How Much Solar Do I Need?
Answer 4 quick questions for your recommended system size and cost — free and instant.
Your Solar System Recommendation
Based on your energy usage, location, and roof details
Your Panels on the Roof
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Avg. peak sun hours/day in your area
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Estimated Bill Coverage
Roof Space Limits Your System
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You're all set!
A local solar installer will reach out within 24 hours with exact pricing based on your system size — no obligation.
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How We Calculate Your Solar System Size
Our sizing calculator uses your monthly electricity consumption (from your bill or kWh usage), local peak sun hours based on your zip code, your roof's available square footage, and roof orientation to recommend the right system size. We estimate the number of 400-watt panels needed, check whether they fit your roof, and calculate the approximate cost at the national average of $3.00 per watt installed. These are estimates — actual system design depends on your specific roof, shading, and installer pricing.