutive Securities (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-4-fair-value-measurements-details-textual" roleURI="http://www.alternusce.com/20260630/role/statement-note-4-fair-value-measurements-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995487 - Disclosure - Note 4 - Fair Value Measurements (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-4-fair-value-measurements-summary-of-assets-and-liabilities-measured-at-fair-value-on-a-recurring-basis-details" roleURI="http://www.alternusce.com/20260630/role/statement-note-4-fair-value-measurements-summary-of-assets-and-liabilities-measured-at-fair-value-on-a-recurring-basis-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995488 - Disclosure - Note 4 - Fair Value Measurements - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-4-fair-value-measurements-summary-of-fair-value-assumptions-details" roleURI="http://www.alternusce.com/20260630/role/statement-note-4-fair-value-measurements-summary-of-fair-value-assumptions-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995489 - Disclosure - Note 4 - Fair Value Measurements - Summary of Fair Value Assumptions (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-4-fair-value-measurements-schedule-of-fair-value-liabilities-with-unobservable-inputs-details" roleURI="http://www.alternusce.com/20260630/role/statement-note-4-fair-value-measurements-schedule-of-fair-value-liabilities-with-unobservable-inputs-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995490 - Disclosure - Note 4 - Fair Value Measurements - Schedule of Fair Value Liabilities With Unobservable Inputs (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-4-fair-value-measurements-schedule-of-fair-value-liabilities-with-unobservable-inputs-details-parentheticals" roleURI="http://www.alternusce.com/20260630/role/statement-note-4-fair-value-measurements-schedule-of-fair-value-liabilities-with-unobservable-inputs-details-parentheticals">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995491 - Disclosure - Note 4 - Fair Value Measurements - Schedule of Fair Value Liabilities With Unobservable Inputs (Details) (Parentheticals)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-5-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-details-textual" roleURI="http://www.alternusce.com/20260630/role/statement-note-5-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995492 - Disclosure - Note 5 - EverOn Energy Joint Venture and Consolidation of Variable Interest Entity (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-5-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-assets-acquired-details" roleURI="http://www.alternusce.com/20260630/role/statement-note-5-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-assets-acquired-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995493 - Disclosure - Note 5 - EverOn Energy Joint Venture and Consolidation of Variable Interest Entity - Assets Acquired (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-5-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-pro-forma-information-details" roleURI="http://www.alternusce.com/20260630/role/statement-note-5-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-pro-forma-information-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995494 - Disclosure - Note 5 - EverOn Energy Joint Venture and Consolidation of Variable Interest Entity - Pro Forma Information (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-6-other-longterm-assets-schedule-of-capitalized-development-costs-and-other-longterm-assets-details" roleURI="http://www.alternusce.com/20260630/role/statement-note-6-other-longterm-assets-schedule-of-capitalized-development-costs-and-other-longterm-assets-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995495 - Disclosure - Note 6 - Other Long-term Assets - Schedule of Capitalized Development Costs and Other Long-Term Assets (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-7-accounts-payable-schedule-of-accounts-payable-details" roleURI="http://www.alternusce.com/20260630/role/statement-note-7-accounts-payable-schedule-of-accounts-payable-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995496 - Disclosure - Note 7 - Accounts Payable - Schedule of Accounts Payable (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-8-accrued-liabilities-schedule-of-accrued-liabilities-details" roleURI="http://www.alternusce.com/20260630/role/statement-note-8-accrued-liabilities-schedule-of-accrued-liabilities-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995497 - Disclosure - Note 8 - Accrued Liabilities - Schedule of Accrued Liabilities (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-9-taxes-recoverable-and-payable-schedule-of-taxes-recoverable-details" roleURI="http://www.alternusce.com/20260630/role/statement-note-9-taxes-recoverable-and-payable-schedule-of-taxes-recoverable-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995498 - Disclosure - Note 9 - Taxes Recoverable and Payable - Schedule of Taxes Recoverable (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-10-convertible-and-nonconvertible-promissory-notes-details-textual" roleURI="http://www.alternusce.com/20260630/role/statement-note-10-convertible-and-nonconvertible-promissory-notes-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995499 - Disclosure - Note 10 - Convertible and Non-convertible Promissory Notes (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-10-convertible-and-nonconvertible-promissory-notes-convertible-notes-details" roleURI="http://www.alternusce.com/20260630/role/statement-note-10-convertible-and-nonconvertible-promissory-notes-convertible-notes-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995500 - Disclosure - Note 10 - Convertible and Non-convertible Promissory Notes - Convertible Notes (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-10-convertible-and-nonconvertible-promissory-notes-schedule-of-debt-details" roleURI="http://www.alternusce.com/20260630/role/statement-note-10-convertible-and-nonconvertible-promissory-notes-schedule-of-debt-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995501 - Disclosure - Note 10 - Convertible and Non-convertible Promissory Notes - Schedule of Debt (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-10-convertible-and-nonconvertible-promissory-notes-schedule-of-debt-restructuring-details" roleURI="http://www.alternusce.com/20260630/role/statement-note-10-convertible-and-nonconvertible-promissory-notes-schedule-of-debt-restructuring-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995502 - Disclosure - Note 10 - Convertible and Non-convertible Promissory Notes - Schedule of Debt Restructuring (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-11-other-payables-details-textual" roleURI="http://www.alternusce.com/20260630/role/statement-note-11-other-payables-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995503 - Disclosure - Note 11 - Other Payables (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-12-commitments-and-contingencies-details-textual" roleURI="http://www.alternusce.com/20260630/role/statement-note-12-commitments-and-contingencies-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995504 - Disclosure - Note 12 - Commitments and Contingencies (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-13-sale-of-spanish-subsidiaries-details-textual" roleURI="http://www.alternusce.com/20260630/role/statement-note-13-sale-of-spanish-subsidiaries-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995505 - Disclosure - Note 13 - Sale of Spanish Subsidiaries (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-13-sale-of-spanish-subsidiaries-summary-of-assets-and-liabilities-in-sale-of-subsidiary-details" roleURI="http://www.alternusce.com/20260630/role/statement-note-13-sale-of-spanish-subsidiaries-summary-of-assets-and-liabilities-in-sale-of-subsidiary-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995506 - Disclosure - Note 13 - Sale of Spanish Subsidiaries - Summary of Assets and Liabilities in Sale of Subsidiary (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-14-shareholders-equity-details-textual" roleURI="http://www.alternusce.com/20260630/role/statement-note-14-shareholders-equity-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995507 - Disclosure - Note 14 - Shareholders' Equity (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-14-shareholders-equity-summary-of-warrant-activity-details" roleURI="http://www.alternusce.com/20260630/role/statement-note-14-shareholders-equity-summary-of-warrant-activity-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995508 - Disclosure - Note 14 - Shareholders' Equity - Summary of Warrant Activity (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-15-segment-and-geographic-information-details-textual" roleURI="http://www.alternusce.com/20260630/role/statement-note-15-segment-and-geographic-information-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995509 - Disclosure - Note 15 - Segment and Geographic Information (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-15-segment-and-geographic-information-schedule-of-segment-information-details" roleURI="http://www.alternusce.com/20260630/role/statement-note-15-segment-and-geographic-information-schedule-of-segment-information-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995510 - Disclosure - Note 15 - Segment and Geographic Information - Schedule of Segment Information (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-16-income-tax-provision-details-textual" roleURI="http://www.alternusce.com/20260630/role/statement-note-16-income-tax-provision-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995511 - Disclosure - Note 16 - Income Tax Provision (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-17-related-party-details-textual" roleURI="http://www.alternusce.com/20260630/role/statement-note-17-related-party-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995512 - Disclosure - Note 17 - Related Party (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-17-related-party-related-party-transactions-details" roleURI="http://www.alternusce.com/20260630/role/statement-note-17-related-party-related-party-transactions-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995513 - Disclosure - Note 17 - Related Party - Related Party Transactions (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-18-subsequent-events-details-textual" roleURI="http://www.alternusce.com/20260630/role/statement-note-18-subsequent-events-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">995514 - Disclosure - Note 18 - Subsequent Events (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element abstract="true" id="alce_AccreditedDebtHolderMember" name="AccreditedDebtHolderMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_AccruedAuditFeesCurrent" name="AccruedAuditFeesCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_AccruedConsultingFeesCurrent" name="AccruedConsultingFeesCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_AccruedLegalFees" name="AccruedLegalFees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_AccruedTaxPenaltiesCurrent" name="AccruedTaxPenaltiesCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="alce_AdditionalWarrantsToAnAccreditedInvestorMember" name="AdditionalWarrantsToAnAccreditedInvestorMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_AltAllianceLlcMember" name="AltAllianceLlcMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_AltSpainHoldSharesMember" name="AltSpainHoldSharesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_AltSpainHoldcoMember" name="AltSpainHoldcoMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_AlternusEnergyGroupPlcMember" name="AlternusEnergyGroupPlcMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ApproximateMember" name="ApproximateMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_April2025WarrantsMember" name="April2025WarrantsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_AprilAndOctoberConvertibleNotesMember" name="AprilAndOctoberConvertibleNotesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_BeneficialOwnershipMaximum" name="BeneficialOwnershipMaximum" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_CapitalizedDevelopmentAndOtherLongtermAssetsTextBlock" name="CapitalizedDevelopmentAndOtherLongtermAssetsTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_CfgiLpMember" name="CfgiLpMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ChiefLearningOfficerMember" name="ChiefLearningOfficerMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ClassOfWarrantOrRightExercisable" name="ClassOfWarrantOrRightExercisable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ClassOfWarrantOrRightExercisableWeightedAverageExercisePrice" name="ClassOfWarrantOrRightExercisableWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_ClassOfWarrantOrRightExercisableWeightedAverageRemainingContractualTerm" name="ClassOfWarrantOrRightExercisableWeightedAverageRemainingContractualTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ClassOfWarrantOrRightExpiredDuringPeriod" name="ClassOfWarrantOrRightExpiredDuringPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ClassOfWarrantOrRightExpiredDuringPeriodWeightedAverageExercisePrice" name="ClassOfWarrantOrRightExpiredDuringPeriodWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ClassOfWarrantOrRightIssued" name="ClassOfWarrantOrRightIssued" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_ClassOfWarrantOrRightIssuedDuringPeriod" name="ClassOfWarrantOrRightIssuedDuringPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ClassOfWarrantOrRightIssuedDuringPeriodWeightedAverageExercisePrice" name="ClassOfWarrantOrRightIssuedDuringPeriodWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ClassOfWarrantOrRightIssuedDuringPeriodWeightedAverageRemainingContractualTerm" name="ClassOfWarrantOrRightIssuedDuringPeriodWeightedAverageRemainingContractualTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ClassOfWarrantOrRightOutstandingWeightedAverageExercisePrice" name="ClassOfWarrantOrRightOutstandingWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_ClassOfWarrantOrRightOutstandingWeightedAverageRemainingContractualTerm" name="ClassOfWarrantOrRightOutstandingWeightedAverageRemainingContractualTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ConsultingAgreementInitialTerm" name="ConsultingAgreementInitialTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ConsultingAgreementMember" name="ConsultingAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ConsultingMonthlyFee" name="ConsultingMonthlyFee" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_ContractualObligationMonthlyPayment" name="ContractualObligationMonthlyPayment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="alce_ConversionOfDebtIntoSeriesDConvertiblePreferredStockMember" name="ConversionOfDebtIntoSeriesDConvertiblePreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ConversionOfDebtIntoSeriesEConvertiblePreferredStockMember" name="ConversionOfDebtIntoSeriesEConvertiblePreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ConversionOfNoteIntoCommonStockMember" name="ConversionOfNoteIntoCommonStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ConversionOfNotesIntoSeriesCConvertiblePreferredStockMember" name="ConversionOfNotesIntoSeriesCConvertiblePreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ConvertibleAndNonconvertibleNotesMember" name="ConvertibleAndNonconvertibleNotesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ConvertibleAndNonconvertiblePromissoryNotesMember" name="ConvertibleAndNonconvertiblePromissoryNotesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ConvertibleDebtFairValueAdjustment" name="ConvertibleDebtFairValueAdjustment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ConvertibleNoteWarrantsMember" name="ConvertibleNoteWarrantsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_DebtInstrumentAccruedInterest" name="DebtInstrumentAccruedInterest" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DebtInstrumentCovenantCapitalRaise" name="DebtInstrumentCovenantCapitalRaise" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DebtInstrumentCovenantPercentageOfMembershipInterestPledged" name="DebtInstrumentCovenantPercentageOfMembershipInterestPledged" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_DebtInstrumentOriginalIssueDiscount" name="DebtInstrumentOriginalIssueDiscount" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_DebtInstrumentOriginalIssueDiscountPercentageIncrease" name="DebtInstrumentOriginalIssueDiscountPercentageIncrease" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_DebtRestructuringCosts" name="DebtRestructuringCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_DerivativeIssuanceCosts" name="DerivativeIssuanceCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_DirectorsRemunerationMember" name="DirectorsRemunerationMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationCurrentPortionOfOperatingLeaseLiabilities" name="DisposalGroupIncludingDiscontinuedOperationCurrentPortionOfOperatingLeaseLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationGainLossOnSaleOfNetAssets" name="DisposalGroupIncludingDiscontinuedOperationGainLossOnSaleOfNetAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationNonCurrentPortionOfOperatingLeaseLiabilities" name="DisposalGroupIncludingDiscontinuedOperationNonCurrentPortionOfOperatingLeaseLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationShortSecuredDebt" name="DisposalGroupIncludingDiscontinuedOperationShortSecuredDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupNotDiscontinuedOperationCostsAssociatedWithSale" name="DisposalGroupNotDiscontinuedOperationCostsAssociatedWithSale" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_DisposalGroupNotIncludingDiscontinuedOperationAssetsAndLiabilitiesOfSubsidiarySoldTableTextBlock" name="DisposalGroupNotIncludingDiscontinuedOperationAssetsAndLiabilitiesOfSubsidiarySoldTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_DocumentAndEntityInformation" name="DocumentAndEntityInformation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_EarningsBeforeInterestTaxesDepreciationAndAmortization" name="EarningsBeforeInterestTaxesDepreciationAndAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_EquityOfferingMaximumAmount" name="EquityOfferingMaximumAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="alce_EuropeSegmentMember" name="EuropeSegmentMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_EveronEnergyLlcMember" name="EveronEnergyLlcMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_FairValueAdjustmentsNewNotesIssued" name="FairValueAdjustmentsNewNotesIssued" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityConversion" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityConversion" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityExtinguishments" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityExtinguishments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_FavorableContractsMember" name="FavorableContractsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ForeignCurrencyTranslationReserveMember" name="ForeignCurrencyTranslationReserveMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_FormerDirectorMember" name="FormerDirectorMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_FourAccreditedInvestorsMember" name="FourAccreditedInvestorsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_FourCurrentIndependentDirectorsMember" name="FourCurrentIndependentDirectorsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_GainLossOnDebtSettlements" name="GainLossOnDebtSettlements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_GainOnSettlement" name="GainOnSettlement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_HooverMember" name="HooverMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_HoverMember" name="HoverMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_IncreaseDecreaseInDueToFromRelatedPartiesCurrent" name="IncreaseDecreaseInDueToFromRelatedPartiesCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_IncreaseInProfessionalFeesPerMonth" name="IncreaseInProfessionalFeesPerMonth" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_IssuanceCostsForPutOptionLiability" name="IssuanceCostsForPutOptionLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_LossOnSettlement" name="LossOnSettlement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_March2026RestructuringMember" name="March2026RestructuringMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_MeasurementInputAlceClosingPriceMember" name="MeasurementInputAlceClosingPriceMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_MeasurementInputDolmMember" name="MeasurementInputDolmMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_MeasurementInputFaceValueOfPreferredSharesMember" name="MeasurementInputFaceValueOfPreferredSharesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_MeasurementInputHoldingPeriodMember" name="MeasurementInputHoldingPeriodMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_MeasurementInputProbabilityOfLiquidationMember" name="MeasurementInputProbabilityOfLiquidationMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_MeasurementInputProbabilityOfQualifyingForPipeMember" name="MeasurementInputProbabilityOfQualifyingForPipeMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_Mh02NoteMember" name="Mh02NoteMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ModifiedTermLoansCarryingAmount" name="ModifiedTermLoansCarryingAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_MorganFranklinConsultingLlcMember" name="MorganFranklinConsultingLlcMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_NicholasParkerMember" name="NicholasParkerMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_NonCashInvestingAndFinancingActivitiesSharesIssuedForStockCompensationToThirdParties" name="NonCashInvestingAndFinancingActivitiesSharesIssuedForStockCompensationToThirdParties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_NoncashInvestingAndFinancingActivitiesSharesIssuedForIssuanceCosts" name="NoncashInvestingAndFinancingActivitiesSharesIssuedForIssuanceCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_NoncashInvestingAndFinancingActivitiesSharesIssuedInSettlementOfDebtAndOtherLiabilities" name="NoncashInvestingAndFinancingActivitiesSharesIssuedInSettlementOfDebtAndOtherLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_NoteToFinancialStatementDetailsTextual" name="NoteToFinancialStatementDetailsTextual" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_NotesToFinancialStatements" name="NotesToFinancialStatements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_NotesToFinancialStatementsAbstract" name="NotesToFinancialStatementsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_OIDNotesMember" name="OIDNotesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ObligationToPurchaseProjectAtMarketValueMinimumPerMegawatt" name="ObligationToPurchaseProjectAtMarketValueMinimumPerMegawatt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="alce_OneAccreditedInvestorMember" name="OneAccreditedInvestorMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_OrrickMember" name="OrrickMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_OtherNonoperatingIncomeNet" name="OtherNonoperatingIncomeNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_OtherPayablesCurrent" name="OtherPayablesCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_OtherPayablesTextBlock" name="OtherPayablesTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_OwnershipPercentage" name="OwnershipPercentage" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_OwnershipSoldPercentage" name="OwnershipSoldPercentage" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="alce_PolicyTable" name="PolicyTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_PreferredEquityFinancingMember" name="PreferredEquityFinancingMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_PreferredStockSharesDesignated" name="PreferredStockSharesDesignated" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_PreferredStockStatedValue" name="PreferredStockStatedValue" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_PreferredStockVotesPerShare" name="PreferredStockVotesPerShare" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="alce_PrivatePlacementWarrantsMember" name="PrivatePlacementWarrantsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ProceedsFromIssuanceOfDebtExpected" name="ProceedsFromIssuanceOfDebtExpected" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_ProceedsFromIssuanceOfPreferredStockAndPreferenceStockNet" name="ProceedsFromIssuanceOfPreferredStockAndPreferenceStockNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ProfessionalConsultingAgreementMember" name="ProfessionalConsultingAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_PutOptionAgreementCovenantEquityRaise" name="PutOptionAgreementCovenantEquityRaise" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_PutOptionAgreementCovenantMaximumPurchasePrice" name="PutOptionAgreementCovenantMaximumPurchasePrice" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_PutOptionAgreementCovenantPriceOfRepurchasedShares" name="PutOptionAgreementCovenantPriceOfRepurchasedShares" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_PutOptionAgreementCovenantSharesRepurchased" name="PutOptionAgreementCovenantSharesRepurchased" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_PutOptionAgreementExpirationDate" name="PutOptionAgreementExpirationDate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:dateItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_PutOptionFairValue" name="PutOptionFairValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_PutOptionLiability" name="PutOptionLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_PutOptionLiabilityFairValue" name="PutOptionLiabilityFairValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="alce_RemunerationInRespectOfServicesOfDirectorsMember" name="RemunerationInRespectOfServicesOfDirectorsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_RepresentsRemunerationInRespectToLongtermIncentiveSchemesWithRestrictedSharesMember" name="RepresentsRemunerationInRespectToLongtermIncentiveSchemesWithRestrictedSharesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ReverseStockSplitMember" name="ReverseStockSplitMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_SaleOfSubsidiariesTextBlock" name="SaleOfSubsidiariesTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ScheduleOfTaxesRecoverableAndPayableTableTextBlock" name="ScheduleOfTaxesRecoverableAndPayableTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SecuredPromissoryNotesSoldInSubscriptionAgreementsMember" name="SecuredPromissoryNotesSoldInSubscriptionAgreementsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SeniorConvertibleNoteMember" name="SeniorConvertibleNoteMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SeniorConvertibleNotesConvertedIntoPreferredStockMember" name="SeniorConvertibleNotesConvertedIntoPreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SeriesCConvertiblePreferredStockMember" name="SeriesCConvertiblePreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SeriesDConvertiblePreferredStockMember" name="SeriesDConvertiblePreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SeriesEConvertiblePreferredStockMember" name="SeriesEConvertiblePreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_SettlementAgreementBeneficialOwnershipPercentageOfCommonStock" name="SettlementAgreementBeneficialOwnershipPercentageOfCommonStock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SettlementOfPayablesForSharesMember" name="SettlementOfPayablesForSharesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrantPercentageOfSharesOutstanding" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrantPercentageOfSharesOutstanding" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_SharebasedCompensationArrangementBySharebasedPaymentAwardVotingRightsPercentage" name="SharebasedCompensationArrangementBySharebasedPaymentAwardVotingRightsPercentage" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ShareholderOwnershipPercentage" name="ShareholderOwnershipPercentage" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_SharesReturnedOnRescissionOfBusinessAcquisitionShares" name="SharesReturnedOnRescissionOfBusinessAcquisitionShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_SharesReturnedOnRescissionOfBusinessAcquisitionValue" name="SharesReturnedOnRescissionOfBusinessAcquisitionValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SouthernPointCapitalCorporationMember" name="SouthernPointCapitalCorporationMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SpacSponsorCapitalAccessMember" name="SpacSponsorCapitalAccessMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_StockIssuedDuringPeriodSharesCash" name="StockIssuedDuringPeriodSharesCash" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_StockIssuedDuringPeriodSharesDebtRestructuring" name="StockIssuedDuringPeriodSharesDebtRestructuring" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_StockIssuedDuringPeriodSharesIssuedForSettlementOfPayables" name="StockIssuedDuringPeriodSharesIssuedForSettlementOfPayables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_StockIssuedDuringPeriodSharesLitigationSettlement" name="StockIssuedDuringPeriodSharesLitigationSettlement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_StockIssuedDuringPeriodSharesSharesIssuedForDebtIssuanceCosts" name="StockIssuedDuringPeriodSharesSharesIssuedForDebtIssuanceCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_StockIssuedDuringPeriodValueCash" name="StockIssuedDuringPeriodValueCash" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_StockIssuedDuringPeriodValueDebtRestructuring" name="StockIssuedDuringPeriodValueDebtRestructuring" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_StockIssuedDuringPeriodValueLitigationSettlement" name="StockIssuedDuringPeriodValueLitigationSettlement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_StockIssuedDuringPeriodValueSettlementOfPayables" name="StockIssuedDuringPeriodValueSettlementOfPayables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_StockIssuedDuringPeriodValueSharesIssuedForDebtIssuanceCosts" name="StockIssuedDuringPeriodValueSharesIssuedForDebtIssuanceCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SubscriptionAgreementsMember" name="SubscriptionAgreementsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SunriseDevelopmentLlcMember" name="SunriseDevelopmentLlcMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_TaxesRecoverable" name="TaxesRecoverable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_TaxesRecoverableAndPayable" name="TaxesRecoverableAndPayable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_TaxesRecoverableAndPayableTextBlock" name="TaxesRecoverableAndPayableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_TermLoansMember" name="TermLoansMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_The2024ConvertibleNotesMember" name="The2024ConvertibleNotesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ThreeAccreditedInvestorsMember" name="ThreeAccreditedInvestorsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_TotalNotesMember" name="TotalNotesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_TotalRevenueIncludingDiscontinuedOperations" name="TotalRevenueIncludingDiscontinuedOperations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_TwentyTwentyThreeEquityIncentivePlanMember" name="TwentyTwentyThreeEquityIncentivePlanMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_TwoAccreditedInvestorsMember" name="TwoAccreditedInvestorsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_UnitedStatesSegmentMember" name="UnitedStatesSegmentMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ValueOfRestitution" name="ValueOfRestitution" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_WarrantIssuanceCosts" name="WarrantIssuanceCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_WarrantLiabilitiesFairValue" name="WarrantLiabilitiesFairValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="alce_WarrantLiabilityMember" name="WarrantLiabilityMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-10-convertible-and-nonconvertible-promissory-notes-convertible-notes-details" name="statement-statement-note-10-convertible-and-nonconvertible-promissory-notes-convertible-notes-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-10-convertible-and-nonconvertible-promissory-notes-schedule-of-debt-details" name="statement-statement-note-10-convertible-and-nonconvertible-promissory-notes-schedule-of-debt-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-10-convertible-and-nonconvertible-promissory-notes-schedule-of-debt-restructuring-details" name="statement-statement-note-10-convertible-and-nonconvertible-promissory-notes-schedule-of-debt-restructuring-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-10-convertible-and-nonconvertible-promissory-notes-tables" name="statement-statement-note-10-convertible-and-nonconvertible-promissory-notes-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-13-sale-of-spanish-subsidiaries-summary-of-assets-and-liabilities-in-sale-of-subsidiary-details" name="statement-statement-note-13-sale-of-spanish-subsidiaries-summary-of-assets-and-liabilities-in-sale-of-subsidiary-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-13-sale-of-spanish-subsidiaries-tables" name="statement-statement-note-13-sale-of-spanish-subsidiaries-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-14-shareholders-equity-summary-of-warrant-activity-details" name="statement-statement-note-14-shareholders-equity-summary-of-warrant-activity-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-14-shareholders-equity-tables" name="statement-statement-note-14-shareholders-equity-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-15-segment-and-geographic-information-schedule-of-segment-information-details" name="statement-statement-note-15-segment-and-geographic-information-schedule-of-segment-information-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-15-segment-and-geographic-information-tables" name="statement-statement-note-15-segment-and-geographic-information-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-17-related-party-related-party-transactions-details" name="statement-statement-note-17-related-party-related-party-transactions-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-17-related-party-tables" name="statement-statement-note-17-related-party-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-3-summary-of-significant-accounting-policies-summary-of-antidilutive-securities-details" name="statement-statement-note-3-summary-of-significant-accounting-policies-summary-of-antidilutive-securities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-3-summary-of-significant-accounting-policies-tables" name="statement-statement-note-3-summary-of-significant-accounting-policies-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-4-fair-value-measurements-schedule-of-fair-value-liabilities-with-unobservable-inputs-details" name="statement-statement-note-4-fair-value-measurements-schedule-of-fair-value-liabilities-with-unobservable-inputs-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-4-fair-value-measurements-schedule-of-fair-value-liabilities-with-unobservable-inputs-details-parentheticals" name="statement-statement-note-4-fair-value-measurements-schedule-of-fair-value-liabilities-with-unobservable-inputs-details-parentheticals" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-4-fair-value-measurements-summary-of-assets-and-liabilities-measured-at-fair-value-on-a-recurring-basis-details" name="statement-statement-note-4-fair-value-measurements-summary-of-assets-and-liabilities-measured-at-fair-value-on-a-recurring-basis-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-4-fair-value-measurements-summary-of-fair-value-assumptions-details" name="statement-statement-note-4-fair-value-measurements-summary-of-fair-value-assumptions-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-4-fair-value-measurements-tables" name="statement-statement-note-4-fair-value-measurements-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-5-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-assets-acquired-details" name="statement-statement-note-5-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-assets-acquired-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-5-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-pro-forma-information-details" name="statement-statement-note-5-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-pro-forma-information-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-5-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-tables" name="statement-statement-note-5-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-6-other-longterm-assets-schedule-of-capitalized-development-costs-and-other-longterm-assets-details" name="statement-statement-note-6-other-longterm-assets-schedule-of-capitalized-development-costs-and-other-longterm-assets-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-6-other-longterm-assets-tables" name="statement-statement-note-6-other-longterm-assets-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-7-accounts-payable-schedule-of-accounts-payable-details" name="statement-statement-note-7-accounts-payable-schedule-of-accounts-payable-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-7-accounts-payable-tables" name="statement-statement-note-7-accounts-payable-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-8-accrued-liabilities-schedule-of-accrued-liabilities-details" name="statement-statement-note-8-accrued-liabilities-schedule-of-accrued-liabilities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-8-accrued-liabilities-tables" name="statement-statement-note-8-accrued-liabilities-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-9-taxes-recoverable-and-payable-schedule-of-taxes-recoverable-details" name="statement-statement-note-9-taxes-recoverable-and-payable-schedule-of-taxes-recoverable-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-9-taxes-recoverable-and-payable-tables" name="statement-statement-note-9-taxes-recoverable-and-payable-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-significant-accounting-policies-policies" name="statement-statement-significant-accounting-policies-policies" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
</xsd:schema>
