Nature of Business	6 Months Ended
Jun. 30, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Business	Nature of Business Organization NuScale Power Corporation (“NuScale Corp”) is incorporated under the laws of Delaware. The Company is the primary beneficiary of NuScale LLC, a variable interest entity (“VIE”), and all activities of NuScale LLC and the Company are consolidated herein. NuScale LLC is a limited liability company organized in Oregon in 2011. “NuScale”, the “Company”, “us”, “we” and “our” refer to NuScale Corp and its consolidated subsidiaries. Operations NuScale is commercializing a modular, scalable electric Light Water Reactor nuclear power plant with 77 MWe (gross) NPMs, using exclusive rights to a nuclear power plant design obtained from Oregon State University. In the future the Company also plans to generate revenue by providing critical pre- and post-commercial operation date services, such as start-up and testing and nuclear fuel and refueling services, over the life cycle of each power plant. However, at the Company’s current stage, all significant revenue generated to date arises from engineering and licensing fees and services provided to potential customers, with the end goal of selling NPMs. The following dates represent key milestones in the development of this technology: •December 2016: DCA completed for 50 MWe design; •March 2017: DCA for 50 MWe design accepted for review by the NRC; •August 2020: NRC issued the FSER and SDA for 50 MWe design; •July 2023: SDA Application and associated licensing topical reports for 77 MWe design accepted for formal review by the NRC; and •May 2025: NRC finalized their review and approved the SDA for 77 MWe design. The FSER represented the NRC’s completion of its technical review and approval of the NuScale SMR design. Now that the NRC has also approved the SDA, customers are able to proceed with plans to develop NuScale power plants and file applications seeking permission to build and operate an SMR in the United States that utilizes the 77 MWe-per-module NPM design. The Company has entered into a series of agreements, whereby ENTRA1 is NuScale’s exclusive global strategic partner for the commercialization and development of power plants utilizing NPMs. ENTRA1 is also considered a prospective customer as the Company is a key supplier for the sale and installation of NPMs on future ENTRA1 energy projects. The Company’s activities are subject to significant risks and uncertainties, including our ability to enter into binding contracts with customers to deliver NPMs and our need to continue to secure funding to sustain operations until we reach commercialization and obtain customers. The majority of the Company’s operations and long-lived assets were attributable to operations in the United States other than the long-lead material work in process being manufactured in South Korea during the 2026 and 2025 fiscal years.

Nature of Business

6 Months Ended

Jun. 30, 2026

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization

NuScale Power Corporation (“NuScale Corp”) is incorporated under the laws of Delaware. The Company is the primary beneficiary of NuScale LLC, a variable interest entity (“VIE”), and all activities of NuScale LLC and the Company are consolidated herein. NuScale LLC is a limited liability company organized in Oregon in 2011. “NuScale”, the “Company”, “us”, “we” and “our” refer to NuScale Corp and its consolidated subsidiaries.

Operations

NuScale is commercializing a modular, scalable electric Light Water Reactor nuclear power plant with 77 MWe (gross) NPMs, using exclusive rights to a nuclear power plant design obtained from Oregon State University. In the future the Company also plans to generate revenue by providing critical pre- and post-commercial operation date services, such as start-up and testing and nuclear fuel and refueling services, over the life cycle of each power plant. However, at the Company’s current stage, all significant revenue generated to date arises from engineering and licensing fees and services provided to potential customers, with the end goal of selling NPMs. The following dates represent key milestones in the development of this technology:

•December 2016: DCA completed for 50 MWe design;

•March 2017: DCA for 50 MWe design accepted for review by the NRC;

•August 2020: NRC issued the FSER and SDA for 50 MWe design;

•July 2023: SDA Application and associated licensing topical reports for 77 MWe design accepted for formal review by the NRC; and

•May 2025: NRC finalized their review and approved the SDA for 77 MWe design.

The FSER represented the NRC’s completion of its technical review and approval of the NuScale SMR design. Now that the NRC has also approved the SDA, customers are able to proceed with plans to develop NuScale power plants and file applications seeking permission to build and operate an SMR in the United States that utilizes the 77 MWe-per-module NPM design.

The Company has entered into a series of agreements, whereby ENTRA1 is NuScale’s exclusive global strategic partner for the commercialization and development of power plants utilizing NPMs. ENTRA1 is also considered a prospective customer as the Company is a key supplier for the sale and installation of NPMs on future ENTRA1 energy projects.

The Company’s activities are subject to significant risks and uncertainties, including our ability to enter into binding contracts with customers to deliver NPMs and our need to continue to secure funding to sustain operations until we reach commercialization and obtain customers.

The majority of the Company’s operations and long-lived assets were attributable to operations in the United States other than the long-lead material work in process being manufactured in South Korea during the 2026 and 2025 fiscal years.