Partnership Milestones Agreement with ENTRA1	6 Months Ended
Jun. 30, 2026
Commitments and Contingencies Disclosure [Abstract]
Partnership Milestones Agreement with ENTRA1	Partnership Milestones Agreement with ENTRA1 On August 27, 2025, NuScale LLC and ENTRA1 executed the PMA, in furtherance of business development and project development activities supported by ENTRA1. Concurrently, NuScale Corp and ENTRA1 executed a Guaranty Agreement, whereby NuScale Corp agreed to guaranty the obligations of NuScale LLC under the PMA. Under the PMA, NuScale is named the key supplier to future ENTRA1 energy projects with respect to the supply of SMR technology, while ENTRA1 retains sole and full discretion to select, contract with, or purchase from NuScale. Under the PMA, the Company is required to make Milestone Contributions to ENTRA1, or its designated affiliate, for each NPM or other NuScale product which may be nominally rated at 77 MWe or with other specifications to provide energy and/or steam that is anticipated to be placed in a contemplated project or power plant (each, an “Energy Project”). The PMA also includes a negotiated maximum sale price for each NPM to be delivered and installed in an ENTRA1 Energy Project. Each Milestone Contribution is broken down into three tranches as follows: •Milestone Contribution 1 (15% of total Milestone Contribution) - Upon execution by ENTRA1, or its designated affiliate, of a non-binding term sheet, memorandum of understanding, letter of intent or framework agreement with a third party related to the development of an Energy Project with a third party. •Milestone Contribution 2 (35% of total Milestone Contribution) - Upon execution by ENTRA1, or its designated affiliate, of a binding power purchase agreement, energy off-take agreement or document with a third party in connection with the development of an Energy Project with a third party or the deployment of one or more NPMs into a potential Energy Project. •Milestone Contribution 3 (50% of total Milestone Contribution) - Upon execution by ENTRA1, or its designated affiliate, a third party or any other party designated by ENTRA1 as a counterparty of an original equipment manufacturing agreement with NuScale for NPMs, or such other form of binding documentation in connection with the purchase or deployment of NPMs. The initial term of the PMA expires on December 31, 2045. The term of the PMA automatically renews for subsequent twenty-year periods, unless either party gives at least twelve months prior written notice before the end of the then relevant term. The PMA may be terminated by either party upon written notice if the other party: (i) becomes insolvent (as declared by a court of competent jurisdiction in a final non-appealable judgment); (ii) makes an assignment for the benefit of creditors; (iii) admits in writing its inability to pay debts as they mature; or (iv) is the subject of any proceeding filed by such other party under any bankruptcy or insolvency law that is not dismissed within 120 days. In 2025, the criteria for triggering payment of Milestone Contribution 1 was achieved, as ENTRA1 entered into a non-binding agreement relating to 72 NPMs. As such, we incurred an expense of $507,393, with $247,509 being settled in 2025 and $259,884 settled during the six months ended June 30, 2026. While the Company is subject to future payments in relation to Milestone Contribution 2 and Milestone Contribution 3, the criteria to record such liability has not been met yet, and the Company does not have an accrued PMA liability as of June 30, 2026.

On August 27, 2025, NuScale LLC and ENTRA1 executed the PMA, in furtherance of business development and project development activities supported by ENTRA1. Concurrently, NuScale Corp and ENTRA1 executed a Guaranty Agreement, whereby NuScale Corp agreed to guaranty the obligations of NuScale LLC under the PMA.

Under the PMA, NuScale is named the key supplier to future ENTRA1 energy projects with respect to the supply of SMR technology, while ENTRA1 retains sole and full discretion to select, contract with, or purchase from NuScale. Under the PMA, the Company is required to make Milestone Contributions to ENTRA1, or its designated affiliate, for each NPM or other NuScale product which may be nominally rated at 77 MWe or with other specifications to provide energy and/or steam that is anticipated to be placed in a contemplated project or power plant (each, an “Energy Project”). The PMA also includes a negotiated maximum sale price for each NPM to be delivered and installed in an ENTRA1 Energy Project. Each Milestone Contribution is broken down into three tranches as follows:

•Milestone Contribution 1 (15% of total Milestone Contribution) - Upon execution by ENTRA1, or its designated affiliate, of a non-binding term sheet, memorandum of understanding, letter of intent or framework agreement with a third party related to the development of an Energy Project with a third party.

•Milestone Contribution 2 (35% of total Milestone Contribution) - Upon execution by ENTRA1, or its designated affiliate, of a binding power purchase agreement, energy off-take agreement or document with a

third party in connection with the development of an Energy Project with a third party or the deployment of one or more NPMs into a potential Energy Project.

•Milestone Contribution 3 (50% of total Milestone Contribution) - Upon execution by ENTRA1, or its designated affiliate, a third party or any other party designated by ENTRA1 as a counterparty of an original equipment manufacturing agreement with NuScale for NPMs, or such other form of binding documentation in connection with the purchase or deployment of NPMs.

The initial term of the PMA expires on December 31, 2045. The term of the PMA automatically renews for subsequent twenty-year periods, unless either party gives at least twelve months prior written notice before the end of the then relevant term. The PMA may be terminated by either party upon written notice if the other party: (i) becomes insolvent (as declared by a court of competent jurisdiction in a final non-appealable judgment); (ii) makes an assignment for the benefit of creditors; (iii) admits in writing its inability to pay debts as they mature; or (iv) is the subject of any proceeding filed by such other party under any bankruptcy or insolvency law that is not dismissed within 120 days.

In 2025, the criteria for triggering payment of Milestone Contribution 1 was achieved, as ENTRA1 entered into a non-binding agreement relating to 72 NPMs. As such, we incurred an expense of $507,393, with $247,509 being settled in 2025 and $259,884 settled during the six months ended June 30, 2026. While the Company is subject to future payments in relation to Milestone Contribution 2 and Milestone Contribution 3, the criteria to record such liability has not been met yet, and the Company does not have an accrued PMA liability as of June 30, 2026.