Calculate
Every tool below runs in your browser with location-specific data — no email, no sales call. Start with savings and cost, then dig into the piece you care about.
Monthly, annual and 25-year savings, plus payback period, for your bill and state.
Estimate my savings → 💲System size, installed price, incentives, production, savings and payback for your address.
Estimate my cost → ⏱️How many years until solar pays for itself, plus 25-year return and lifetime savings.
See my payback → 📐How many panels and what system size (kW) covers your bill, and whether it fits your roof.
Size my system → 🔋Pick the loads you want to back up and how long — get capacity, unit count and cost.
Size my battery → ⚖️25-year cost of staying with the utility vs buying or financing solar, with the breakeven year.
Compare the paths → 🏦Monthly payment, total interest, and how a loan compares to paying cash.
Run the numbers → 🚗How much extra solar it takes to charge an electric car — and what you save vs. gas.
Charge on sunshine → 🧾What the 25D residential credit is worth — and why a 2026 install no longer qualifies.
Check eligibility → 🔍Paste the numbers from a quote you've received and we'll flag anything that looks off.
Check my quote →Get up to 5 competing quotes from vetted installers in your area — free and no obligation.