Typically, consumers see savings of around 25% of their current utility cost. On average, the data shows savings of about $138 a year for most households. Compared to the approximately $12,000 up-front cost to install rooftop solar panels and the 8 or so years it takes to realize the return on investment (ROI) for that installation, community solar savings are immediate and significant. It also provides an option for solar energy if you rent and can’t install rooftop solar panels where you live.