The best benefit of solar power is that it can dramatically lower your electric bill from day 1! In fact, a properly sized commercial solar photovoltaic power system may be able to offset around 70%-100% of your electric usage. So, if you spent $200 last month, you might save 70% Using solar to generate electricity and/or hot water for your home effectively locks in a low utility rate now for the lifetime of your system – which can be 30+ years! Together with home energy efficiency improvements, the energy from solar power systems can be used to make your home more comfortable and luxurious.