Solar Energy Systems: How They Work. The sun is already expelling incredible amounts of energy, which is exactly why you should put it to use in your home. With the Lennox® SunSource® Energy System we offer at Polestar Plumbing, Heating & Air Conditioning in Olathe, you can limit your dependence on oil and gas and reduce your utility bills. So how exactly does it work? The simplest way to explain a solar energy system is that the system uses solar modules made of photovoltaic (PV) cells to take in energy from the sun and convert it to electricity. This electricity is used to power light, appliances and electrical devices in your home. Grid-tied PV systems Grid-tied PV systems are the most common and least expensive for residential solar systems. The SunSource Energy System we have available is grid-tied, and that means it’s connected to your utility company’s power grid or power stations. Grid-tied allows you to use your solar energy system to power your home. At times when the system isn’t producing electricity, your home will be able to use power through the utility grid. In addition, when your system produces more electricity than you will use, it will be fed back into the grid through a process called net-metering. With net-metering, your meter spins forward if you’re using electricity from the grid and backward when you’re SunSource System’s electricity is going back into the grid. *Note: Most rebates and incentives that make a solar energy system easier to afford are only available when your system is grid-tied. Stand-alone PV systems are also available for those in remote areas without utility service, but they cost a lot more. A stand-alone system is not tied to a utility grid and provide for all of a home’s energy needs. Ready to go solar? Call Polestar Plumbing, Heating & Air Conditioning at 913-432-3342 or set up a meeting online. We’re able to help with all your Kansas City area solar energy system needs.