Ohio · Duke Energy Ohio
Duke Energy Ohio electricity rate history
Every approved residential rate revision for Duke Energy Ohio, drawn from the NREL Utility Rate Database. Use this page to read where today's rate sits in the historical picture — and to time a supplier switch with that context.
Quick answer
How much has Duke Energy Ohio’s rate changed since I last shopped? The chart below shows every approved residential rate revision for Duke Energy Ohio on file with the URDB. Scroll to compare today’s rate against the same month in any prior year — the gap is what a non-shopping customer has absorbed.
How much has Duke Energy Ohio’s rate gone up since I last shopped?
Duke Energy Ohio's Price to Compare — the per-kWh rate against which all competitive supplier offers should be measured — resets through PUCO-approved supply auctions. Each revision below corresponds to one of those resets. Cincinnati-area customers who have never shopped have paid every rate in this history in sequence.
Rate increases compound. A 10% step-up isn’t paid once — it’s the floor under every kWh you’ll buy until the next reset. Three of those in a decade is the difference between a household that pays attention at contract renewal and one that doesn’t. That’s the case for keeping a per-utility historical view honest and in one place.
Tap or hover any point to see the exact effective date, revision name, and rate. Toggle to table view for the full chronological list with fixed monthly charges.
How to read this history if you're shopping for a better rate
A Cincinnati customer using 1,000 kWh/month who stayed on the Price to Compare during a high-PTC stretch paid noticeably more than one who locked in a 12- or 24-month fixed-rate supply offer at the time. The lever is shopping the Apples to Apples list every renewal — and using this history to read whether a posted PTC is high or low by historical standards.
Three useful comparisons
- Today vs. five years ago. Look at the most recent revision in the chart against the one effective ~5 years before. That's the compounded shift — the lift a non-shopping customer absorbed.
- Today vs. recent low. The lowest rate in the past three years is the rough floor a competitive supplier could have offered at the time. If today's rate is well above that floor, a fixed-rate offer locked in at the low would still be saving its customer money right now.
- Step size of changes. Are revisions small and frequent, or large and rare? Large step-ups are the moments where switching ahead of the change pays the most — and they show up clearly in the chart as steep stair-treads.
Methodology & sources
Revisions on this page come from the U.S. Utility Rate Database (URDB) , maintained by the National Renewable Energy Laboratory (NREL). URDB aggregates approved residential, commercial, and industrial tariff filings — the same documents utilities file with their state public utility commissions.
We filter to Duke Energy Ohio's residential default service (the rate non-shopping customers pay), sorted by effective date, and show every approved revision back to the earliest URDB record for the utility. The "source" link on each revision in the table points to the original tariff filing PDF on the utility or commission website.
Refresh cadence: URDB updates daily as new tariff filings are approved. We re-sync monthly and update this page on the next deploy. The "last updated" date at the top of the page reflects the most recent sync.
Service territory: Greater Cincinnati metropolitan area.
URDB is public-domain federal data (NREL / U.S. Department of Energy). Attribution is courtesy, not required — we cite it because the source matters.
Keep going
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Duke Energy Ohio — current rates & plans
Compare today's competitive supplier offers in Duke Energy Ohio territory.
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What's actually on your Ohio electric bill
Fixed charges, delivery costs, and where the per-kWh number fits in the full picture.
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Bill Grade tool
Upload a recent bill — get a grade and the cheapest plan available in your ZIP, with savings math.
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Ohio electricity market overview
How rates, switching, and the Ohio retail market work in plain English.
Other Ohio utility rate histories
Side-by-side, the Ohio histories tell you how each utility's customers have fared.
Source: National Renewable Energy Laboratory (NREL) — U.S. Utility Rate Database (openei.org/wiki/Utility_Rate_Database). Public-domain federal data. Each revision row links to the original tariff filing on the utility or commission website. Last synced from URDB: 2026-06-01.