PSO Rate Increase Approved for December 2026 in Oklahoma
PSO Rate Increase Approved for Oklahoma Customers Beginning December 2026
A PSO rate increase will take effect in December 2026 after the Oklahoma Corporation Commission (OCC) voted 2-1 on Thursday, November 5, to approve a permanent 3.55% residential rate increase for Public Service Company of Oklahoma customers. The decision establishes new electricity rates for households across the utility's service territory and replaces the temporary monthly charge customers have been paying since July.
The ruling follows months of debate over utility costs, customer protections and infrastructure investments. Since July 1, 2026, residential customers have been paying an interim charge of approximately $11 per month while regulators considered the company's rate request. Under the final order, those temporary collections will not be refunded to residential customers, although certain large industrial customers are expected to receive credits.
PSO Rate Increase Replaces Temporary $11 Monthly Charge
The approved 3.55% residential rate increase will begin appearing on customer bills during the December 2026 billing cycle.
Although the percentage increase has been finalized, the precise dollar impact on an average residential electricity bill has not yet been released. PSO has six days to submit revised tariffs and detailed financial calculations following the commission's decision.
Those filings will determine how the new rates affect customers based on electricity usage and applicable billing charges.
The Oklahoma Corporation Commission regulates investor-owned electric utilities, including PSO, and reviews rate applications involving operating expenses, infrastructure investments and customer costs.
For households already managing rising expenses, the new rates could add pressure to monthly budgets, particularly during periods of high electricity consumption.
Residential Customers Will Not Receive Refunds for Interim Charges
One of the most significant provisions involves the temporary $11 monthly charge that residential customers have paid since July.
Under the commission's final decision, residential customers will not receive refunds for those interim collections, even though the permanent rate structure differs from the temporary charges.
However, certain large industrial customer groups are expected to receive bill credits within 90 days for excess collections associated with their rate classifications.
The distinction raises questions about how interim utility rates are reconciled among different customer groups once permanent charges receive regulatory approval.
PSO, an operating company of American Electric Power, serves residential, commercial and industrial electricity customers throughout eastern and southwestern Oklahoma.
The company is expected to release additional details about the financial impact on residential customers after submitting its revised rate calculations.
New Data Center Tariff Aims to Protect Oklahoma Electricity Customers
The commission's decision also addresses the growing electricity demands associated with large industrial facilities and data centers.
A new large-load tariff is intended to ensure that high-demand customers pay for infrastructure and electrical system improvements required to serve their operations.
The provision follows Oklahoma's Data Center Customer Ratepayer Protection Act, which establishes safeguards designed to prevent costs associated with major new electricity users from being shifted unfairly onto existing residential and small-business customers.
These protections are increasingly important as data center development and industrial electricity demand expand across Oklahoma.
The Oklahoma Legislature has addressed concerns surrounding large-load electricity customers, infrastructure financing and the potential impact of major industrial projects on household utility bills.
The PSO rate increase will begin affecting Oklahoma electricity customers in December 2026, replacing temporary charges with a permanent 3.55% residential adjustment. While customers await exact billing figures, the decision also establishes new protections intended to keep major industrial electricity costs from falling on ordinary ratepayers.
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