A sine wave power inverter is a necessary component for any modern solar energy system. It will convert current to usable current, which is alternating current (AC), which mirrors grid electricity. Because it produces clean and stable electricity, pure sine wave inverters are ideal for sensitive electronics, appliances with motors, and solar. An inverter converts your battery's DC power to standard 120V AC. Choose the wrong one and you'll damage your electronics — or simply have a bad time. Here's everything you need to know. DC power is pretty self-explanatory. In the case of solar cells, the current will vary fairly slowly through the day as the suns' intensity changes.