Amazon signs a 20-year deal to buy 690 MW from Constellation Energy, helping the nuclear operator boost its capacity in Maryland, supporting $3B+ in investments
Amazon.com Inc. has agreed to purchase 690 megawatts of power from Constellation Energy Corp. in a deal that will help …
Context & Ripple Effects
Amazon has moved from backing a North Carolina wind farm to pursuing long-duration nuclear supply for its infrastructure. A 2024 regulatory rejection of an Amazon nuclear-power proposal in Pennsylvania made grid-reliability constraints a material part of that strategy; this Maryland contract establishes a different route to firm capacity.
Constellation has already used long-term technology-company commitments to support nuclear assets: Meta agreed to buy output from its Illinois plant, while Microsoft underwrote the planned Three Mile Island restart. Amazon's 20-year commitment extends that financing model to capacity expansion at Constellation's Maryland plant.
First-order effects
- Amazon secures 690 MW of contracted power for 20 years, tying a portion of its infrastructure expansion to Constellation's Maryland nuclear fleet.
- Constellation gains a long-term customer commitment supporting more than $3 billion of planned Maryland capacity investments.
Second-order effects
- Constellation can use the Amazon contract alongside its Illinois agreement with Meta to market long-duration nuclear supply to other large power buyers, rather than relying only on merchant power sales.
- Amazon's data-center supply chain is being built around both firm generation and resilience: the nuclear agreement complements its long-term backup-generator arrangement with Generac.
Third-order effects
- Long-term power contracts are becoming infrastructure-finance instruments: large compute buyers can help determine which generation upgrades receive committed capital.
- If this model spreads, access to contracted, dispatchable power may become a more consequential constraint on data-center expansion than the availability of sites alone.
The trend: Hyperscalers are treating long-duration power procurement as a core compute-capacity strategy, using contracts to finance generation as well as secure electricity.