Amazon and Constellation signed a 20-year power purchase agreement supporting upgrades at Maryland’s existing 1,790-megawatt Calvert Cliffs nuclear plant.

Utility Dive reports a signed 20-year power purchase agreement (PPA) between Amazon and Constellation. The agreement supports improvements and renovations at the Calvert Cliffs Clean Energy Center in Maryland.

The source identifies Calvert Cliffs as an existing 1,790-megawatt plant and Maryland’s largest source of clean energy. That figure describes the plant’s capacity, not the size of an incremental upgrade or the amount of electricity Amazon contracted to purchase.

The article headline describes expansion, while its summary specifies improvements and renovations. The supplied material does not quantify additional megawatts, the PPA’s contracted volume or price, upgrade spending, or completion timing.