Duke Energy Ohio Inc
Investor Owned electric utility · Ohio · #123 of 3,199 U.S. utilities by customers · EIA utility #3542
Duke Energy Ohio Inc is a investor owned electric utility serving 297,189 customers in Ohio. In 2025 it sold 3,952 gigawatt-hours of electricity for $638.19M in revenue, an average realized rate of 16.15¢ per kWh across all customer classes and 16.83¢ per kWh for residential customers. Its reported service territory covers 23 counties. EIA records its activities as: transmission, buying transmission, distribution, wholesale marketing, bundled.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 277,897 | 3,053 | $513.71M | 16.83¢ | |
| Commercial | 19,054 | 819 | $115.59M | 14.11¢ | |
| Industrial | 238 | 80.2 | $8.89M | 11.08¢ | |
| Total | 297,189 | 3,952 | $638.19M | 16.15¢ |
Average realized rate = revenue divided by sales as reported on EIA Form 861. It blends fixed charges, demand charges and riders into one per-kWh figure; it is not the utility's tariff rate. Estimated residential bill assumes the average residential customer's actual 2025 usage (915 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 276,685 | 3,775 | $407.22M | 11.20¢ |
| 2022 | 330,870 | 6,075 | $587.11M | 11.80¢ |
| 2023 | 360,034 | 6,375 | $786.79M | 14.73¢ |
| 2024 | 316,504 | 4,361 | $610.53M | 15.00¢ |
| 2025 | 297,189 | 3,952 | $638.19M | 16.83¢ |
Reliability (2025)
Average outage time (SAIDI): 178 minutes per customer per year
Average outages (SAIFI): 1.01 per customer
Average restoration time (CAIDI): 175 minutes
As reported for Ohio under the IEEE standard, with major event days included where the standard reports them. Lower is better; see the reliability rankings.
Energy supply (2025)
Net generation: — GWh
Wholesale power purchased: 4,971 GWh
Winter peak demand: 904 MW
Meters & rooftop solar (2025)
Smart (AMI) meters: 99.7% of 782,771 meters
Customer-sited generation (net metering): 6,472 installations, 73.0 MW of capacity
This utility also reported 469,349 delivery-only customers (15,772 GWh delivered) in 2025. Delivery figures are excluded from the totals above because the same electricity is also reported by the energy supplier - see Methodology.
Counties served
Adams, OHBrown, OHButler, OHClark, OHClermont, OHClinton, OHCoshocton, OHDelaware, OHFairfield, OHFranklin, OHGreene, OHHamilton, OHHighland, OHLicking, OHMadison, OHMontgomery, OHMuskingum, OHPickaway, OHPike, OHPreble, OHRoss, OHScioto, OHWarren, OH
Other large utilities in Ohio
- Adjustment 2025 - 4,559,641 customers, residential 13.93¢
- Dynegy Energy Services, LLC - 793,547 customers, residential 9.00¢
- NextEra Energy Services, LLC - 753,301 customers, residential 9.28¢
- AEP Energy - 618,459 customers, residential 8.66¢
- Ohio Power Co - 594,848 customers, residential 18.97¢
- Energy Harbor Corp. - 410,524 customers, residential 7.89¢
- Interstate Gas Supply, Inc. - 322,025 customers, residential 11.51¢
- Ohio Edison Co - 286,197 customers, residential 16.01¢
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #3542 in the EIA frame.