In short: Martinsburg has about 19,000 people and sits in Berkeley County. The Potomac Edison Company serves the county, averaging 12.59¢ per kWh for homes in 2024 (EIA). FEMA rates Berkeley County strong winds “relatively high”. Rooftop solar here makes roughly 1,160 kWh a year per kW of panels by our estimate, which is about average for the U.S..
This page covers what is local to Martinsburg: its utility, outage records, sunshine, weather risks and charging. Statewide rules such as net metering, incentives and electrician licensing are in our West Virginia energy guide.
Martinsburg at a glance
- Place: Martinsburg, Berkeley County, West Virginia; about 19,047 residents (Census Bureau estimate, July 2024).
- Utility: The Potomac Edison Company (investor-owned). Homes paid an average 12.59¢ per kWh in 2024 (EIA-861); the average customer lost 253 minutes of power on normal days, with 1.5 interruptions a year (utility-wide, not just Martinsburg).
- Sun: 3.98 kWh per square meter per day on average, from 1.72 in December to 6.07 in June (NASA POWER). Our rough estimate: about 1,160 kWh a year per kW of panels.
- Climate: about 1,110 cooling degree-days and 5,310 heating degree-days a year (base 65°F, NASA POWER), so heating and cooling both matter.
- Top hazards in Berkeley County: strong winds “relatively high”, river and heavy-rain flooding “relatively moderate” and winter weather “relatively moderate” (FEMA National Risk Index; overall county risk rated “relatively low”).
- Public charging: 23 ports at 4 locations in Martinsburg, 22 of them DC fast (AFDC, October 20, 2026).
Your utility and what it means
The Potomac Edison Company is an investor-owned utility and served about 135,266 home customers in 2024; its 12.59¢ average was below the 15.78¢ statewide average for July 2026. Those are utility-wide averages, not a quote for your address; your own bill is the real number.
For reliability, The Potomac Edison Company reported 253 minutes per customer without major storms in 2024, less than the statewide figure of 486 (EIA-861). Utility-wide numbers hide a lot: a home at the end of a long rural line usually has more outages than the average.
Net metering, export rates and incentives are set at state level and by each utility. Start with the West Virginia guide and then ask your utility for its current interconnection steps before you sign anything.
Backup power in Martinsburg
- Strong winds (relatively high): High winds knock out lines on ordinary days. A battery or portable power station handles the common short outages; add a generator for multi-day repairs.
- River and heavy-rain flooding (relatively moderate): Heavy rain can flood basements and take out power. Put sump pumps on backup power and keep equipment above the flood line.
- Short outages: a portable power station covers phones, Wi-Fi, a CPAP and lights; a home battery switches over automatically.
Size your setup with the generator sizing tool and the battery backup calculator, and compare options in backup power. Generator safety (CPSC): outdoors only, at least 20 feet from the house, exhaust away from doors and windows, never in a garage, and battery-powered carbon monoxide alarms inside. A licensed electrician should install any transfer switch, with a permit; see generator installation.
Solar in Martinsburg
By our rough estimate each kW of panels makes about 1,160 kWh a year in Martinsburg (NASA sunshine data times 365 days times 0.80 for system losses). Valued at The Potomac Edison Company’s 2024 average of 12.59¢, that is about $146 a year per kW if all of it offsets your own use (an estimate, not a promise). Production swings with the seasons: June is the sunniest month at 6.07 and December the dimmest at 1.72, a 3.5-to-1 gap, so a battery or a bigger system helps in winter.
Check your own roof with the solar potential tool, see solar costs and net metering vs net billing, and read the steps in solar installation. Hail and storm exposure are worth raising with installers and your insurer.
Batteries and EV charging
A home battery earns its place when outages are frequent, when your utility pays little for exported solar, or when evening prices are high; compare in home batteries and battery costs. Martinsburg has 23 public charging ports in the federal station list including 22 DC fast, but home charging is cheaper and easier: see the EV charging cost calculator and EV charger installation.
Drive on another fuel? See every alternative fuel station in Martinsburg: hydrogen, propane, natural gas, E85 ethanol, biodiesel and renewable diesel.
Permits and inspections
Solar, generator transfer switches and EV chargers normally need an electrical permit from the Martinsburg building or permitting department, or from Berkeley County if you live outside city limits, and often a utility interconnection approval. We have not verified a local permit page for Martinsburg, so check the city and county websites or ask your electrician, who will know the process. Hire only a licensed electrician or installer; the West Virginia guide lists the state licensing rules.
Nearby guides
More local guides: see all of West Virginia, or the whole West Virginia energy guide.
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Martinsburg energy FAQ
Who is my electric company in Martinsburg?
Federal data lists The Potomac Edison Company as the main utility serving Berkeley County. Small areas can be served by a different company or a co-op, so confirm on your bill.
How much power will solar make in Martinsburg?
About 1,160 kWh a year per kW of panels by our estimate, so a 6 kW system would make roughly 6,960 kWh. Shade, roof direction and tilt change this; run your address through the solar potential tool for a better number.
Is a generator or a battery better for strong winds in Berkeley County?
It depends how long the outage lasts. A battery is quiet, automatic and good for short outages and for pairing with solar; a standby generator keeps going as long as it has fuel, which suits multi-day events. Many homes use a battery for everyday outages and add a generator for the rare long one.
Do I need a permit for solar or a generator in Martinsburg?
Almost always an electrical permit for a transfer switch, solar or an EV charger, issued by the city or county where you live. Your licensed electrician or installer normally pulls it. Never connect a generator to your house wiring without a transfer switch.
Sources: EIA Form 861 (2024) for utility prices and outages; NASA POWER climatology (2001 to 2025) for sun and degree-days; FEMA National Risk Index for county hazards; AFDC station locator for public charging; Census Bureau for population. Estimates are ours and are not promises; see our editorial policy. Prices and programs change, so check each program page.