SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/solar-shade-seasons

Why should you check a roof's shading at different times of year before going solar?

The sun's path changes, so shade shifts from summer to winter.

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  1. Panels only produce power in summer
  2. Utilities require a seasonal shade report
  3. Shade patterns shift as the sun's path changes with the seasons ✔

Why: DOE's consumer guide says shading in an area can change from summer to winter because the sun's path changes. Trees, chimneys, nearby buildings and vents can all shade panels and cut output.

Huh, didn't know that: DOE says to consult a solar pro who uses software to estimate site shading.

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I don't trust those trees. They look a little shady.
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References

Answer: Shade patterns shift as the sun's path changes with the seasons. DOE's consumer guide says shading in an area can change from summer to winter because the sun's path changes. Trees, chimneys, nearby buildings and vents can all shade panels and cut output.

  1. DOE EERE: A Consumer Guide to Solar Electricity for the Home (Own Your Power!) www1.eere.energy.gov/solar//pdfs/43844.pdf
    shading in an area can change from summer to winter because the sun's path changes
    Checked 2026-10-10.

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