Home▸Energy & Thermodynamics▸Duck Curve Simulator — Solar Curtailment & Evening Ramp

Duck Curve Simulator

Interactive duck-curve simulator: raise installed solar capacity and watch net grid demand sink into a midday belly, curtailed solar pile up, and the evening ramp steepen — then toggle battery storage to flatten both.

Energy & Thermodynamics2DModerate60 FPS

As a grid adds more solar capacity, midday net demand — total demand minus solar output — sinks toward zero or below, forcing operators to curtail excess solar with nowhere useful to go, while the same growing solar capacity means output collapses almost to nothing right as the evening peak is rising, creating an increasingly steep ramp that conventional generators must match in just a few hours. Slide installed solar capacity to watch the curve sink into the "duck" shape, then toggle battery storage to see how storing midday excess and discharging it in the evening flattens both the curtailment and the ramp.

⚙ Under the hood

Raise installed solar capacity and watch net grid demand sink into a midday belly with curtailed solar, then rocket up an increasingly steep evening ramp — toggle battery storage to flatten both.

duck curvesolar curtailmentgrid demandrenewable energybattery storageenergy transition

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