Solar Panels in Golden Triangle, DC: Cost, Payback & Savings

A typical 6.0 kW home solar system in Golden Triangle costs about $21,600 and pays for itself in about 9.8 years, saving roughly $43,034 over 25 years at District of Columbia's average electricity price of 24.7¢/kWh.

Strong investmentpayback 9.8 years

System size

6.0 kW

15 × 400 W panels

Upfront cost

$21,600

at US median $3.60/W

First-year savings

$2,021

about $168/month

25-year net savings

$43,034

after paying for the system

Production

8,196 kWh/yr

107% of a typical home's use

Peak sun hours

4.8/day

1,366 kWh per kW per year

Monthly solar production in Golden Triangle

Estimated output of a 6.0 kW south-facing roof system. Jul is the strongest month (860 kWh); Dec the weakest (449 kWh).

Solar production (kWh) Typical home use, 639 kWh/month

Solar payback calculator for Golden Triangle

Pre-filled with Golden Triangle's sunshine and District of Columbia's average electricity price. Enter your own bill and an installer's price per watt to see your payback.

Leave export credit blank where the utility offers full net metering. Where exports earn less, solar used at home as it's produced is worth the full price and the rest earns the export credit.

System

Cost

Year-1 savings

Payback

25-yr net savings

How Golden Triangle compares

Each kW of panels here produces about 1,366 kWh a year — about the same as the District of Columbia median and about the same as the US median city (1,371 kWh).
Payback ranks #34 of 35 District of Columbia places we cover.
Sunshine varies little across a state; electricity price, installed cost and how utilities credit exported power drive most of the difference between states.

Net metering, tax credits and incentives in 2026

District of Columbia offers net metering: power you send to the grid is credited at or near the retail price, so every solar kWh is valued at 24.7¢ here.

There is no federal tax credit for buying home solar installed in 2026. The 30% Residential Clean Energy Credit (Section 25D) ended for systems placed in service after December 31, 2025, so the costs and paybacks on this page include no federal credit.

District of Columbia and local utilities may still offer rebates, performance payments, property-tax or sales-tax exemptions. Search the DSIRE incentives database for District of Columbia and ask installers which programs they apply for you.

Frequently asked questions

Is solar worth it in Golden Triangle, DC?

For a typical home, a solar system pays for itself in about 9.8 years and then keeps saving money. Over 25 years the estimated net savings are $43,034. Verdict: strong investment. Your own payback depends on your roof, your bill and the quotes you get.

How many solar panels do I need in Golden Triangle, DC?

A home using 639 kWh a month (the District of Columbia average) needs about 15 panels of 400 W — a 6.0 kW system — to cover its annual use. Divide your own yearly kWh by 1,366 to get the kW you need.

How much do solar panels cost in Golden Triangle, DC?

At 3.60 dollars per watt, a 6.0 kW system costs about $21,600 before any state or utility incentives. There is no federal tax credit for systems installed in 2026.

How much sun does Golden Triangle get?

Golden Triangle averages 4.8 peak sun hours per day, so each kilowatt of panels produces about 1,366 kWh a year.

Does District of Columbia have net metering?

Yes. Power sent back to the grid is credited at or near the retail price (24.7¢ per kWh on average).

How much does electricity cost in District of Columbia?

Residential electricity in District of Columbia averages 24.7¢ per kWh, and a typical home uses 639 kWh a month (EIA).