How a Solar Energy System Works. If you want a more eco-friendly home, a “green” step is to install a solar energy system. After all, the sun’s energy has been cleanly shining down on us in Lexington-Fayette for millions of years. Thornberry Bros Inc offers the Lennox® SunSource® Energy System to help you create a home that relies more on natural energy and less on oil and gas. But how does this system work? In a sentence: the system uses solar modules, made up of photovoltaic (PV) cells, to harvest energy from the sun and convert it to electricity. Then, the electricity will power appliances, lights and other electrical devices in your home – from your HVAC systems to your computer. Grid-tied PV systems If you’re in Winchester, you’re likely going to want a grid-tied PV system. These are the least expensive solar energy systems, and they’re tied to your utility company’s power grid – hence the name grid-tied. This lets you use solar energy from your system when the PVs are collecting energy and use electricity from the grid at times when the system isn’t gathering energy. Grid-tied systems also allow your system to feed additional energy back into the grid, which will make your meter spin backwards. This process is called net-metering. The backward spin lets you save on utility expenses that are determined by how far forward your meter has spun. It’s important to note that most solar rebates and incentives are only available if your system is grid-tied. Another option is a stand-alone PV system, which is more costly. Stand-alone systems are not tied to the utility grid and are fine options when your home is in a remote location, not near a utility service or power lines. Thornberry Bros Inc in Winchester is ready to help with your solar energy system questions. Give us a call at 859-414-0596 or schedule an appointment online.