# US nuclear energy deals for technology companies > Live situation record from CLSTR: https://clstr.news/situations/us-nuclear-energy-deals-for-technology-companies > Updated: 2026-10-11T13:20:08.000Z. Sources: 34. Developments: 7. Constellation Energy and Vistra are competing for long-term nuclear power contracts to supply major technology companies, such as Microsoft, Meta, and Amazon, who require reliable electricity for data center operations. Constellation Energy has expanded its client base through 20-year agreements with Microsoft and Meta Platforms. Following these developments, Constellation entered into a 20-year power purchase agreement with Amazon for 690 MW of power from the Calvert Cliffs Clean Energy Center in Maryland. This specific deal is expected to facilitate over $3 billion in infrastructure investments and support efforts to relicense the plant for an additional 20 years. While the agreement helps Amazon manage energy costs, the power will flow into the PJM regional grid rather than being diverted exclusively to Amazon facilities. The agreement includes an expected 190 MW capacity increase at the Calvert Cliffs facility, which is slated to come online between 2030 and 2032. Vistra Corp. is reportedly in line for a $4 billion federal loan package from the U.S. government to modernize and expand three nuclear power facilities in Ohio and Pennsylvania. Expanding this trend, Google and its parent company, Alphabet, have finalized a $4.3 billion long-term clean energy collaboration with Constellation Energy. Under a 20-year power purchase agreement, Constellation will invest in upgrades to 11 nuclear reactors across six plants in Illinois, Pennsylvania, and New Jersey. These reactor uprates aim to add 890 MW of new capacity to the PJM Interconnection grid, with full capacity targeted by 2032. Additionally, the companies signed a 15-year agreement for 2,700 MW of power from the PJM grid and a five-year technology alliance to utilize Google Cloud and Gemini Enterprise AI for optimizing power production. Meta Platforms has further expanded its nuclear energy involvement by entering an agreement with Oklo Inc. ## Claims - Google and Constellation Energy announced a 20-year power purchase agreement. (disputed by 9 sources) - The deal will add 890 MW of new capacity to the PJM grid. (corroborated by 9 sources) - Constellation will invest over $4.3 billion to upgrade 11 reactors. (corroborated by 9 sources) - The upgrades will take place at six nuclear plants in Illinois, Pennsylvania, and New Jersey. (corroborated by 8 sources) - Google will integrate Google's Gemini Enterprise into its nuclear plant operations. (corroborated by 5 sources) - The agreement includes a separate 15-year, 2,700 MW energy supply agreement. (corroborated by 5 sources) - Constellation's stock price rose by more than 12% following the announcement. (corroborated by 4 sources) - The deal will support more than $3 billion in Maryland infrastructure investment. (corroborated by 3 sources) - The agreement will add 190 MW of capacity to the Calvert Cliffs nuclear plant in Maryland. (corroborated by 2 sources) - The agreement covers 690 MW of power for Amazon. (corroborated by 2 sources) - The U.S. federal government is reportedly preparing a $4 billion loan package for Vistra Corp. (corroborated by 2 sources) - The Vistra loan is intended to help upgrade three nuclear power facilities in Ohio and Pennsylvania. (corroborated by 2 sources) ## Timeline ### 2026-10-11: Google secures 20-year nuclear energy deal for data centers Google's parent company, Alphabet, signed a 20-year deal with Constellation Energy to add 890 MW of nuclear capacity to the US grid to power its data centers. 2 sources. https://clstr.news/cluster/google-secures-20-year-nuclear-energy-deal-for-data-centers ### 2026-10-10: Nuclear energy stocks face volatility amid AI-driven demand and Meta's Ohio power deal Tech giants like Meta are investing in nuclear energy to power AI infrastructure, including a 1.2-GW project in Ohio, despite recent heavy losses in nuclear energy stocks. 4 sources. https://clstr.news/cluster/nuclear-energy-stocks-face-volatility-amid-ai-driven-demand-and-metas-ohio-power-deal ### 2026-10-09: Amazon and Alphabet secure nuclear power deals with Constellation Energy Tech giants Amazon and Alphabet are securing long-term nuclear energy supplies from Constellation Energy to power their growing US data centers and AI infrastructure. 5 sources. https://clstr.news/cluster/amazon-and-alphabet-secure-nuclear-power-deals-with-constellation-energy ### 2026-10-06: Google and Constellation Energy sign major nuclear power deal for AI Google and Constellation Energy signed a massive deal to boost nuclear capacity by 890 MW via $4.3 billion in upgrades to power AI data centers, alongside a separate 2,700 MW long-term supply agreement. 16 sources. https://clstr.news/cluster/google-and-constellation-energy-sign-20-year-nuclear-power-deal ### 2026-10-03: Amazon and Constellation Energy sign 20-year nuclear power deal Amazon has signed a 20-year nuclear power deal with Constellation Energy to fuel AI infrastructure, while Vistra Corp. reportedly awaits a $4 billion U.S. federal loan for nuclear plant upgrades. 5 sources. https://clstr.news/cluster/amazon-signs-20-year-nuclear-energy-deal-with-constellation-energy ### 2026-09-30: Constellation Energy signs 20-year nuclear power deal with Amazon Constellation Energy signed a 20-year deal with Amazon to purchase 690 MW of power from Maryland’s Calvert Cliffs nuclear plant, supporting $3 billion in facility upgrades and plant relicensing. 6 sources. https://clstr.news/cluster/constellation-energy-signs-20-year-nuclear-power-deal-with-amazon ### 2026-09-07: Constellation Energy and Vistra compete for nuclear power deals Constellation Energy and Vistra are securing long-term nuclear power deals with tech giants like Microsoft, Meta, and Amazon to fuel growing data center energy demands. 2 sources. https://clstr.news/cluster/constellation-energy-and-vistra-compete-for-nuclear-power-deals --- Cite as: US nuclear energy deals for technology companies. CLSTR, https://clstr.news/situations/us-nuclear-energy-deals-for-technology-companies