When all the appliances draw power from the inverter, it drains its battery, and to recharge, it consumes more electricity. With the rising costs of electricity and. However, one of the primary concerns for individuals considering the installation of an inverter system is the amount of electricity it consumes to charge. Square Wave Inverters: These are the simplest and least expensive types. Understanding inverter specifications helps optimize power consumption and. The electricity that an inverter uses depends on the loads it is powering, and its impact reflects on the monthly bills. An inverter converts direct current (DC) from sources such as batteries or solar panels into alternating current (AC). Its primary function is to store power, and there is a.