![]() ![]() String inverters are frequently the least expensive inverter option, and are a very durable technology that have historically been the most commonly installed inverter type. String (or centralized) inverter: A single inverter connects your entire array of solar panels to your electrical panel. String inverters can also add power optimizers to function similarly to a microinverter system. There are two basic types of solar inverters: string (or centralized) inverters and microinverters. Inverters change the DC electricity from your panels into usable AC electricity. Most homes and businesses, however, use alternating current (AC). The cells in your solar panels collect the sun’s energy and turn it into direct current (DC) electricity. ![]() However, many companies are experimenting with new ways to increase the efficiency of the solar cells at converting sunlight into electricity current, so now you’ll see many “half-cut” solar panels, where each cell is cut in half so you have double the number of cells on the solar module (i.e., 120 or 144). ![]() Typically, solar cells come in either 60 or 72 cell formats. ![]() For a more in-depth look at how solar panels and solar cells actually work, check out our article on the topic. Wires in the cells capture this flow of electrons, which is then combined with the output of other cells in a solar panel. Each solar panel, also referred to as a solar module, is typically about 4 feet by 6 feet in size, and weighs approximately 30 pounds.ĭespite having no moving parts, the “active” component of a solar panel is in the silicon cells themselves: when sunlight hits the silicon solar cells, it activates electrons, which begin to flow through the cell. Solar panels consist of a series of silicon solar cells covered by a sheet of glass and held together by a metal frame, with wiring and circuitry in and behind the cells to collect the flow of electrical current out of the solar cells. ![]()
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