OK — Power Infrastructure Updated 2026-07-17

Oklahoma

SPP Wind Storage Data Center PPAs Queue Bottlenecks Transmission Constraints

1) Grid operator and market structure

2) Interconnection queue, transmission planning, and SPP reforms

  • SPP Consolidated Planning Process approved: FERC accepted SPP’s Consolidated Planning Process (CPP) tariff revisions, effective Mar. 1, 2026, in Docket ER26-414. CPP integrates generator interconnection and transmission planning work, which matters for Oklahoma because large data-center loads are arriving while the region also needs faster generation and transmission additions. FERC Commissioner Chang concurrence, 2026-03-19; SPP/FERC order, 2026-03-13
  • HILLGA and CHILLS now effective: FERC accepted SPP’s High Impact Large Load Generation Assessment (HILLGA) in January. On June 5 it accepted Conditional High Impact Large Load Service (CHILLS) effective July 1: an as-available, curtailable service lasting no more than seven years while sufficient designated resources or network upgrades are completed. These regional rules affect Oklahoma data-center loads even though they are not Oklahoma-only tariffs. FERC HILLGA order concurrence, 2026-01-14; FERC SPP show-cause order, 2026-06-18
  • FERC ordered broader SPP tariff review: On June 18, FERC preliminarily found potential deficiencies in SPP’s rules for studying large loads, publishing upgrade/cost data, preventing wholesale transmission cost shifts, handling co-location and behind-the-meter generation, and offering flexible-load service. It ordered SPP to justify its existing tariff or propose reforms and separately required a generation-adequacy report within 30 days. This began a federal proceeding; it was not a final replacement tariff as of July 17. FERC, 2026-06-18; FERC Docket EL26-68-000 order, 2026-06-18
  • Resource adequacy fast-track: SPP’s Expedited Resource Adequacy Study (ERAS) remains a one-time fast-track generator-interconnection pathway to address near-term resource adequacy needs through 2030; FERC upheld approvals for SPP and MISO fast-track processes in early 2026. Utility Dive, 2026-02-24; SPP, 2025-07-31
  • Data center-specific queue visibility remains limited: SPP’s public generator-interconnection materials do not identify data-center load interconnections as a separate public queue category. Public visibility for Oklahoma data-center loads now comes mainly through state tariff proceedings, local land-use records, and project announcements, not a single SPP “data center queue.”

3) Ratepayer protection for large loads and data centers

  • HB 2992 effective statewide: The Data Center Customer Ratepayer Protection Act of 2026 took effect July 1. It defines covered large-load customers to include new data centers, cryptocurrency mines, and AI facilities adding 75 MW or more after that date; requires cost-causal separate tariffs/terms across IOUs, cooperatives, municipal utilities, and public power; and requires qualifying land-purchase notices. OCC published its notification-attestation form for the new law. Oklahoma Legislature HB 2992 enrolled bill, 2026-05-05; Oklahoma Corporation Commission attestation form, 2026-07-01
  • Minimum service/credit protections: HB 2992 requires large-load tariffs/terms to include credit requirements and other measures to recover fairly allocated costs, including costs that could remain unrecovered if a large-load customer departs or materially reduces load. The law also requires at least a ten-year service term, subject to a special rule for public power using tax-exempt municipal financing. Oklahoma Legislature HB 2992 enrolled bill, 2026-05-05
  • OG&E Extra Large Load Tariff filed: On June 17, OG&E applied in OCC Case PUD2026-000046 for a tariff covering new customers taking at least 75 MW, existing customers adding at least 75 MW, and certain customers growing above 125 MW. The proposal requires 100% upfront payment of interconnection costs, billing minimums, collateral, early-termination/capacity-reduction fees, a 15-year term, and no more than a five-year ramp. OG&E estimated that an associated monthly charge could produce $25 million-$30 million per year for possible residential bill credits. The application remained under OCC review as of July 17; the revenue and credits are proposals, not realized savings. OG&E, 2026-06-18; Oklahoma Corporation Commission docket, 2026-06-25
  • PSO tariff still pending in rate case: PSO included special large-load terms in OCC Case PUD2025-000075. After a June 30 settlement reduced the broader requested residential increase, the OCC took the rate case’s merits under advisement on July 8 and was still considering motions on July 16; the large-load terms were therefore not final as of July 17. Oklahoma Attorney General, 2026-06-30; Oklahoma Corporation Commission docket, 2026-07-08; Oklahoma Corporation Commission docket, 2026-07-16
  • Intervention dispute: Rep. Tom Gann appealed an OCC ruling denying his and more than 300 customers’ effort to intervene in the PSO case, arguing that the proceeding’s new large-load class and broader rate terms required fuller customer participation. The appeal concerns procedure and had not resolved the tariff merits by July 17. Oklahoma House of Representatives, 2026-07-07

4) Generation adequacy, utility cost recovery, and load-growth signals

  • OG&E cost-recovery dispute continued in 2026: In March 2026, Oklahoma Corporation Commissioners rejected an OG&E rate-increase request tied to construction costs for two new generation facilities east of Oklahoma City; reporting described the decision as a 2-1 vote and said OG&E planned to take the dispute to the Oklahoma Supreme Court. Journal Record, 2026-03-05
  • PSO capacity preapproval and appeal: On May 11, the OCC preapproved a PSO portfolio estimated at about $1.2 billion—two gas units, three battery-storage projects, and existing wind and gas PPAs—intended to meet rapid large-load growth, with the new large-load class expected to bear most costs as demand materializes. Rep. Tom Gann appealed the order on May 22, and AARP and the Oklahoma Industrial Energy Consumers joined the appeal on May 29; the dispute remained unresolved as of July 17. KGOU, 2026-05-13; Oklahoma House of Representatives, 2026-06-02
  • Meta’s Tulsa load planning: Meta states that it worked with PSO years in advance to plan for and meet the Tulsa data center’s energy needs, will pay the full costs of energy used by the data center, and has projects under contract adding more than 1,500 MW of clean energy to the Oklahoma grid. The public announcement did not disclose the Tulsa facility’s peak MW load. Meta Data Centers, 2026-04-21; Partner Tulsa, 2026-04-21
  • Google / Project Spring power commitments: Project Spring’s public materials state that the developer will fund local power infrastructure and that data centers are required to pay for new power lines or equipment needed to operate; the reviewed materials did not disclose a final MW demand. Project Spring, updated 2026-01-14
  • Google / OG&E agreements for three campuses: OG&E filed agreements to serve two new Google data centers in Muskogee and one in Stillwater. OG&E says Google will pay 100% of interconnection costs, remain responsible for contracted costs even if it does not use the full capacity, and pay its share of generation; the agreements were pending OCC approval. OG&E, 2026-04-30; Google, 2026-04-30
  • Core Scientific Muskogee capacity: Core Scientific’s pending Polaris Forge 2 acquisition includes 440 MW of continuous OG&E service agreements. The company describes a longer-term approximately 1.5 GW gross / 1 GW leasable Muskogee campus; these figures are secured rights and development targets, not all operating load as of July 17. Core Scientific SEC filing, 2026-05-06; Core Scientific, 2026-05-06
  • Claremore municipal-utility terms: Claremore’s public authorities approved an extra-large-load tariff and retail service agreement for Project Mustang up to 250 MW, plus supplemental wholesale supply arrangements; Ordinance 2026-12 requires mega-load users to bear service-attributable costs. City of Claremore meeting minutes, 2026-05-18
  • Statewide load-growth pressure: The 2026 legislative package and local moratoriums show that Oklahoma policymakers now treat data centers, AI facilities, and cryptocurrency mining as a distinct large-load planning class rather than ordinary commercial load. HB 2992’s 75 MW threshold is the clearest statewide definition for electric-service purposes. Oklahoma Legislature HB 2992 enrolled bill, 2026-05-05

5) Utility load forecasts and IRPs addressing data center demand

6) Behind-the-meter (BTM), co-location, and direct PPAs

  • HB 2992 includes a BTM carveout: The enacted definition of “large load customer” excludes entities that build generation for behind-the-meter projects, which may matter for data-center developers considering self-supply or co-located generation structures. Oklahoma Legislature HB 2992 enrolled bill, 2026-05-05
  • Oklahoma retail structure limits direct retail PPAs: Because Oklahoma is not a broad retail-choice state, data center power procurement for IOU service territories is expected to flow through regulated tariffs, special contracts, utility programs, or wholesale/BTM structures rather than ordinary competitive retail supply. Oklahoma Corporation Commission Public Utility Division, accessed 2026-06-10; U.S. Energy Information Administration, accessed 2026-06-10
  • State-specific BTM evidence remains sparse: No Oklahoma OCC order located in this update publicly documents an operating data-center BTM generation arrangement. The clearest public BTM-related item is HB 2992’s statutory carveout, not a project-specific approval.

7) Transmission constraints and upgrades relevant to data center siting

Notes on gaps