Solar + Battery Build Calculator

Click anywhere in the continental US to size the cheapest solar + battery build that keeps a constant load powered for your target uptime — based on 19 years of hourly sun data from PVGIS. Sizes and cost are reported per kW of load (everything scales linearly with load). Panels are assumed to lie flat.

Cost assumptions
Click a location to begin.

Average year

Each point is the mean across all years () at that hour of the year.