Amazon, Constellation sign 20-year PPA for Maryland nuclear plant

· Energy · United States

Amazon and Constellation have signed a 20-year power purchase agreement to expand a Maryland nuclear plant, backing improvements and renovations at the 1,790-MW Calvert Cliffs Clean Energy Center, the state's largest source of clean energy. The deal ties a major technology company's long-term electricity demand to an existing nuclear generator, a structure increasingly used to secure around-the-clock carbon-free power for data centers and corporate operations. It highlights how tech firms are contracting directly with nuclear operators to lock in supply as power demand rises. The agreement supports continued operation of a key clean energy asset in the mid-Atlantic.

Why it matters：Long-term corporate PPAs with nuclear plants show how tech demand is reshaping power procurement and keeping existing clean generation online.

Key points

  • The 20-year PPA backs renovations at the 1,790-MW Calvert Cliffs plant.
  • Calvert Cliffs is Maryland's largest source of clean energy.
  • Amazon is contracting directly with nuclear operator Constellation.

Sources (original reporting)

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