Tools
Calculators
Battery bank
The original staging calculator: classes, days, solar offset, voltage, Vatrer links.
Solar array
Watt-hours, sun-hour presets, and the four pack links.
Wire size and voltage drop
The ABYC-style copper table, derates, and fuse steps.
Fuel savings
Recovered class weights. Gallons only with your MPG.
Max wind
Parked and 65 mph tipping bands.
State license lookup
CA, TX, MD, IL as published. Other states stay on the default.
Battery runtime
Your watt-hours, your usable fraction, your load.
Weight and payload
GVWR math with water at 8.34 lb/gal.
Generator vs solar
One year of fuel and hookup fees you enter.
Payback
Breakeven chart from those same kinds of inputs.
Location-based solar production lives on the forecast, because it needs a weather service rather than the old 3 / 4 / 5.5 hour presets.