Solar in Gaithersburg, MD
With Pepco's electricity at about 23.5¢ per kWh and 1,374 kWh of sun per kW, solar is worth it for a typical Gaithersburg home today: about a 8.2-year payback.
- Payback, typical home
- 8.2 yrsMaryland: 8.9 yrs
- 25-year net
- $59,666after paying $21,385
- Sun
- 1,374kWh per kW per year
- Electricity
- 23.5¢31% above U.S. average
A typical Gaithersburg home, by the numbers
| Utility | Pepco |
|---|---|
| Electricity use | 833 kWh a month |
| Best-value system | 7.3 kW, about 17 panels, 10,031 kWh a year (100% of use) |
| Cost | $21,385 |
| First-year savings | $2,256 |
| Payback | 8.2 years |
| Exported power | Full retail net metering (Pepco) |
Cash purchase, no federal credit, 3.5% yearly rate increases. Run it with your own numbers.
Homes in Gaithersburg
- Owner-occupied homes
- 51%
- Single-family detached
- 19%
- Median home value
- $497k
- Median year built
- 1989
- Population
- 69,825
- Roofs suitable for solar†
- 85%
Census ACS 2020–2024. †Share of 9,129 buildings Google Project Sunroof rated technically suitable (2019 snapshot).
Installers working in Gaithersburg
Public installation records for Maryland don't name installers, so we can't rank local companies here. Browse installers in Maryland.
Always verify the license and get at least three quotes. Compare quotes side by side.
Questions about solar in Gaithersburg
Is solar worth it in Gaithersburg, MD?
For a typical home in Gaithersburg, solar is worth it at 2026 prices: a 7.3 kW system costs about $21,385 after state incentives, saves about $2,256 in year one and pays back in about 8.2 years. Enter your address for an estimate based on your roof and bill.
How much solar power does a system produce in Gaithersburg?
About 1,374 kWh per year for each kW of panels on a south-facing roof, based on PVWatts and local weather. That's 0% less than the Maryland average. East- or west-facing roofs produce roughly 10–20% less.
Who is the electric utility in Gaithersburg?
Most homes in Gaithersburg are served by Pepco, at about 23.5¢ per kWh on average. Some areas are served by BGE, The Potomac Edison.
How much do solar panels cost in Gaithersburg?
A fair cash price is around $2.95 per watt before incentives, so about $21,385 for a 7.3 kW system. There's no federal tax credit for homeowners who buy in 2026.
Nearby
- Montgomery Village 11.6 yrs
- Germantown 11.5 yrs
- Rockville 8.2 yrs
- Clarksburg 11.5 yrs
- Olney 8.1 yrs
- Aspen Hill 8.1 yrs
- North Bethesda 8.1 yrs
- Potomac 8.2 yrs
- All of Maryland
Data: PVWatts (National Laboratory of the Rockies), EIA-861 2025 adjusted to 2026, U.S. Census ACS, LBNL Tracking the Sun, state policy research as of October 2026.