Niagara Mohawk Power Corp.
Investor Owned electric utility · New York · #21 of 3,199 U.S. utilities by customers · EIA utility #13573
Niagara Mohawk Power Corp. is a investor owned electric utility serving 1,582,394 customers in New York. In 2025 it sold 16,474 gigawatt-hours of electricity for $2.98B in revenue, an average realized rate of 18.11¢ per kWh across all customer classes and 19.89¢ per kWh for residential customers. Its reported service territory covers 37 counties. EIA records its activities as: transmission, buying transmission, distribution, buying distribution, wholesale marketing, retail marketing, bundled.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 1,449,428 | 11,346 | $2.26B | 19.89¢ | |
| Commercial | 132,342 | 4,160 | $632.56M | 15.21¢ | |
| Industrial | 624 | 969 | $94.12M | 9.72¢ | |
| Total | 1,582,394 | 16,474 | $2.98B | 18.11¢ |
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 (652 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 1,459,832 | 15,172 | $2.03B | 14.89¢ |
| 2022 | 1,502,306 | 15,389 | $2.62B | 18.64¢ |
| 2023 | 1,542,714 | 15,326 | $2.31B | 16.97¢ |
| 2024 | 1,559,866 | 16,341 | $2.38B | 17.22¢ |
| 2025 | 1,582,394 | 16,474 | $2.98B | 19.89¢ |
Reliability (2025)
Average outage time (SAIDI): 242 minutes per customer per year
Average outages (SAIFI): 1.39 per customer
Average restoration time (CAIDI): 174 minutes
As reported for New York 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: 17,908 GWh
Winter peak demand: 5,236 MW
Energy losses: 7.7% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 60.6% of 1,757,937 meters
Customer-sited generation (net metering): 30,827 installations, 2,186.1 MW of capacity
This utility also reported 141,759 delivery-only customers (16,938 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
Albany, NYAllegany, NYCattaraugus, NYCayuga, NYChautauqua, NYChenango, NYClinton, NYColumbia, NYCortland, NYErie, NYEssex, NYFranklin, NYFulton, NYGenesee, NYHamilton, NYHerkimer, NYJefferson, NYLewis, NYLivingston, NYMadison, NYMonroe, NYMontgomery, NYNiagara, NYOneida, NYOnondaga, NYOntario, NYOrleans, NYOswego, NYOtsego, NYRensselaer, NYSaratoga, NYSchenectady, NYSchoharie, NYSt Lawrence, NYWarren, NYWashington, NYWyoming, NY
Other large utilities in New York
- Consolidated Edison Co-NY Inc - 3,249,017 customers, residential 36.74¢
- Long Island Power Authority - 1,165,257 customers, residential 26.17¢
- New York State Elec & Gas Corp - 840,507 customers, residential 22.59¢
- Rochester Gas & Electric Corp - 325,771 customers, residential 22.01¢
- Central Hudson Gas & Elec Corp - 287,197 customers, residential 27.67¢
- Orange & Rockland Utils Inc - 218,371 customers, residential 26.21¢
- MPower Energy LLC - 31,537 customers, residential 19.43¢
- Family Energy, Inc. New York - 21,375 customers, residential 11.97¢
All New York utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #13573 in the EIA frame.