A specialized inverter receives power from your solar panels and converts the DC voltage they produce directly into grid-compatible AC power. The grid-tie inverter enables your home to not just import power from the utility, but export power to the utility as well.
[pdf] Power inverters are fitted with a rectifier circuit that can convert AC from the grid power to DC at the required voltage and current strength to charge the battery bank. The rectifier circuit uses the same cable connections to the battery used by the inverter circuit to charge the batteries.
[pdf] Most modern inverters have efficiency ratings between 90% and 98%. Let’s break it down: If you feed 1000 watts of DC power into your inverter and it outputs 950 watts of AC power, your inverter efficiency is 95%. The other 50 watts were lost in the conversion process—mostly as heat.
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