WattPlanner

Solar Generator Planning,
Built on Real Math

Runtime estimates, solar charging times, and sizing guides — calculated from verified manufacturer specs, not guesswork.

15
Power Stations
8
Solar Panels
25
Appliances
24
Runtime Estimates

Three Tools, One Site

Everything you need to plan your solar power setup.

How We Calculate

Every number on this site comes from verified manufacturer specifications or deterministic math formulas. We never invent specs. If a value is uncertain, we mark it and exclude it from calculations.

Read our methodology →