The cloud computing firm is expanding its energy supply from the Calvert Cliffs plant in Maryland to support its growing infrastructure. Amazon has agreed to purchase 690 MW of power from Constellation, the largest US nuclear operator, to boost capacity at the state's only nuclear reactors. The technology company will also help expand existing power generation at the site and explore the construction of new reactors.

The deal is a 20 year power purchase agreement and follows the cancellation of a separate data center project. This move mirrors a trend among hyperscalers seeking dedicated carbon-free energy to manage the increase in electricity demand driven by artificial intelligence workloads.