Key Highlights
- Constellation Energy and Walmart have finalized a 15-year nuclear energy purchase contract
- The agreement covers approximately 176 megawatts generated from the Dresden Clean Energy Center located in Illinois
- An additional 30 megawatts will come from forthcoming efficiency improvements at the Dresden facility
- Energy supply will commence through two separate agreements beginning in 2029 and 2030
- This marks Walmart’s inaugural nuclear energy contract and represents one of the earliest such agreements between a leading U.S. retail chain and a nuclear power supplier
On Tuesday, Constellation Energy (CEG) and Walmart (WMT) revealed a groundbreaking long-term nuclear energy purchase contract, representing an unprecedented partnership between a prominent American retailer and a nuclear power producer.
At the time of publication, CEG stock was experiencing gains of 0.54%, trading at $275.53.
Constellation Energy Corporation, CEG
The contract stipulates that Constellation will deliver approximately 176 megawatts of power from its Dresden Clean Energy Center facility situated in Morris, Illinois. This total incorporates 30 megawatts of new capacity resulting from scheduled efficiency enhancements at the site.
The electricity will power Walmart’s advanced perishable goods distribution facility currently being constructed in Belvidere, Illinois. This represents Walmart’s maiden venture into nuclear energy procurement.
The arrangement encompasses two separate 15-year agreements, with energy delivery scheduled to begin in 2029 and 2030. Walmart will acquire energy, associated environmental credits, and capacity through both contractual arrangements.
This partnership also provides economic justification for investing in “uprates” at Dresden — operational enhancements that increase electricity production from current nuclear infrastructure without requiring new construction. This approach offers a comparatively economical method to introduce additional carbon-free power to the electrical grid.
Understanding the Dresden Clean Energy Center
Dresden ranks among Constellation’s most significant nuclear facilities. The plant holds operational licenses extending through 2049 and 2051 and provides employment for over 1,100 individuals in the surrounding area. Constellation secured Dresden’s license renewal in December 2025.
Constellation manages 55 gigawatts of aggregate generating capacity spanning nuclear, natural gas, geothermal, hydroelectric, wind, and solar installations.
Jim McHugh, Constellation’s Senior Executive Vice President and Chief Commercial Officer, stated the agreement “reflects long-term stewardship of critical infrastructure, the communities it serves, and the energy system that powers American growth.”
Walmart maintains approximately 175 retail locations and club stores throughout Illinois, employing more than 55,000 team members statewide.
Increasing Corporate Interest in Nuclear Energy
Nuclear power appeals to major corporations because it delivers consistent carbon-free electricity — operating continuously regardless of time or season, unlike renewable sources such as solar or wind that fluctuate with environmental conditions.
This agreement aligns with an emerging trend of major enterprises securing extended nuclear power contracts to simultaneously address energy requirements and environmental responsibility objectives.
Constellation has been pursuing multiple strategic initiatives recently. Bernstein SocGen Group recently launched coverage with an outperform designation, highlighting the organization’s 22 gigawatts of nuclear generation capacity and its Calpine acquisition as significant advantages.
Constellation also recently finished a 25-megawatt geothermal expansion at The Geysers facility in California via its Calpine division, contributing sufficient electricity for more than 25,000 households each year.
The organization additionally disclosed a secondary stock offering of 11 million shares priced at $281 per share, although Constellation will not retain proceeds from this transaction.
Dresden’s twin reactors are authorized to operate through 2049 and 2051, providing both parties with an extended timeframe under this new partnership.
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