We installed 38 Itek 305 watt panels on this home facing East, South, and West. It produced 49 KWH on a single clear day in February alone. Consider the average home uses 30 KWH per day. We also installed a critical loads panel and an LG Chem Resu Lithium Ion battery for backup. This is similar to the Tesla Powerwall and stores 10KWH of electricity.