Constellation Energy and Google confirm a long-term nuclear power agreement worth about $4.3 billion, set to run for 20 years. The deal is tied to adding 890 megawatts (MW) of new capacity to the PJM electricity grid, according to reporting from multiple outlets.

The capacity increase is planned through upgrades at 11 nuclear plants located across three states. Quartz and Utility Dive both describe the arrangement as part of a broader buildout that strengthens nuclear supply into the PJM market, with Utility Dive framing it as nearly 1.1 gigawatts (GW) of nuclear expansion supported by recently announced long-term power purchase agreements.

Seeking Alpha and Utility Dive also note that Constellation has signed additional long-term agreements in the same period, including a separate contract with Amazon. While outlets largely agree on the Google deal’s size, term, and the 890 MW figure, they differ in emphasis—some focus on the PJM capacity addition, while others situate it within Constellation’s wider set of customer-linked nuclear investments.