Amazon has entered into a 20-year agreement with Constellation Energy to secure 690 megawatts of nuclear power from the Calvert Cliffs Clean Energy Center in Maryland, supporting more than $3 billion in infrastructure investment as electricity demand rises [1]. The deal includes a planned 190-megawatt expansion at Calvert Cliffs, expected to be operational between 2030 and 2032 [1]. Additionally, Amazon and Constellation have signed a retail electricity supply agreement covering Amazon's operations across the 13-state PJM market, which is intended to help Amazon manage energy costs throughout the region [1].
This long-term commitment provides Constellation with greater revenue certainty as it seeks to extend the operating licenses of Calvert Cliffs for another 20 years; the plant's two reactors are currently licensed through 2034 and 2036 [1]. Calvert Cliffs is Maryland's only nuclear power plant, capable of producing up to 1,790 megawatts of electricity—enough to power more than 1.3 million homes—and employs over 800 people [1].
The agreement comes as Amazon and other technology companies require large amounts of reliable electricity to support expanding data center and artificial intelligence infrastructure, prompting renewed corporate interest in nuclear power as a source of around-the-clock generation [1]. Amazon has previously invested $500 million in advanced nuclear developer X-energy and entered into an agreement with Energy Northwest to support the development of small modular reactors in Washington state [1].
Electricity generated at Calvert Cliffs will continue to flow into the PJM regional grid rather than being routed exclusively to Amazon facilities, demonstrating how private investment can strengthen critical energy infrastructure, according to Constellation Chairman, President and CEO Joe Dominguez [1]. Kerry Person, vice president of AWS Global Operations and Data Center Delivery, stated that the agreement sustains the continued operation and expansion of Maryland's largest source of carbon-free energy, supports hundreds of jobs, and brings significant new generation to the regional grid [1].
CONCLUSION
Amazon's 20-year nuclear power deal with Constellation marks a significant step in securing reliable, carbon-free energy to support its growing infrastructure needs. The agreement is expected to bolster Maryland's energy grid, support job creation, and provide revenue certainty for Constellation as it pursues license extensions for Calvert Cliffs. This move underscores the increasing importance of nuclear energy in powering large-scale technology operations.