DIY Solar Design.
Engineered for Safety.

We use exact coordinate positioning and historical irradiance data to tell you precisely what your panels will output on any day of the year. No guesses, just physics.

Automatic 1.25x headroom calculations, wire gauge sizing, and voltage drop warnings ensure your system won't melt down or violate local codes.

Calculate exactly how many kilowatt-hours of battery capacity you need to survive the night or outlast a grid outage without over-purchasing hardware.