Amazon Web Services has formally withdrawn its application to develop a large-scale data center campus near the Calvert Cliffs Nuclear Power Plant in Lusby, Maryland, abandoning a project that could have delivered up to 500 megawatts of capacity across more than 2.46 million square feet of space.

Withdrawal Confirmed by County Government

Calvert County Government announced on August 4, 2026, that Amazon Data Services Inc., also referred to as AWS, had formally withdrawn its Calvert Technology Center Conceptual Site Development Plan application.

The county stated that the company "has decided not to pursue the proposed data center project in Calvert County." AWS submitted the Conceptual Site Development Plan application in May 2026 for the proposed development at 1650 Calvert Cliffs Parkway in Lusby, Calvert County.

Amazon had first revealed plans in April 2026 to potentially develop a data center near the nuclear facility. Data Center Dynamics reached out to AWS for comment but had not received a response at the time of publication.

Scale of the Abandoned Project

Documents filed with Calvert County outlined an ambitious development footprint. The proposed campus would have spread across eight buildings totaling more than 2.46 million square feet, equivalent to approximately 228,540 square meters.

The campus was reported to have totaled around 500 megawatts of capacity, with power to be supplied through an agreement with Constellation Energy.

The site address at 1650 Calvert Cliffs Parkway placed the proposed campus in close proximity to the Calvert Cliffs Nuclear Power Plant, making the power sourcing arrangement with Constellation Energy a central element of the development's design.

Moratorium Adds Pressure to Data Center Development in the County

The withdrawal comes as Calvert County is actively considering a temporary moratorium on data center development.

The county council was set to vote on the measure around the time of the announcement, with a public hearing on the moratorium scheduled for August 18, 2026.

The proposed ordinance would establish a six-month pause to allow county officials time to review and adopt regulations and zoning ordinance text amendments related to data centers and heavy industrial use conditions, and to complete any necessary studies or analysis.

Whether the moratorium influenced AWS's decision to withdraw its application was not addressed in the county's announcement or in documents made publicly available.

Adjacent Land Still Attracting Developer Interest

Despite AWS's exit, other development interest in the area has not entirely evaporated.

Natelli Holdings has expressed interest in developing land south of where the proposed AWS campus would have been located, at addresses on Solomons Island Road.

That activity suggests the corridor near the nuclear plant continues to draw attention from developers despite the regulatory uncertainty created by the pending moratorium discussion.

AWS Faces Separate Infrastructure Hurdles in Maryland

The Calvert County withdrawal is not the only infrastructure setback Amazon is encountering in Maryland. The company's planned Fastnet subsea cable, which is intended to connect the United States to Ireland with a landing point at Ocean City in Worcester County, is also facing complications.

Globalinx is set to develop the cable landing station that will host the Fastnet cable, but Worcester County has imposed a 12-month moratorium on permits for data centers and cable landing stations in the area. Globalinx told local press that the moratorium has not ended its agreement with Amazon, suggesting the project remains active despite the permitting freeze.

The two separate regulatory obstacles in Maryland reflect a broader pattern of local governments moving to slow or pause data center development while they assess the infrastructure, zoning, and land-use implications of large-scale facilities.

In Calvert County, the proposed temporary moratorium would apply specifically to data centers and heavy industrial uses, giving county planners time to establish a regulatory framework before additional projects advance through the application process.

For the Calvert Technology Center project specifically, the formal withdrawal of the Conceptual Site Development Plan application closes out a proposal that had been in discussion since at least April 2026 and formally entered the county's planning process in May 2026.