Constellation and Walmart Announce Long-Term Agreement to Support Reliable, Emissions-Free Nuclear Energy in Illinois
Walmart's first nuclear PPA: ~176MW (incl 30MW uprate) from Dresden, two 15-yr terms starting 2029/2030 — first non-hyperscaler corporate buyer in the KB's PPA set
Constellation–Walmart Nuclear PPA (Dresden Clean Energy Center)
Abstract
On June 23, 2026, Constellation Energy and Walmart announced a long-term power-purchase agreement for emissions-free nuclear electricity from Constellation's Dresden Clean Energy Center in Illinois — Walmart's first nuclear PPA.
Key Contributions / Findings
- Capacity: ~176 MW of wholesale supply, including 30 MW of expanded generating capacity enabled by planned reactor uprates (efficiency upgrades to existing units, no new-build required).
- Term structure: two 15-year terms, beginning 2029 and 2030 respectively.
- Facility: Dresden Clean Energy Center, licensed to operate through 2049 and 2051; supports 1,100+ jobs.
- Supports a Walmart high-tech perishable distribution center under development in Belvidere, Illinois — i.e., this is industrial/retail load, not a hyperscaler AI datacenter — a distinct buyer segment from the Microsoft/Meta/Google deals already in the KB.
- Follows Constellation's December 2025 Dresden license-renewal announcement.
Why It Matters (lens: energy — nuclear fleet & restarts / AI power thesis)
Every PPA currently in the KB (Microsoft-TMI, Meta 6.6GW, Google-Kairos) is a hyperscaler deal. This is the first non-tech corporate buyer in the KB's PPA set, evidencing that the "premium, carbon-free, 24/7 power" pitch Constellation is running is landing beyond the AI-datacenter buyer class specifically — relevant to the LENS's "Nuclear Fleet & Restarts" chapter and to distinguishing genuine demand breadth from an AI-only bubble narrative. The uprate mechanic (30 MW of "new" capacity from efficiency gains on an existing, already-licensed unit) is also a faster, non-SMR lever for incremental nuclear supply worth tracking against the SMR-pipeline chapter's 2030+ timelines.
Limitations
- Pricing terms not disclosed (typical for these PPAs).
- Classified as
news/press-release rather than a regulatory filing; no SEC 8-K for this specific deal was located distinct from Constellation's routine quarterly-earnings 8-Ks.
Source: Constellation and Walmart Announce Long-Term Agreement — Constellation Energy Corp, June 23, 2026.