Department of Energy offers conditional $5 billion loan for Constellation nuclear uprates in three U.S. states

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DOE backs Constellation nuclear loan

Highlights

U.S. Department of Energy issued a conditional $5 billion loan offer for Constellation Energy's nuclear uprates and modernization across Illinois, Maryland, and Pennsylvania.
Planned investments at eight nuclear sites aim to increase output enough to power over 930,000 homes and support more than 10,000 project-related jobs.
Loan package aligns with President Trump's order and DOE's UPRISE initiative, with 94% of the administration's 5-gigawatt nuclear uprate goal already identified.

Nuclear upgrade funding and project scope

As reported by U.S. Department of Energy, citing the U.S. Department of Energy, the conditional financing would support uprates and modernization work across Constellation Energy's nuclear fleet in Illinois, Maryland and Pennsylvania. The department says the projects are expected to strengthen the grid and help lower costs for customers across the PJM Interconnection and Midcontinent Independent System Operator regions.

The package covers planned investments at Braidwood, Byron, Clinton, Dresden, LaSalle and Quad Cities in Illinois, Calvert Cliffs in Maryland, and Limerick in Pennsylvania. The department says the work would produce more electricity from existing nuclear plants and includes an option to finance future uprate projects at additional Constellation facilities.

The loan commitment remains conditional, and Constellation still must meet technical, legal, environmental and financial requirements before the department enters definitive financing documents and releases funds.

Grid, jobs and policy implications

The department says the modernization effort is expected to add enough electricity to power more than 930,000 homes. It also says the investment would support more than 10,000 project-related jobs across Constellation's nuclear fleet while adding more baseload power to the grid.

The loan aligns with President Trump's executive order, "Reinvigorating the Nuclear Industrial Base," which calls on the department to facilitate 5 gigawatts of power uprates from existing nuclear reactors. DOE launched its Utility Power Reactor Incremental Scaling Effort, or UPRISE, in March 2026, and says 94% of the administration's 5-gigawatt uprate and restart goal has been identified to date.

Our earlier article on U.S. AI data center expansion highlighted how rising financing costs, construction delays and grid limitations are forcing developers to scale back or postpone projects. We noted that investor confidence is increasingly tied to whether companies can secure reliable power, control overruns and deliver large builds on schedule.

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