Duquesne Light Co
Investor Owned electric utility · Pennsylvania · #83 of 3,199 U.S. utilities by customers · EIA utility #5487
Duquesne Light Co is a investor owned electric utility serving 476,364 customers in Pennsylvania. In 2025 it sold 4,237 gigawatt-hours of electricity for $925.00M in revenue, an average realized rate of 21.83¢ per kWh across all customer classes and 23.47¢ per kWh for residential customers. Its reported service territory covers 3 counties. EIA records its activities as: transmission, distribution, retail marketing.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 437,551 | 3,206 | $752.56M | 23.47¢ | |
| Commercial | 38,516 | 965 | $163.39M | 16.93¢ | |
| Industrial | 297 | 65.7 | $9.05M | 13.76¢ | |
| Total | 476,364 | 4,237 | $925.00M | 21.83¢ |
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 (611 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 456,380 | 4,388 | $650.81M | 16.21¢ |
| 2022 | 473,887 | 4,481 | $795.02M | 18.70¢ |
| 2023 | 472,669 | 3,999 | $830.37M | 22.07¢ |
| 2024 | 473,018 | 4,215 | $852.98M | 21.74¢ |
| 2025 | 476,364 | 4,237 | $925.00M | 23.47¢ |
Reliability (2025)
Average outage time (SAIDI): 856 minutes per customer per year
Average outages (SAIFI): 1.27 per customer
Average restoration time (CAIDI): 674 minutes
As reported for Pennsylvania 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: — GWh
Wholesale power purchased: 4,646 GWh
Winter peak demand: 2,059 MW
Energy losses: 8.4% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 100.0% of 612,011 meters
Customer-sited generation (net metering): 11,462 installations, 115.9 MW of capacity
This utility also reported 140,144 delivery-only customers (7,963 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
Allegheny, PABeaver, PAWestmoreland, PA
Other large utilities in Pennsylvania
- FirstEnergy Pennsylvania Electric Co - 1,646,917 customers, residential 18.76¢
- PECO Energy Co - 1,326,554 customers, residential 18.02¢
- PPL Electric Utilities Corp - 934,737 customers, residential 18.60¢
- Reliant Energy Northeast LLC - 547,853 customers, residential 12.91¢
- CleanChoice Energy, Inc. - 215,303 customers, residential 16.37¢
- SmartEnergy Holdings, LLC - 199,336 customers, residential 15.49¢
- Inspire Energy Holdings, LLC - 191,325 customers, residential 15.63¢
- American Power & Gas - 124,030 customers, residential 12.57¢
All Pennsylvania utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #5487 in the EIA frame.