Solar Energy Systems: How They Work. The sun is already expelling incredible amounts of energy, so why not put it to use? With the Lennox® SunSource® Energy System we carry at Campbell's Tempracure in Crystal Lake, you can cut down on your dependence on oil and gas and reduce your utility bills. But how exactly does this happen? 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 powers 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 lets you use your solar energy system to power your home. At times when the system isn’t generating electricity, your home will be able to use power through the utility grid. Additionally, when your system produces more electricity than you will use, it will be fed back into the grid through 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 an alternative for those in remote areas without utility service, however they’re much more expensive. A stand-alone system is not connected to a utility grid and provide for a home’s entire energy consumption. Ready to go solar? Call Campbell's Tempracure at 815-788-6283 or set up a consultation online. We’re able to help with all your Crystal Lake area solar energy system needs.