Amazon, Constellation Ink $3B Nuclear Expansion Deal at Calvert Cliffs
Event summary
- Constellation and Amazon signed a 20-year power purchase agreement for 690 MW, including 190 MW of new nuclear capacity at Calvert Cliffs.
- The deal will trigger $3B in infrastructure investment and extend the plant's operational license by 20 years.
- New capacity will come online between 2030-2032, adding to Maryland's largest clean energy source.
- Amazon will use the agreement to stabilize energy costs across its PJM market operations.
The big picture
This agreement represents one of the largest private-sector commitments to nuclear expansion in recent years, reflecting corporate demand for stable, carbon-free baseload power. The deal underscores how hyperscalers are increasingly acting as anchor tenants for clean energy infrastructure projects. With 1,790 MW of existing capacity, Calvert Cliffs serves as a critical case study in extending the operational life of aging nuclear facilities through private investment.
What we're watching
- Regulatory Dynamics
- Whether Maryland's policy environment will support additional nuclear investments beyond this project.
- Execution Risk
- The pace at which Constellation can deliver the 190 MW uprate and related plant improvements.
- Market Impact
- How this deal affects PJM's grid reliability metrics and regional power pricing dynamics.
Related topics