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Tariff Filing Shows Duke Ohio Residential, Small C&I Default Service Rate To Unexpectedly Jump 30%, Not Due To Current Market Rates
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Duke Energy Ohio's price to compare for residential and small and large general service natural gas customers will jump 30% on June 1, per a tariff filing from Duke Energy Ohio. ECM takes the tariff filing as facially correct, although errors in tariff filings are not uncommon
Duke Energy Ohio's SSO rate for gas customers changes monthly based on NYMEX pricing, but the June 1 increase is being driven by a significant increase in the bypassable reconciliation component, not NYMEX prices (with the "supply" portion of the PTC actually decreasing in June versus May).
Specifically, Duke has filed a tariff with PUCO to update the bypassable Standard Service Offer Cost Reconciliation Rider (SSOCR) to be a charge of $0.275800 per Billing CCF effective June 1, from the current credit of $(0.008500) per Billing CCF. While a swing of nearly 30 cents per CCF is not typical, ECM again takes the tariff filing as facially correct
Under the SSOCR increase described above, Duke's price to compare for gas SSO service for June would be $0.985000 per CCF, or 30% higher than the May PTC of $0.758600 per CCF
The June PTC reflects the sum of the "Standard Service Offer Rate" (NYMEX price plus the retail adder set in the SSO auction and other customary adjustments such as LAUF and BTU factor) of $0.709200 per CCF (down from $0.767100 for May) plus the SSOCR charge of $0.275800 per CCF
Notably, Rider SSOCR is, going forward, adjusted on a quarterly basis, meaning that the next update is expected to be effective on September 1. That means an adder of nearly 28¢ per CCF will be added to the otherwise applicable SSO supply rate for 3 months.
The SSOCR is bypassable unless 90% of Duke Ohio gas customers migrate to competitive retail suppliers, and only upon application at, and approval from, PUCO (the change to nonbypasable status is not automatic). Duke's SSO auction is wholesale, not retail, so SSO customers are not being served by competitive retail suppliers, and the migration level at Duke is understood to be less than the 90% trigger (migration stood at 63% as of Q4 2025). As of publication time, there was no indication in documents appearing on PUCO's online docket system that Duke had made an application to make Rider SSOCR nonbypassable
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May 11, 2026
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Copyright 2026 EnergyChoiceMatters.com
Reporting by Paul Ring • ring@energychoicematters.com
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