Oklahoma Regulators Set to Rule on PSO's $1.255 Billion Power Expansion Request
According to Oklahoma Energy Today, Oklahoma Corporation Commissioners are expected to vote Monday, May 11, on Public Service Company of Oklahoma’s $1.255 billion request to expand generation capacity across the state, a decision that had a regulatory deadline of May 10 under Oklahoma Corporation Commission rules.
What’s Being Decided
The proposal, filed as Case No. PUD2025-000064, covers eight separate generation projects totaling 1,200 MW of new capacity. The resource mix includes three wind projects, three battery energy storage systems, and two natural gas resources. PSO also seeks preapproval of one self-build gas project that would provide 450 MW on its own. The Tulsa-based utility serves 562,000 customers across eastern and southwestern Oklahoma.
PSO has warned that without new capacity, its summer power position will fall short by 10 MW in 2027, growing to a 470 MW deficit in 2028 and a 1,766 MW shortfall by 2029. The request drew opposition from the Oklahoma Attorney General’s office, AARP, the Petroleum Alliance of Oklahoma, and the Oklahoma Industrial Energy Consumers.
One complicating factor: PSO filed lawsuits in Rogers County District Court in December 2025 and again in January 2026 after a rezoning denial blocked the site of its planned Oologah power plant. Commission Chair Kim David indicated her proposed order would tie cost recovery to resolution of that dispute, noting that Construction Work in Progress, or CWIP, recovery would cease once facilities enter service.
What It Means for Subcontractors
- Natural gas construction work is on the table. PSO is seeking preapproval for a self-build 450 MW gas resource. If approved, that project will require civil, mechanical, and electrical contractors for site prep, turbine installation, and interconnection work.
- Battery storage is a growing line item. Three BESS projects are included in the package. Firms with experience in battery storage installation, foundation work, or electrical integration should be watching this approval closely.
- The Rogers County legal dispute could delay or reshape work. PSO’s Oologah site faces an active rezoning lawsuit. Subcontractors should track that case before counting on that project entering their pipeline, as cost recovery is contingent on its resolution.
- Wind project work may also follow. Three wind resource agreements are part of the approved mix. Subcontractors in foundation, erection, and transmission work across eastern and southwestern Oklahoma have potential opportunities if all eight projects proceed.
- Regulatory timing matters for planning. The 240-day OCC review window drove this deadline. Subcontractors bidding on utility-scale work in Oklahoma should understand that commission approval, not just contract award, is the critical milestone to track.
