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Henrico County Dominion Installer core area

Solar panels in Sandston, Virginia: 1,384 kWh per kW per year

A south-facing kilowatt of panels in Sandston makes about 1,384 kWh a year, 1.3% above the Virginia median. Power here comes from Dominion Energy at 15.20¢ per kWh (2025 average).

1,384

kWh / kW / year

PVWatts, south-facing

5.06

Peak sun hours / day

annual average irradiance

11,072

kWh / yr from 8 kW

a common home system

15.20¢

Dominion price

2025 residential avg

Monthly solar production per kW in Sandston, VirginiaKilowatt-hours per month for a 1 kW south-facing system. Peak in Jun, low in Dec.050100150Jan89Feb97Mar115Apr130May135Jun141Jul134Aug138Sep107Oct116Nov98Dec83
NREL PVWatts v8, 1 kW DC, fixed roof mount, azimuth 180°, tilt 25°, 14% losses. Jun makes about 1.7× Dec.

Seasonality

Monthly solar production in Sandston

Virginia net metering carries excess credits forward for 12 months, so Jun's surplus offsets Dec's shortfall. Systems are sized to annual usage rather than to the lowest month. How the calculator models net metering; the current rules by utility are on this Virginia incentives page, maintained by the installer behind this site.

Capacity factor: 15.8%. Elevation about 47 m. Compare every town on the city list, or see how roof direction, tilt and shade change the number.

Payback in Sandston

Solar cost and payback for an average home in Sandston

Assumes 1,038 kWh a month (≈ $158) at Dominion Energy's 2025 average price, Sandston's PVWatts production, 3% annual rate growth and $2.78/W installed, no federal credit. Dollars are nominal. Change any of it in the calculator, or compare every utility in Are solar panels worth it in Virginia?

Run it with your bill

9.0 kW

System size

$25,020

Est. cost

$2,073

Year-1 savings

11.0 yrs

Break-even

$61,949

25-yr savings

$36,929

Net benefit

undiscounted

Utility

Electric utilities serving Henrico County

UtilityTypeAvg price ¢/kWhAvg kWh / monthData year
Dominion EnergyInvestor-owned utility15.201,0382025*

Questions

Questions about solar in Sandston

How much electricity does a solar system produce in Sandston?
About 1,384 kWh per year for every kilowatt of panels on a south-facing roof, according to NREL's PVWatts. An 8 kW system would make roughly 11,072 kWh a year. East- or west-facing roofs make less; the calculator applies those factors.
Who is the electric utility in Sandston?
Dominion Energy serves Sandston, per EIA's service-territory data. Dominion's 2025 average residential price was 15.20¢ per kWh.
Is solar worth it in Sandston?
For an average Dominion home (1,038 kWh a month), the default assumptions give a 9.0 kW system costing about $25,020 with a break-even around 11.0 years and $36,929 net benefit (nominal) over 25 years. Your bill, roof and shade change that; the calculator lets you enter them. The statewide picture is in “Is solar worth it in Virginia?”.
Where does the sun data come from?
NREL PVWatts v8 (8.5.0), using the 1136791.csv typical-year weather dataset for grid cell 1136791, about 2 km from the town center. Inputs: 1 kW DC, fixed roof mount, 180° azimuth, 25° tilt, 14% system losses. Typical-year data doesn't change year to year.

Solar production in towns near Sandston

Sources: NREL PVWatts v8 (8.5.0, typical-year weather); EIA Form 861 2025 utility data and service territories; U.S. Census Bureau place coordinates. Formulas and assumptions on the methodology page.