SunTrace3D
Check any roof for solar with 3D shadow analysis
SunTrace3D launched on March 31, 2026.
What it does
Traditional solar analysis requires expensive software or waiting days for a surveyor's report. SunTrace3D fixes that by letting you type any address on Earth to instantly generate a photorealistic 3D model right in your browser. Watch real-time shadows, place virtual panels, and get energy yields based on official satellite data.
Free 3D solar analysis tool. Check if solar works on your roof — simulate shadows for any building, place virtual panels, and get instant energy yield and savings estimates. Works for any address worldwide.
Understand sunlight on any building — for solar analysis, planning compliance, real estate, photography, and agriculture. Explore photorealistic 3D models, simulate shadows year-round, and get data-backed insights. Backed by European Commission satellite irradiance data — generous free tier, no installation required. Watch shadows sweep across buildings for any hour of any day. Scrub through 24 hours or animate an entire year to find the sunniest spots on your roof. Click to place individual panels or drag to create arrays on any rooftop or facade. Per-panel shading analysis shows exactly which panels get blocked and when. Explore any address on Earth with photorealistic 3D city models —…from suntrace3d.com
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Shadowmap2021 · app.shadowmap.org · ▲292Interactive 3D maps app to visualize solar shadows worldwide
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My solar died for 6 months, so I built a watchdogAug 2026 · sunranker.com · ▲15Hi HN, Shawn here. My rooftop system lost about half a year of production and nobody told me. Not the installer, not the monitoring app, not the utility. I found out from an electric bill that made no sense, then spent weeks digging through the monitoring portal by hand. SunRanker is what I wished existed that day. Connect a system once (Enphase OAuth, or a SolarEdge site ID plus API key) and it reads production daily, shows it in plain language, and emails you when something actually changes. Three alerts only. The connection broke, the monitoring went quiet, or output has been well below…
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