Organization and Description of Business	3 Months Ended
Mar. 31, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Description of Business	1. Organization and Description of Business Organization Fermi Inc. was originally formed as Fermi LLC, a Texas limited liability company, on January 10, 2025 (“Inception”). On September 30, 2025, immediately following the effectiveness of our registration statement on Form S-11 in connection with our IPO, the Company effected a statutory conversion from a Texas limited liability company to a Texas corporation pursuant to and in accordance with a plan of conversion (the “Corporate Conversion”). References in this Quarterly Report on Form 10-Q to “Fermi”, “we”, “us”, “our” and “the Company” (i) for periods prior to the Corporate Conversion, refer to Fermi LLC, and, where appropriate, its consolidated subsidiaries and (ii) for periods after the Corporate Conversion, refer to Fermi Inc., and, where appropriate, its consolidated subsidiaries. As a result of the Corporate Conversion, Fermi Inc. succeeded to all of the property, assets, debts, and obligations of Fermi LLC. Fermi Inc. is governed by a certificate of formation filed with the Texas Secretary of State and bylaws adopted by its board of directors (the “Bylaws”). The Company’s mission is to power the intelligence of tomorrow. The Company is in the process of developing its first campus, Project Matador, as an approximately 11-gigawatt on-demand energy generation and powered shell AI infrastructure campus located in Carson County, Texas. With additional acreage acquired or under contract, Project Matador is expandable up to approximately 17 gigawatts of total generation capacity, subject to the closing of additional land acquisitions and receipt of incremental permits. Project Matador is planned to provide hyperscale customers with approximately 15 million square feet of AI infrastructure space powered by a combination of on-site solar, gas, and nuclear power infrastructure. Preliminary site development commenced in 2025, and vertical construction is expected to commence upon execution of a definitive lease agreement with a prospective tenant. Commercial operations for the first powered shell campus are targeted to commence in 2027. Disclosures of the energy generation and square footage of facilities are unaudited and outside the scope of our independent registered public accounting firm’s review of our financial statements in accordance with the standards of the Public Company Accounting Oversight Board (U.S.). We anticipate generating substantially all of our revenue from lease rental income from hyperscaler tenants. As of March 31, 2026, we have not yet commenced revenue generating activities. All activity through March 31, 2026, is related to our formation and initial engagement with various commercial parties to facilitate infrastructure procurement, leasing, preliminary site development, and marketing activities for Project Matador. We do not expect to generate operating revenues until powered shell facilities are delivered to tenants. We generate non-operating income in the form of interest income on cash. Our fiscal year ends on December 31.

Fermi Inc. was originally formed as Fermi LLC, a Texas limited liability company, on January 10, 2025 (“Inception”). On September 30, 2025, immediately following the effectiveness of our registration statement on Form S-11 in connection with our IPO, the Company effected a statutory conversion from a Texas limited liability company to a Texas corporation pursuant to and in accordance with a plan of conversion (the “Corporate Conversion”). References in this Quarterly Report on Form 10-Q to “Fermi”, “we”, “us”, “our” and “the Company” (i) for periods prior to the Corporate Conversion, refer to Fermi LLC, and, where appropriate, its consolidated subsidiaries and (ii) for periods after the Corporate Conversion, refer to Fermi Inc., and, where appropriate, its consolidated subsidiaries.

As a result of the Corporate Conversion, Fermi Inc. succeeded to all of the property, assets, debts, and obligations of Fermi LLC. Fermi Inc. is governed by a certificate of formation filed with the Texas Secretary of State and bylaws adopted by its board of directors (the “Bylaws”).

The Company’s mission is to power the intelligence of tomorrow. The Company is in the process of developing its first campus, Project Matador, as an approximately 11-gigawatt on-demand energy generation and powered shell AI infrastructure campus located in Carson County, Texas. With additional acreage acquired or under contract, Project Matador is expandable up to approximately 17 gigawatts of total generation capacity, subject to the closing of additional land acquisitions and receipt of incremental permits. Project Matador is planned to provide hyperscale customers with approximately 15 million square feet of AI infrastructure space powered by a combination of on-site solar, gas, and nuclear power infrastructure. Preliminary site development commenced in 2025, and vertical construction is expected to commence upon execution of a definitive lease agreement with a prospective tenant. Commercial operations for the first powered shell campus are targeted to commence in 2027. Disclosures of the energy generation and square footage of facilities are unaudited and outside the scope of our independent registered public accounting firm’s review of our financial statements in accordance with the standards of the Public Company Accounting Oversight Board (U.S.).

We anticipate generating substantially all of our revenue from lease rental income from hyperscaler tenants. As of March 31, 2026, we have not yet commenced revenue generating activities. All activity through March 31, 2026, is related to our formation and initial engagement with various commercial parties to facilitate infrastructure procurement, leasing, preliminary site development, and marketing activities for Project Matador. We do not expect to generate operating revenues until powered shell facilities are delivered to tenants. We generate non-operating income in the form of interest income on cash. Our fiscal year ends on December 31.