As soon as your utility approves your interconnection, an installation commonly lasts 1 to a few days for residential rooftop; for a longer period for ground mount. First, There exists a 30% federal tax credit rating obtainable for you if you put in a solar panel within your business or https://www.mediafire.com/file/ce3mx6mfxrudtgz/How_Solar_Panel_Installation_in_WA_Can_Reduce_Your_Electricity_Bills/file