What is the Solar & Wind Site multi-solver?

Solar & Wind Site is a guided workflow that chains 2 individual PolySim solvers into one end-to-end analysis, piping each result into the next step.

Yes. Every step runs entirely in your browser using real numerics — no install, no account, no cloud cost. Custom or private solver packs are available as a paid service.

Earth & First Responders Pack · Multi-Solver

Solar & Wind Site

Yield & capacity. This multi-solver chains 2 solvers into a single guided workflow — run each step in order and carry the result forward.

Workflow steps

solar-panel
→wind-power

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Solar Panel

open full solver →

Solar PV SystemLive

panels to kilowatt-hours

Controls

Presets

Panel area (m²)

Panel efficiency (%)

Peak sun hours/day

Tilt angle (°)

A solar array's output is its rated power (area × efficiency at 1000 W/m²) multiplied by the peak sun hours your location receives — the equivalent full-intensity hours per day. Tilt matters too: aiming the panels near your latitude maximizes annual yield. Real systems lose a bit more to heat, wiring, and inverters.

▶ Run in Python

Data Inspector

System rating4.0 kW

Daily energy19.2 kWh

Annual energy6996 kWh

Homes powered0.7

Governing equation

P = η A G = 0.20 \times 20 \times 1000 = 4000 W

Reading this result: A 4.0 kW array in 5-sun-hour sun yields about 19.2 kWh/day — roughly 0.7 average homes.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

↓

Wind Power

open full solver →

Wind Turbine PowerLive

the Betz limit

Controls

Presets

Rotor diameter (m)

Wind speed (m/s)

Power coefficient Cp

Wind power scales with the cube of wind speed and the square of rotor diameter — which is why turbines keep getting bigger and why a windy site is worth so much more. No turbine can extract more than 59.3% of the wind's energy (the Betz limit); real machines reach about 45%. Below cut-in and above cut-out speeds they produce nothing.

▶ Run in Python

Data Inspector

Power output1.64 MW

Rated power2.83 MW

Swept area6362 m²

% of Betz limit71%

Governing equation

P = \frac{1}{2} ρ A v^{3} C_{p} = \frac{1}{2} (1.225) (6362) (10)^{3} (0.42) = 1.64 MW

Reading this result: In the ramp region power climbs with the cube of wind speed, so even a small gust adds a large jump in output.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

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Frequently asked questions

What is the Solar & Wind Site multi-solver?: Solar & Wind Site is a guided workflow that chains 2 individual PolySim solvers into one end-to-end analysis, piping each result into the next step.
Is it free to use?: Yes. Every step runs entirely in your browser using real numerics — no install, no account, no cloud cost. Custom or private solver packs are available as a paid service.