Overview
- Constellation and Amazon announced the 20‑year agreement on Wednesday that covers 690 megawatts of Calvert Cliffs output and supports more than $3 billion in plant upgrades.
- Planned work will uprate the plant by about 190 megawatts, raising capacity from roughly 1,790 MW to about 1,980 MW with the added output targeted for 2030–2032.
- All electricity from Calvert Cliffs will continue to flow into the PJM regional grid while a related retail supply deal gives Amazon price and supply certainty across PJM’s 13‑state market.
- Constellation says the corporate commitment provides the revenue certainty needed to seek a 20‑year relicensing extension for the two reactors and to evaluate advanced nuclear projects at the site, both of which require regulatory approval and community review.
- The deal follows Amazon’s recent withdrawal of plans for a hyperscale data center at Calvert Cliffs and signals a broader trend of tech companies using long-term power contracts to finance baseload clean energy while supporting local jobs and tax revenue.