Google’s $4.3B Nuclear Uprate Deal with Constellation Targets AI Power Crunch

Key points

• Google and Constellation Energy signed a 20-year power purchase agreement to fund $4.3 billion in nuclear reactor upgrades.
• The deal will add 890 megawatts of new nuclear capacity to the PJM grid, equivalent to one large new reactor or three small modular reactors.
• Upgrades will be performed at 11 reactors across six sites in Illinois, Pennsylvania, and New Jersey, with the first expected by 2028.
• A separate 15-year agreement for 2,700 megawatts guarantees revenue for Constellation’s existing power plants, regardless of fuel type.
• Constellation will adopt Google Cloud and Gemini Enterprise to optimize grid operations, reduce costs, and protect critical infrastructure.
• The deal responds to PJM grid strain from AI data centers, with electricity rates in New Jersey having risen 54% over five years.

Background

This deal follows a similar 20-year nuclear agreement between Amazon and Constellation Energy announced in early October 2026, which aimed to power Amazon’s data centers in the PJM grid. The broader trend reflects a surge in tech companies securing long-term power contracts to meet the energy demands of AI infrastructure, as traditional grid capacity struggles to keep pace with rapid expansion.

How outlets are covering it

The Verge and The New York Times both highlight the financial scale of the deal, emphasizing the $4.3 billion investment and the 890 megawatts of new capacity. The Verge notes the broader context of PJM grid strain and rising electricity rates, while The New York Times frames the deal as part of a wider industry trend of 'power uprates' to avoid the long timelines of building new reactors. Constellation Energy’s official statement emphasizes the environmental and economic benefits, including job creation and the use of AI for grid optimization, whereas The Verge points out that Google’s carbon emissions rose 18% last year, raising questions about the sustainability of its energy strategy. Yahoo Finance, while not providing detailed analysis, confirms the market reaction, with Constellation’s stock surging 12% following the announcement.

Why it matters

This deal represents a significant shift in how tech companies secure power for AI data centers, moving from traditional grid reliance to direct investment in nuclear infrastructure. It addresses the immediate power crunch in the PJM grid, which serves 67 million people, and sets a precedent for public-private partnerships in energy. The integration of AI into grid operations could improve efficiency and resilience, but it also raises questions about the long-term sustainability and environmental impact of such rapid energy expansion.

What to watch

The first nuclear uprate is expected to be delivered by 2028, with the full 890 megawatts of new capacity coming online over the next five years. Constellation and Google will continue to evaluate opportunities for new clean generation, storage, and demand response across the United States. The market will likely see further stock movements in the utility sector as other tech companies follow suit with similar long-term power agreements.