Pick the devices you need running when the grid goes down — lights, phone charger, fridge, whatever — adjust the hours per day, and we'll calculate exactly how much battery and solar you need for your location. Drop in your ZIP code and we factor in your region's actual sun hours, not some national average.
Bottom line: solar setups get expensive fast when you guess wrong. This tool sizes your system to your actual usage so you're not overspending on panels you don't need or undersizing a battery that dies by midnight.