From First Load to
Wiring Diagram in 6 Steps

Set Your Location & Season

The app uses your GPS or manual pin to calculate peak sun hours for summer, winter, and shoulder seasons. It factors in your roof tilt, panel orientation, and local shade risk to give you a real number — not a guess.

Choose Your Setup Type

A van build has different wiring standards than a cabin. A boat needs marine-grade wire sizing. The app knows the difference and applies the right standards — ABYC E-11 for marine, AS/NZS 3000 for Australian installs, NEC for US.

Add Your Loads

The loads library covers everything from a 12V fridge to a 240V air conditioner. Set how many hours per day each runs, and the app calculates your total daily Wh demand — the foundation of every other calculation.

Size Your Battery Bank

Battery sizing accounts for depth of discharge (50% for AGM, 80% for LiFePO₄), days of autonomy, and temperature derating. It recommends specific products from the database and shows you the exact wiring configuration.

Size Your Solar Array

The solar calculator works backwards from your daily Wh demand and peak sun hours to give you the minimum panel wattage. It then recommends MPPT controllers, checks string voltage against controller limits, and flags any issues.

Wire Sizing & Cable Runs

The wire calculator knows the DC current draw of every product you selected. It sizes each cable run for voltage drop and ampacity, applies temperature and conduit derating, and recommends the correct fuse for each circuit.