Adair County
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Sales tax (Tax Commission rules): machinery and equipment such as computers and servers bought by a computer and data processing business (SIC 7374) are exempt if at least 80% of its yearly gross revenue comes from out-of-state buyers (OAC 710:65-13-54); electricity is not covered. A separate exemption for web search portals (68 O.S. §1357(38), NAICS 519130, same 80% test; OAC 710:65-13-650) does cover electric power, according to the Commerce Department. (Oklahoma Department of Commerce, undated; Oklahoma Administrative Code (via Cornell LII), undated; Oklahoma Administrative Code (via Justia), undated) Property tax: the five-year manufacturing ad valorem exemption (68 O.S. §2902(C)(5)) covers NAICS 518210 data processing sites that add $7 million in capital improvements or $250,000 in annual payroll. The general provision applies to assets placed in service by the end of 2021; sites that already had an exemption in the five years before Nov. 1, 2021 can claim personal property placed in service through 2036. A November 2024 review for the state Incentive Evaluation Commission found Google took 97.6% of data processing exemptions in FY2016–FY2020, and state reimbursements for computer data processing reached $46.6 million in 2022. (Oklahoma Incentive Evaluation Commission (PFM Group Consulting), Nov. 14, 2024; Oklahoma Department of Commerce, undated) HB 2992 (2026), the Data Center Customer Ratepayer Protection Act (17 O.S. §§900-906), was approved by the governor May 11, 2026 and took effect July 1. It covers new data centers, crypto mines and AI computing sites that contract to add 75 MW or more after July 1, 2026. Electric suppliers must give them separate terms so other customers don't carry their costs. Buyers of land outside a municipality or industrial park must notify the Corporation Commission, the county commissioners and abutting owners within 60 days, by certified mail (§906). The OCC posted an attestation form for this. (Oklahoma Corporation Commission, July 29, 2026; Oklahoma Corporation Commission, 2026; Oklahoma House of Representatives, May 13, 2026; KGOU / StateImpact Oklahoma, May 13, 2026) SB 259 (2026), the Groundwater Modernization Act, was approved May 20, 2026 and takes effect Nov. 1, 2026. Groundwater permit holders must file yearly use reports with the Water Resources Board. A data center can get a groundwater permit only if it uses closed-loop, immersion or other low-consumption cooling, not open evaporative systems. The rule doesn't reach centers that buy water from a utility or water district, a gap the bill's House author said he plans to address with a new bill next year. (Oklahoma House of Representatives, Aug. 6, 2026; KGOU / OPMX, April 13, 2026; Investigate Midwest, July 14, 2026) SB 480 (2025) allows private behind-the-meter power generation, which The Frontier described as letting data centers make their own electricity without being regulated as utilities. HB 2992 excludes entities that build behind-the-meter generation from its large-load rules. The Frontier reported Aligned would be among the first to use this law, near Amber. (Oklahoma Department of Commerce, June 6, 2025; Oklahoma Corporation Commission, July 29, 2026; The Frontier, Sept. 23, 2026) Bills that failed in 2026: SB 1488 (Sen. Sacchieri), introduced in January 2026, would have stopped new data center construction until Nov. 1, 2029 while the Corporation Commission studied water, rates, property values and siting; it never got a hearing. HB 3392 (OCC study of large users), HB 3394 (data center directory) and HB 3397 (separate rate class) were also filed; The Frontier reported that only two data center bills, HB 2992 and SB 259, passed and at least five others failed. Oklahoma has no statewide moratorium. (Oklahoma Legislature, Jan. 9, 2026; DCD, Jan. 26, 2026; HPPR / StateImpact Oklahoma, Feb. 16, 2026; The Frontier, Sept. 23, 2026) OCC Cause No. PUD2025-000075 (Public Service Company of Oklahoma rate case, filed January 2026): PSO proposed new terms under its Large Power and Light tariff so new large customers pay their full grid connection costs. The large-load tariff was split onto its own testimony track in June 2026. An administrative law judge's report, filed Aug. 21, 2026, recommended a new rate class for customers adding more than 75 MW, which PSO did not join. Commissioners had not issued a final order as of September 2026. Interim rates, subject to refund, took effect July 1, 2026. (Edison Electric Institute, Oct. 2026; Oklahoma Energy Today, April 27, 2026; Citizen Portal, June 29, 2026; Tulsa Flyer, Aug. 24, 2026; KOKH Fox 25, Sept. 8, 2026) OCC Cause No. PUD2026-000046 (OG&E Extra Large Power and Light tariff, filed June 17, 2026): it would apply to new loads of 75 MW or more, or to existing customers adding 75 MW or growing past 125 MW. Terms include 15-year contracts with a ramp of up to five years and minimum bills. A monthly charge would fund $25-30 million a year in credits to residential customers. A July 2026 order set Nov. 3, 2026 for a decision, but on Oct. 21 commissioners voted 3-0 to extend the case and send it back to an administrative law judge, citing legal and jurisdictional issues raised in testimony. A hearing on the merits is set for Jan. 12, 2027, so a decision is now expected in 2027. (OG&E, June 18, 2026; KGOU / StateImpact Oklahoma, June 18, 2026; Oklahoma Energy Today, July 10, 2026; Oklahoma Energy Today, Oct. 22, 2026; Edison Electric Institute, Oct. 2026) Siting: no state data center siting law exists beyond HB 2992's land-purchase notice. Grady County's legal counsel advised in September 2026 that only municipalities, not counties, can adopt a data center moratorium. Lawton set its threshold at 2 MW, which local reporting called the most restrictive level state law allows. (KGOU / OPMX, Sept. 30, 2026; The Frontier, Sept. 23, 2026; KSWO, Feb. 25, 2026) Oklahoma data centers →