Integrated solar energy system, 18 panels of 450 watts, an 11 kW inverter, and 12 batteries of 200 amps. It powered a villa for approximately two and a half years. The reason for selling is the arrival of electricity. Note: The inverter has a minor issue. At sunset and sunrise, the current disconnects, and the switching is manual from the panels to the batteries in the evening, and from the batteries to the panels in the morning. Its charging is very good, but I don't know if the problem is with the programming or the switching controller.