Screened usable wind power calculator

The 0.40 factor is a practical capture assumption; turbine performance depends on speed and control limits.

Units

P_{\text{usable}} = 0.40 \times K \times A \times V^{3}

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

Given

P_{\text{usable}} = 0.40 \times 0.00508 \times 680 \times {22}^{3} \approx 14{,}713

Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.

Symbol	Meaning	Unit
$P_{\text{usable}}$	screened useful power	W
$\rho$	air density for the specified wind condition	kg/m³
$A$	swept area	m²
$V$	wind speed	m/s