A solar inverter typically has power ratings that range significantly, usually between 1 kW to over 10 kW. This variability depends on the inverter type, application, and the solar array size it supports. . How much power does a solar inverter have? 1. The main function of a solar inverter is to. . A solar inverter or photovoltaic (PV) inverter is a type of power inverter which converts the variable direct current (DC) output of a photovoltaic solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical. . Most UK homes need at least a 5 kW inverter. 68 kW is common, larger homes or those with batteries benefit from a 5 kW+ system. What is a solar inverter? A solar inverter converts electricity between “direct current” (DC) and “alternating current” (AC). Electricity produced by solar panels. . A solar inverter should closely match your solar system's output in kW—typically within 80% to 120% of your total panel capacity. Too big = wasted money. Ideally, the inverter's capacity should match the DC rating of your solar array. For example, a 5 kW solar array typically requires a 5 kW. . Before determine the inverter size, the most important thing is to calculate your average daily power consumption (kWh) and calculate your solar panel array size to match your power consumption. You could follow our to make this estimation.