McGuireWoods Advises Constellation in Clean Power Purchase Deal With Meta

Illinois Nuclear Facility to Support Tech Company’s Clean Energy Goals

June 4, 2025

McGuireWoods advised client Constellation in negotiating a 20-year power purchase agreement with Meta for the output of the Clinton Clean Energy Center in Illinois.

The agreement supports the relicensing and continued operations of Constellation’s high-performing Clinton nuclear facility for another two decades beginning in 2027 after Illinois’ ratepayer-funded zero emission credit program expires. The deal also advances Meta’s clean energy goals and operations in the region with 1,121 megawatts of emissions-free nuclear energy.

The agreement will enable the Clinton Clean Energy Center to continue to flow power onto the local grid, providing reliability and low-cost power to the region. The plant directly employs over 530 people, contributes approximately $13.5 million in annual taxes and generates enough electricity to power over 800,000 homes. Meta is purchasing the plant’s clean energy attributes as part of its commitment to match 100% of its electricity use with clean and renewable energy.

Partner Heather Welch Arbogast led the McGuireWoods deal team, which included associates Caitlin Haus, Michelle Lim and Mark Staines. It is the second major power purchase deal in the past year that the firm advised Constellation. The firm also represented Constellation in a groundbreaking 2024 agreement with Microsoft to launch the Crane Clean Energy Center, restarting Constellation’s Three Mile Island Unit 1 in Pennsylvania to produce carbon-free energy.

“We were proud to work with our valued client Constellation on another innovative power purchase agreement that will provide reliable, emissions-free energy to the region and benefit the local economy,” Arbogast said.

A Fortune 200 company headquartered in Baltimore, Constellation Energy Corp. is the nation’s largest producer of clean, carbon-free energy and a leading supplier of energy products and services to businesses, homes, community aggregations and public sector customers across the continental United States, including three-fourths of Fortune 100 companies.