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Amazon signs 20-year Constellation PPA tied to 190 MW of added capacity at Calvert Cliffs

Amazon has signed a power purchase agreement with Constellation for the Calvert Cliffs nuclear plant in Maryland. The 20-year deal will see 190 MW of capacity added to the plant. The source does not give pricing, the delivery timeline, or which Amazon facilities the power would serve.

Why it matters

Long-term PPAs that fund new capacity at existing nuclear plants are one way for data center builders and AI strategy leads to secure firm, low-carbon supply, though terms and timing here are not yet disclosed.

Original reporting: Data Center Dynamics

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