Calculate Your Solar Savings
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Sun Hours
Electricity Rate
Fuel Savings
Free Solar Calculator. Real Numbers.
No Pressure.
Use our free calculators to get accurate savings estimates in under 30 seconds — no signup, no spam, no sponsored results.
Instant Results
Solar, battery, or EV — 30-second estimates based on your location, electricity rate, and usage. No email required.
Location-Based Accuracy
Local electricity rates, sun hours, and net-metering rules — not national averages.
100% Unbiased
Independent tools and guides — no sales pressure, no hidden agendas.
"The best part was never the number on the calculator. It's the first hot summer you don't flinch when the power bill lands — because the roof already took care of it. The sun doesn't send invoices, and it doesn't raise its rates."
Daniel Arendt — Founder, SolarCalcProInstallations
Value Added
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Free Solar Calculator FAQ
Yes. All three calculators are free to use, as often as you like — no account, no signup, no trial. The site stays free through clearly marked partner links and optional services you can choose to use. Nothing you enter is ever required to see your results.
More accurate than the national-average calculators you'll find elsewhere. We use your ZIP code's actual electricity rate, local sun hours, and your state's net-metering rules — not one blended U.S. number. A final installer quote can still shift a little once someone looks at your roof condition and shading, but you'll be starting from a realistic figure, not a marketing one.
All three work the same way and run on the same calculation engine. You enter a couple of basics — your ZIP code and monthly bill for solar, your household usage for battery sizing, your car and driving habits for EV. We combine that with your local rate, sun hours, and net-metering rules and show you the full math: what it costs, what it saves, and how long it takes to pay off.
Your complete results — system size, upfront cost, annual savings, and payback period — which you can download as a PDF and take to any installer you like. No email address required.
No — the federal residential solar tax credit (Section 25D) expired for systems placed in service after December 31, 2025, under the One Big Beautiful Bill Act. It is no longer available for new installations. See our Solar Incentives guide for current state-level incentives.
Start with our guides: Solar Basics, Battery Basics, or EV Basics. Then look up your own state on Solar Panels by State to see what actually applies where you live.
Built for homeowners,
not salespeople.
SolarCalcPro is a free resource built to help American homeowners understand the real financial impact of solar energy, battery storage, and electric vehicles — before talking to a single salesperson.
We built the calculators we wished existed: straightforward tools that give you honest numbers based on real data. Your results are yours — download them as a PDF, no email required, and take them wherever you want.
Everything here is independently written and regularly updated. No partner, installer, or manufacturer can change a single number our calculators show you. If you ever want quotes from installers, that's a choice you make — never something that happens quietly in the background.
Want to know more? Read About SolarCalcPro →
Figures sourced from U.S. EIA, NLR (formerly NREL), and SEIA. Last updated July 2026. Estimates are illustrative averages — use the calculators above for personalized results.