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Urban Solar Shading: Rooftop PV Yield Simulator

Interactive 2D solar-shading simulator: adjust a neighboring building's height and distance, sweep time of day and season, and watch a real sun-elevation model cast a shadow across a rooftop PV panel and cut its daily energy yield.

Energy & Thermodynamics2DModerate60 FPS📱 Mobile-adapted⇄ 3D version

Rooftop solar panels don't just depend on how much sun is out — in a real city they depend on what's standing next to them. This 2D side-view simulator places one rooftop PV panel next to a taller neighboring building, tracks the sun across a real seasonal solar-position model, and computes the neighbor's exact geometric shadow length every frame to determine whether it reaches the panel. Watch the live daily-yield curve develop a shadow-caused dip in the afternoon, and see how raising the neighbor's height or narrowing the street widens that dip and cuts total daily energy.

⚙ Under the hood

Adjust building heights and separation to see how shadows affect rooftop PV panel output in real-time.

solar energyphotovoltaicurban planningshadingrenewable citiessmart grid

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install