Free · built on public government data

Put your solar where the sun actually is.

Type your address and see exactly where on your land the panels produce most — accounting for your trees, terrain, and buildings. Winter-weighted, because December is when off-grid lives or dies.

Interactive shading map · sign in to try it on your address

Every other free tool misses the point

Roof-only calculators ignore rural ground-mount. Pro shade tools cost installer money. None answer the real question: I have some acres and some trees — where exactly do I put the array?

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Real tree shade

We pull measured canopy heights from national LIDAR and satellite data — then ray-trace the shadow across your parcel, including the neighbor's trees.

❄️

Winter-weighted

Off-grid and battery-backed systems live on December production. We weight the low winter sun by default — the thing annual-average tools hide.

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Species-aware

Bare winter oaks pass ~40% of light; pines block nearly all. We model leaf-off transmittance — an effect nobody else touches.

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Honest numbers

Where we estimate, we say so. Measured heights are labeled measured; guesses are labeled guesses. Never a fantasy figure.

Four steps to your best spot

One screen, one answer.

Enter your address

Real aerial imagery of your property loads instantly.

Load your trees

Measured canopy drops onto the map — correct any with the slider.

Place the array

Drop panels anywhere and get a suitability score plus a shade map.

Find the optimum

We scan your parcel and mark the highest-output spot — and what's limiting it.

Pricing

The siting tool is genuinely free. Precise, weather-calibrated production is the paid tier.

Free
$0
Everything you need to place panels.
  • Address + aerial map
  • Measured tree shade analysis
  • Winter-weighted best-spot finder
  • What-if tree clearing
Pro · coming soon
TBD
Bankable production numbers.
  • Real weather & irradiance data
  • Multi-plane roof modeling
  • Calibrate to your actual meter
  • Monthly production forecasts