Uprates, which lift a reactor's output through turbine, equipment and fuel changes, have become one of the quickest routes to new baseload supply as data centers push demand higher. The Office of Energy Dominance Financing offered a conditional loan commitment of up to $5 billion to finance uprates and modernization across Constellation's reactors in Illinois, Maryland and Pennsylvania, the department said.
Constellation owns the largest reactor fleet in the United States, concentrated in the Midwest and Mid-Atlantic markets the loan would cover. The company has already been steered toward uprates by its biggest customers. Long-term supply agreements with Google and Amazon have prompted billions of dollars of planned investment in added nuclear capacity, and the federal commitment is intended to lower the cost of financing that work, the company said. Constellation has cautioned that the commitment does not by itself amount to a decision to proceed at every site, and is subject to the completion of due diligence and further negotiation.
Uprates are a different kind of federal bet from the reactor restarts and new builds that have drawn most of the attention in recent years, since the plants already run and the extra output comes from equipment inside the fence. The approach fits the department's broader push to pull more generation from reactors already in service. Any added output would flow into PJM and MISO, the two wholesale markets that cover the eligible plants. Energy Secretary Chris Wright unveiled the new financing at an Illinois plant on Tuesday, and Constellation shares climbed 2.6% on the news, Bloomberg reported. Next steps for the company run through the department, regulators and local stakeholders on a project-by-project basis.