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Potomac Electric Power Co
Potomac Electric Power Co served 531,090 residential customers in Maryland in 2025 (21.5% of the state's residential customers), the 2nd largest of 59 utilities reporting there. Bundled service; ownership: investor owned; balancing authority PJM.
The meter, one average month.
Scroll to run 30 days of Potomac Electric Power Co's average residential use through a five-dial register.
- Used so far
- 835 kWh
- At 21.74¢/kWh
- $182
Price ruler0 to 50¢ per kWh
Where 21.74¢ sits.
Potomac Electric Power Co averaged 21.74¢ per kWh against a Maryland residential average of 19.48¢: 11.6% above the state figure. Among the 4 investor owned utilities in Maryland with bundled residential sales, it ranks 3rd from the lowest price.
2020 and 2025EIA-861
Five years, same meter.
In 2020 the average Potomac Electric Power Co home used 870 kWh a month at 14.61¢ and paid $127. In 2025 it used 835 kWh at 21.74¢ and paid $182: the price per kWh is up 48.8%.
| Measure | 2020 | 2025 |
|---|---|---|
| Price, ¢/kWh | 14.61 | 21.74 |
| Use, kWh a month | 870 | 835 |
| Bill, US$ a month | 127.17 | 181.58 |
| Class | Customers | MWh sold | ¢/kWh |
|---|---|---|---|
| Residential | 531,090 | 5,322,637 | 21.74 |
| Commercial | 31,308 | 1,518,214 | 16.49 |
| Industrial | 1 | 1,668 | 19.46 |
Who else is on the line
Homes are one class.
Homes took 77.8% of the electricity Potomac Electric Power Co sold in Maryland in 2025.
Rooftop solar on its linesnet metering
39,736 roofs.
- Residential net-metered PV
- 39,736installations reported for 2025
- Capacity
- 329.4 MWresidential, net metered
- Per 1,000 homes
- 74.8installations per 1,000 residential customers
Service territoryEIA-861
2 counties.
MontgomeryPrince Georges
Counties in Maryland where Potomac Electric Power Co reported serving customers in 2025 (2 in all; up to 24 listed).
EIA-8612025Utility 15270
The filing, line by line.
| Measure | Value | Unit |
|---|---|---|
| Average price | 21.74 | ¢/kWh |
| Maryland average price | 19.48 | ¢/kWh |
| Difference from state average | 11.6 | % |
| Price change over 5 years | 48.8 | % |
| Typical monthly use | 835 | kWh |
| Typical monthly bill | 181.58 | US$ |
| Residential customers | 531,090 | accounts |
| Share of MD residential customers | 21.5 | % |
| Size rank in MD | 2 of 59 | by customers |
| Price rank, investor owned peers | 3 of 4 | 1 = lowest |
Rate plans on fileOpenEI URDB
2 active plans.
- Time-of-use
- 0more than one energy period within a month
- Seasonal only
- 1price changes by month, not by hour
- Median fixed charge
- $9.55US dollars per month
- Median flat energy rate
- 5.62¢cents per kWh, one period and one tier
Active residential plans: not ended, started within the last 5 years, latest version of each plan name. Time-of-use means more than one energy period within a single month; plans whose price changes only by season are counted as seasonal.