Simplified engineering tools for better electrical design

Practical electrical design tools built by a licensed electrical engineer — from off-grid solar system sizing to NEC-based calculations.

Featured Tools

Off-Grid System Designer

Size a complete off-grid solar system, including solar array, battery bank, inverter, and charge controller, with compatible equipment recommendations.

Power Station Estimator

Estimate the portable power station capacity you need based on your devices, usage time, and daily energy needs.

Voltage Drop Calculator

Fast single- and three-phase voltage drop calculations with conductor sizing and practical design guidance.