Electrical Pro Toolkit: Essential Calculators & Tools

Electrical Pro Toolkit

The Electrical Pro Toolkit by Evergreen Off-Grid is your one-stop shop for powerful, practical, and professional-grade electrical tools — designed for DIYers, contractors, and engineers alike. Whether you’re sizing a solar array, calculating NEC loads, or tackling a complex voltage drop problem, these tools are built to save time, improve accuracy, and give you clear, permit-friendly results.

Why The Electrical Pro Toolkit Exists

Electrical design is often slowed down by chasing multiple code tables, running repetitive calculations, and cross-checking against manufacturer specs. The Electrical Pro Tool Kit brings those workflows into one place, giving you:

  • Speed – Enter your data once, get results instantly.

  • Clarity – Clean outputs that are easy to read and share.

  • Accuracy – Based on NEC requirements and engineering best practices.

  • Confidence – Designed by a licensed professional engineer.

What’s Inside (So Far)

We’re constantly adding new tools to the kit. Here’s what you can use right now:

  • Off-Grid Solar System Sizing Calculator – Estimate your complete solar setup, including panels, inverter, charge controller, battery bank, and wiring. Perfect for DIY solar builders who want a professional starting point.

  • NEC Load Calculator – Streamlined NEC Article 220-based service load calculation for residential and light commercial projects, with built-in demand factor logic.

  • Power Station Estimation Tool – Quickly figure out how many watt-hours (Wh) of portable power you’ll need based on your devices, usage hours, and days of operation. It then recommends power station models that match both your energy capacity and inverter power (W) requirements, making it simple to choose the right unit.

Coming Soon

We’re working on a growing library of tools to round out your electrical design arsenal, including:

  • EVSE Load Calculator – Sizing and voltage drop checks for electric vehicle charging stations.

  • Voltage Drop Calculator – Fast single- and three-phase calculations with AWG data.

  • Conduit Fill Calculator – Quickly verify conductor fill percentages.

  • And more specialized tools as the kit evolves.

Who The Electrical Pro Toolkit Is For

  • Homeowners & DIYers – Confidently design and check your own systems.

  • Installers – Cut down design time and avoid costly miscalculations.

  • Engineers – Use as a quick reference or to double-check manual calculations.

Get Started Today

Our goal is to make professional-quality design tools accessible to everyone. The more tools we add, the more powerful your toolkit becomes.