Practical electrical design tools built by a licensed electrical engineer — from off-grid solar system sizing to NEC-based calculations.
Size a complete off-grid solar system, including solar array, battery bank, inverter, and charge controller, with compatible equipment recommendations.
Estimate the portable power station capacity you need based on your devices, usage time, and daily energy needs.
Fast single- and three-phase voltage drop calculations with conductor sizing and practical design guidance.
More tools in development: NEC Load Calculator · EVSE Load Calculator · Conduit Fill Calculator
Evergreen Off-Grid tools are built around real electrical design workflows—not generic online formulas. Calculations incorporate applicable code requirements, manufacturer data, and practical engineering considerations to help turn complex design decisions into clear, usable results.
Built around applicable NEC requirements and established electrical design practices.
Developed by a licensed professional electrical engineer with real-world design experience.
Useful answers, transparent assumptions, and actionable recommendations—not just numbers.
Is there an electrical calculation or design task you’d like to see simplified? Tell me what would make your work easier.
