AWS Proposes Data Center Campus Adjacent to Nuclear Plant in Calvert County, Maryland

Amazon Web Services has proposed building a data center campus next to the Calvert Cliffs Nuclear Power Plant in Calvert County, Maryland, according to Data Center Dynamics, in a move that would position AWS to draw directly on nuclear-generated electricity for its AI infrastructure. The proposed campus would be located near the Calvert Cliffs facility, which is operated by Constellation Energy and produces approximately 1,700 megawatts of zero-carbon power. Co-locating a data center with a nuclear plant would give AWS a reliable, carbon-free power source at the scale required to run large AI workloads -- a combination that has become increasingly sought after as data center operators face pressure to reduce emissions while dramatically expanding capacity. The proposal follows a broader trend of cloud providers and AI companies seeking direct agreements with nuclear power operators. Microsoft struck a deal last year to restart the Three Mile Island nuclear plant in Pennsylvania to power its data centers, and several other hyperscalers are in discussions with nuclear operators across the United States and Europe. Nuclear power is attractive for data center operators for several reasons: it provides baseload power that runs continuously regardless of weather conditions, it has a very small physical footprint relative to its output, and it produces no direct carbon emissions -- a consideration as corporate sustainability commitments tighten. The Calvert Cliffs proposal remains in early stages and would require regulatory review before construction could begin. Data Center Dynamics reported the proposal on April 1, 2026.