I'm in the process of getting solar panels to provide the electricity for my house. I live in the city, but the electric bill is going through the roof. An engineer checked my peek usage, and recommends an 8.7 KW (31 panel) installation. My question is - it only comes with a 7 KW inverter. If the panels can provide 8.7KW, why shouldn't the installation include an 8.7KW inverter?
During the day, any electricity I don't use is fed into the grid, figuratively running the meter backwards, and the savings will ostensibly pay for the installation. At night, I get power from the grid.
Any comments?