Long Island Power Authority
State electric utility · New York · #34 of 3,199 U.S. utilities by customers · EIA utility #11171
Long Island Power Authority is a state electric utility serving 1,165,257 customers in New York. In 2025 it sold 17,828 gigawatt-hours of electricity for $4.39B in revenue, an average realized rate of 24.60¢ per kWh across all customer classes and 26.17¢ per kWh for residential customers. Its reported service territory covers 3 counties. EIA records its activities as: generation, transmission, buying transmission, distribution, wholesale marketing, retail marketing.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 1,032,471 | 9,219 | $2.41B | 26.17¢ | |
| Commercial | 132,785 | 8,294 | $1.92B | 23.17¢ | |
| Transportation | 1 | 315 | $51.55M | 16.36¢ | |
| Total | 1,165,257 | 17,828 | $4.39B | 24.60¢ |
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 (744 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 1,147,056 | 18,292 | $3.86B | 22.07¢ |
| 2022 | 1,151,176 | 18,274 | $4.35B | 25.22¢ |
| 2023 | 1,154,795 | 17,476 | $3.67B | 22.33¢ |
| 2024 | 1,161,164 | 17,818 | $4.09B | 24.57¢ |
| 2025 | 1,165,257 | 17,828 | $4.39B | 26.17¢ |
Reliability (2025)
Average outage time (SAIDI): 68 minutes per customer per year
Average outages (SAIFI): 0.79 per customer
Average restoration time (CAIDI): 86 minutes
As reported for New York under the Other standard, with major event days included where the standard reports them. Lower is better; see the reliability rankings.
Energy supply (2025)
Net generation: 1,998 GWh
Wholesale power purchased: 16,902 GWh
Winter peak demand: 3,178 MW
Energy losses: 5.6% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 98.4% of 1,166,172 meters
Customer-sited generation (net metering): 98,004 installations, 867.2 MW of capacity
This utility also reported 914 delivery-only customers (669 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
Nassau, NYQueens, NYSuffolk, NY
Other large utilities in New York
- Consolidated Edison Co-NY Inc - 3,249,017 customers, residential 36.74¢
- Niagara Mohawk Power Corp. - 1,582,394 customers, residential 19.89¢
- 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 #11171 in the EIA frame.