Constellation-Google Deal Adds 890 Megawatts of Nuclear Power to PJM Grid by 2032
Key Facts
Constellation Energy and Google announced a long-term agreement that will add 890 megawatts of nuclear capacity to the PJM grid, with the first capacity increase expected by 2028 and the full amount available before the end of 2032. Constellation said the agreement requires more than $4.3 billion in new investment from the company, helps preserve about 4,400 existing jobs and supports nearly 7,200 construction jobs during the work. The increase will come from upgrading and improving the efficiency of existing nuclear units, rather than building new plants. The companies said the capacity will be added to the PJM grid to meet demand growth and strengthen supply reliability. The announcement does not say that all of the capacity will be dedicated exclusively to Google's data centers.
The announcement combines the new capacity agreement with a separate deal to supply power from Constellation's PJM fleet. The separate supply agreement runs for 15 years and covers 2,700 megawatts of existing assets. The arrangements are intended to keep those assets in the market to provide energy and capacity, alongside the increase from the nuclear upgrades. The agreement therefore has two distinct components: adding new capacity by improving unit efficiency and continuing to supply the market from the existing plant fleet. The structure highlights the distinction between the new nuclear capacity agreement and the separate power supply contract.
The deal reflects mounting pressure on supply and demand in the PJM region. The operator's board said new large loads are projected to increase by about 70 gigawatts by 2038, while 15 gigawatts of generation resources have retired since 2022. The latest capacity auction also showed a shortfall of 6,831 megawatts against the reliability requirement for the 2028/2029 delivery year. These figures put the nuclear capacity addition in the context of the grid's need for generation resources that can support supply. The deal aims to add some capacity in stages, while existing fleet units remain available under the other supply contract.
The agreement comes amid a wave of long-term contracts between technology companies and energy operators, as buyers seek to secure reliable electricity supplies alongside load growth. Constellation previously signed a separate 20-year power purchase agreement with Amazon, including a planned increase of about 190 megawatts at the Calvert Cliffs plant in Maryland. That deal differs from the Google agreement in its counterparty and project, although both include a planned increase in the capacity of an existing nuclear plant. The Amazon agreement highlights upgrades to existing units as one option for expanding nuclear supply. The Google deal combines a capacity addition to the PJM grid with power supply from existing assets.
Alongside the energy arrangements, Constellation selected Google Cloud and Gemini Enterprise as part of an expanded five-year technology alliance. The company said the collaboration will bring agent-based AI workflows into its core operations. Applications include accelerating plant upgrade planning, improving asset operations and protecting infrastructure. According to the company's announcement, this technology effort links the development of generation capacity with the management of the assets that will produce it. The announced nuclear capacity schedule remains phased: the first increase is expected by 2028, followed by the full 890 megawatts before the end of 2032.
In trading on October 23, 2026, Constellation Energy shares closed at $253.45, while Alphabet shares closed at $320.21. The prices provide a post-announcement snapshot, but do not by themselves determine the deal's effect on either stock's performance. Execution depends on the phased unit upgrades, with the first increase expected by 2028. Google's longer-term deadline is to make the full agreed capacity available before the end of 2032. Those dates will be key milestones for tracking progress on additions to the PJM grid.