DC Solar Savings + SREC Calculator
Enter your monthly Pepco bill. See your estimated solar savings, 10-year SREC income, and federal tax credit. Built specifically for DC homeowners — DC has the highest-value SRECs in the country.
Your bill
Use your average monthly Pepco bill. We'll do the rest.
DC average is around $180–$220. If you're not sure, use a recent summer-month bill.
Adjust assumptions (optional)
Defaults reflect 2025 DC reality: Pepco residential ~$0.16/kWh, DC SRECs trading around $350–$450, Pepco rates up ~3% annually over the last decade.
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These are estimates based on DC averages. The 30-second roof check uses your real address, your real bill, and satellite imagery to give you exact production and payback numbers.
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How these numbers are calculated
System size = (your bill × 12) ÷ Pepco rate ÷ 1,250 kWh-per-kW-year (DC solar production factor).
SREC income = annual production (kWh) ÷ 1,000 × SREC price. DC SRECs are limited to the first 10 years of production under SREC II rules.
Monthly savings (PPA) = ~30% of your current bill on day one. Power Purchase Agreements eliminate upfront cost in exchange for a fixed solar rate below Pepco's retail rate.
25-year electricity savings uses a compounding rate increase (default 3%/yr) applied to your bill, reflecting Pepco's historical pattern.
Federal tax credit applies only if you purchase outright (cash or loan), not PPA. The Residential Clean Energy Credit is 30% of system cost through 2032.
Estimates only. Actual production depends on roof orientation, shading, and tilt. Real numbers come from a free roof check at /survey.