What this means for a District of Columbia household
Over the last 12 months the average price was 24.20¢ per kWh and the average home used 630 kWh a month, so a typical District of Columbia household spent about $152 a month on electricity, or $1,830 a year. Use is 28% below the US average of 870 kWh a month, peaking in July at 827 kWh.
Driving a Tesla Model Y Long Range AWD 1,000 miles a month takes 275 kWh from the wall (EPA 27.5 kWh/100 mi), about $67 at the state average. A 25.5 mpg gasoline car covering the same distance at $4.09 a gallon (Central Atlantic (PADD 1B) average, August 2026) costs about $160.
The state average hides the real spread. Utilities in the same state charge different prices, and on a time-of-use plan the same kWh costs more in the peak hours than off-peak; each utility page shows by how much. Open Pepco’s page to see its periods and fixed charge, or run the calculators below with District of Columbia preloaded.
Natural gas for homes averaged $1.71 per therm over the 12 months to June 2026 (EIA, all charges included), and a typical gas-heated home uses about 608 therms a year for heating. The heat pump calculator compares that with electric heating on your plan.
A south-facing, 20° rooftop array in District of Columbia produces about 1,404 kWh per installed kW a year (NREL PVWatts at the state’s population centre). What that is worth depends on your utility’s export rule, shown on each utility’s page.