In Development
AP300 SMR
330 MWe (990 MWt) single-loop small modular reactor derived directly from the licensed AP1000, reusing its passive safety architecture and supply chain to shorten the path through licensing and construction.
Westinghouse Electric CompanyAP1000
Active
Generation III+ pressurized water reactor with fully passive safety systems and modular construction - the only fully designed and licensed advanced large reactor operating in the United States, and the reference design for the US nuclear buildout and for new plants in Poland, Bulgaria, and Ukraine.
Latest update Aug 3, 2026
01
Current status
Operating at Vogtle Units 3 & 4 in Georgia (commercial operation 2023 and 2024) and at four units in China (Sanmen 1 & 2, Haiyang 1 & 2) - six AP1000 units in operation worldwide, with 14 more under construction in China (CAP1000 derivatives, none yet online) and 5 more under contract in Poland and Bulgaria. Also in advanced development for Ukraine (9 units planned starting at Khmelnytskyi); in the US, four units at Project Matador in Texas entered NRC environmental scoping in March 2026, and the VC Summer completion effort is advancing toward a final investment decision (targeted by 2028) with resumption aimed at early-mid 2030s commercial operation. In April 2026 Westinghouse designated Vogtle Unit 4 as the standard reference plant for fleet-scale US deployment.
02
Specifications4
03
Upcoming milestones6
Announced next steps from Westinghouse Electric Company that mention AP1000.
2026-2027
Convert the US-Saudi nuclear pact into an AP1000 order
Following the July 23, 2026 US-Saudi peaceful nuclear cooperation agreement, the deal remains in diplomatic limbo: one day after the signing, President Trump conditioned approval on Saudi Arabia joining the Abraham Accords to normalize relations with Israel, and Saudi Arabia has so far resisted signing, insisting on progress toward Palestinian statehood first. Congressional review was still pending as of late August 2026. A potential multi-decade, multi-billion-dollar Saudi AP1000 program with Westinghouse as likely builder cannot proceed until these preconditions are resolved. Re-verified September 2026, no change.
H2 2026
Convert DOE $17.5B commitment into firm US AP1000 orders
Finalize loan documentation for the conditional $17.5B DOE long-lead-item commitment and convert letters of intent (signed with seven potential partners) into firm orders with up to five utilities, at two AP1000 reactors per project. As of early September 2026 the five recipient utilities had still not been officially named (re-verified, no change since mid-August); sector analyst Capstone has flagged Dominion Energy, DTE Energy, WEC Energy Group, Public Service Enterprise Group, and Entergy as best-positioned candidates, with formal selections expected in the second half of 2026.
End of 2026
Finish remaining Poland AP1000 EPC terms with PEJ and Bechtel
2027
AP300 NRC design certification
Complete US NRC design certification of the AP300 small modular reactor, anticipated by 2027, opening the door to site-specific licensing and construction of the first unit toward the end of the decade. As of early September 2026 the AP300 remains in the NRC's pre-application phase (re-verified, no change since August) - regulatory white papers filed and a periodic regulatory engagement plan update submitted in June 2026, but no design certification application yet lodged. On August 4, 2026 Westinghouse and Amentum signed agreements under the APX platform strategy in which Amentum will support the engineering work needed for the AP300 licensing process, while the companies also work together to expand engineering and execution capacity for fleet-scale AP1000 deployment.
2028
VC Summer AP1000 completion - final investment decision
The Brookfield / The Nuclear Company joint venture (formed May 2026) is running due diligence toward a final investment decision on completing the two abandoned VC Summer AP1000 units in South Carolina, on a staged timeline: Brookfield is due to apply for a federal loan by December 31, 2026, select an operator for the AP1000 units by February 28, 2027, complete its cost and schedule analysis by the end of 2027, and disclose whether it will commit to the roughly $2.7B revival by March 31, 2028. Westinghouse's IPO-related pipeline disclosures (August 2026) list VC Summer's resumption with a target of early-mid 2030s commercial operation.
2028
Poland's first AP1000 - construction licence review and start of construction
PEJ submitted its construction licence application for the three-unit Lubiatowo-Kopalino plant at Choczewo to Poland's National Atomic Energy Agency (PAA) on March 31, 2026, one of the largest licensing filings in Polish history; the PAA has up to 24 months to rule, putting a decision around March 2028. Bechtel formally took over site management from PEJ on August 3, 2026, with Budimex selected as main earthworks contractor - grading, drainage upgrades, and about 16 km of temporary access roads - moving the project from planning into large-scale site preparation while the licence review runs in parallel. Westinghouse and Bechtel continue engineering and equipment procurement (including the selection of Arabelle Solutions to supply steam turbine-generators) ahead of a targeted Q4 2028 start of construction on the first unit, with commercial operation of Unit 1 targeted for 2036. Re-verified September 2026, no change to the timeline.
04
In the news5
NRC renews the AP1000 design certification
On Oct. 14, 2026 the NRC published a direct final rule renewing the AP1000 design certification and incorporating Design Control Document Revision 20, so the certified design matches changes made while licensing, building and operating Vogtle Units 3 and 4. The rule takes effect on Dec. 28, 2026 unless significant adverse comments arrive by Nov. 13, 2026. If it takes effect, the certification would run 40 years from that date.
US-Korea $120B nuclear framework names six Westinghouse AP1000s
Brookfield and Cameco said Washington and Seoul announced a non-binding framework for up to $120 billion of Korean investment to help finance eight large US reactors: six Westinghouse AP1000 units and two Korean APR1400 units that use Westinghouse technology, to be placed on still-unnamed federal sites. Cameco said a one-time waiver of Westinghouse's 2025 IP settlement with KEPCO and KHNP would allow the APR1400 pair, with about $2 billion of Westinghouse value per unit from licensing, services and fuel fabrication, plus a possible Korean equity stake that Cameco does not expect to change its own holding. Korea Herald, citing Seoul's industry ministry, said the framework does not authorize construction, that sites and schedules remain unset, and that each plant still needs a separate commercial and domestic approval.
Westinghouse and PEJ agree main terms for Poland AP1000 plant
The Westinghouse-Bechtel consortium and Polskie Elektrownie Jadrowe agreed on 23 September 2026 on the main commercial terms of the engineering, procurement and construction contract for Poland's first nuclear power plant. The project is a three-unit AP1000 plant totaling 3,750 MWe at Lubiatowo-Kopalino in Pomerania; the parties said remaining EPC terms should be finished by year-end and PEJ said first electricity is expected in 2036. The agreement is not a signed construction contract: PEJ said it covers key commercial and legal issues and paves the way for further negotiation of exhibits, while site preparatory work continues after Bechtel took over the site in August.
info.westinghousenuclear.com www.bechtel.com pej.pl www.world-nuclear-news.org
Westinghouse and Amentum sign AP1000 and AP300 agreements
Westinghouse and Amentum entered a series of agreements on August 4, 2026 supporting Westinghouse's APX technology platform, expanding delivery capacity for fleet-scale AP1000 reactor deployment and advancing development of the AP300 small modular reactor. Amentum will support the engineering work needed for AP300 to obtain US Nuclear Regulatory Commission design certification, while the companies also work to strengthen AP1000 engineering and execution capacity for building 1-gigawatt reactors at scale.
US-Saudi nuclear pact names Westinghouse likely AP1000 builder
The United States and Saudi Arabia signed a peaceful nuclear cooperation and safeguards agreement on July 23, opening the door to a Saudi civilian nuclear program that could see Westinghouse build AP1000 reactors under a multi-decade, multi-billion-dollar deal. The agreement is contingent on Saudi Arabia joining the Abraham Accords and still requires congressional review before any reactor contracts can be finalized.
05
More from Westinghouse Electric Company2
06
More in Nuclear Fission
In DevelopmentVOYGR-12
NuScale Power
Full-scale SMR power plant with 12 modules generating up to 924 MWe of carbon-free electricity.
In DevelopmentNuScale Power Module
NuScale Power
Self-contained 77 MWe pressurized water reactor module with integrated steam generators.
In DevelopmentVOYGR-6
NuScale Power
Mid-size SMR plant configuration with 6 modules producing up to 462 MWe.
In DevelopmentAurora Powerhouse
Oklo
Oklo's fast-fission powerhouse product line is designed for build-own-operate deployment, targeting customers that want firm clean power in a smaller footprint than traditional large reactors.