Solar Energy Systems: How They Work. The sun is already expelling huge amounts of energy, so why not put it to use? With the Lennox® SunSource® Energy System we offer at Custom Sheetmetal & Roofing, Inc. in Topeka, you can cut down on 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 collect 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 offer is grid-tied, meaning it’s connected to your utility company’s power grid or power stations. Grid-tied enables you to use your solar energy system to power your home. On occasions when the system isn’t creating electricity, the utility grid will supply power to your home. And, when your system produces an excess amount of electricity, it will be fed back into the grid through the process of net-metering. With net-metering, your meter spins forward if you’re using electricity from the grid and backward when you’re feeding electricity from your SunSource System 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 an alternative for those in remote areas without utility service, but they’re considerably more expensive. A stand-alone system is not tied to a utility grid and provide for the entirety of a home’s energy consumption needs. Ready to go solar? Call Custom Sheetmetal & Roofing, Inc. at 785-357-6200 or schedule a meeting online. We’re able to help with all your Topeka area solar energy system needs.