Solar Energy Systems: How They Work. If you want a more eco-friendly home, a “green” step is to add a solar energy system. After all, the sun’s energy has been shining down on us in Houston for millions of years. Air Houston Mechanical LLC sells the Lennox® SunSource® Energy System to help you create a home that relies more on natural energy and less on oil and gas. Just how does this system work? Put simply, the system uses solar modules, made up of photovoltaic (PV) cells, to collect energy from the sun and convert it to electricity. Afterwards, the electricity can power appliances, lights and other electrical devices in your home – from your HVAC systems to your phone charger. Grid-tied PV systems If you live in Huffman, you’re likely going to want a grid-tied PV system. These are the least costly solar energy systems, and they’re tied to your utility company’s power grid – hence the name grid-tied. This allows you to use solar energy from your system when the PVs are collecting energy and use electricity from the grid when the system isn’t gathering energy. Additionally, grid-tied systems allow your system to feed extra energy back into the grid, at which time your meter will spin backwards. This process is called net-metering. The backward spin helps you save on utility expenses that are determined by how far forward your meter has spun. You should note that most solar rebates and incentives are only available if your system is grid-tied. The second option is a stand-alone PV system, which is more costly. Stand-alone systems are not connected to the utility grid and are nice options when your home is in a remote location, or too far a distance from a utility service or power lines. Air Houston Mechanical LLC in Huffman is eager to help with your solar energy system questions. Give us a shout at 832-224-3887 or set up an appointment online.