Questions answered: Home solar
Do solar panels work on cloudy days and in winter?
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| State (city modeled) | January | June | Whole year |
|---|---|---|---|
| Michigan (Detroit) | 57 kWh | 138 kWh | 1,205 kWh |
| Washington (Seattle) | 41 kWh | 142 kWh | 1,158 kWh |
| Ohio (Columbus) | 62 kWh | 133 kWh | 1,261 kWh |
| Florida (Jacksonville) | 103 kWh | 126 kWh | 1,441 kWh |
| Arizona (Phoenix) | 119 kWh | 171 kWh | 1,794 kWh |
Because output swings this much by season, solar calculators and installers size a system on its yearly total.
Run your own numbers: Monthly output for your state
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Solar panel calculatorSize a system and see payback for your state.Estimates only. Your actual costs depend on your utility's rate plan, how and when you charge or use power, and local prices. This is general information, not financial, tax or legal advice. See our disclaimer.