A grid tie inverter is a device that converts direct current (DC) from a renewable energy source, such as solar panels or a wind turbine, into alternating current (AC). The AC can then be used to power electrical loads or to be sent back into the electrical grid.
Grid tie inverters are an important part of many renewable energy systems, as they allow excess energy to be stored or returned to the grid, instead of being wasted. When sized correctly, a grid tie inverter can maximize the output of a renewable energy system and help reduce your electric bill.
The grid tie inverter is able to match the frequency of the AC electricity that it is creating with the frequency of the AC electricity on the grid. This is how the grid tie inverter is able to send the electricity that it is creating back to the grid.When the renewable energy source is producing power, the grid tie inverter will convert the DC power into AC power and send it to the electrical grid. The inverter will also disconnect the renewable energy source from the grid when the power is not needed, such as at night or during a power outage.