Solar Energy Systems: How They Work. The sun is already expelling massive 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 All Seasons Heating & A/C Co in Bloomington, you can limit your dependence on oil and gas and lower your utility bills. But how does it change from sunlight to energy? The simplest way to explain a solar energy system is that the system uses solar modules, which are composed of photovoltaic (PV) cells, to take in energy from the sun and convert it to electricity. This electricity will then power light, appliances and electrical devices in your home. Grid-tied PV systems Grid-tied PV systems are very common and the most affordable for residential applications. 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 producing electricity, your home will be able to use power through the utility grid. Additionally, when your system produces enough to power your home and then some, 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 putting your SunSource System’s electricity back into the grid. *Note: Most rebates and incentives that make a solar energy system less costly 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 linked to a utility grid and provide for a home’s entire energy consumption. Ready to go solar? Call All Seasons Heating & A/C Co at 812-638-4045 or create a meeting online. We’re able to help with all your Monroe County area solar energy system needs.