Tools
Plug-in solar tools
Quick, visual answers with public data: sun from the EU's PVGIS and the National Laboratory of the Rockies, prices from the EIA, appliances from ENERGY STAR. Nothing you enter leaves your browser.
Calculator
Will plug-in solar pay off where you live?
Panels that fit, solar month by month, savings and payback, with real sun and electricity prices for your state.
Sizer
What size portable power station do you need?
Tap the appliances you want to keep running and for how long. Get the battery capacity and output to look for.