For 10kW solar panel array a 8 kW inverter capacity is the minimum size you can use because installers typically only recommend that get an Array-To-Inverter ratio of less than 1. Minimum size of solar inverter = 10000 watts of solar ÷ 1. . DC Oversizing Maximizes ROI: Installing 12-15kW of solar panels with a 10kW inverter (120-150% oversizing) significantly improves energy harvest during low-light conditions and partial shading, increasing overall system efficiency and financial returns by 15-25%. An inverter is a critical component of any solar energy system as it converts the DC (direct current) power generated by your solar panels into. . Solar inverters convert the direct current (DC) electricity produced by solar panels to alternating current (AC) electricity, which is used to power home appliances and electronic devices. While there are several types of inverters including hybrid, grid-tie, and off-grid inverters they all perform. . But before you start soaking up the sun, you'll need the right inverter to match your system. Usually it is between 8kW and 11kW as a maximum AC power output.