Solar Energy Systems: How They Work. If you want a more environmentally responsible home, a “green” step is to purchase a solar energy system. After all, the sun’s energy has been cleanly shining down on us in Robstown for millions of years. McNatt Inc carries the Lennox® SunSource® Energy System to help you create a greener, less oil- and gas-dependent home. Just how does this system work? In a sentence: the system uses solar modules, made up of photovoltaic (PV) cells, to take in energy from the sun and convert it to electricity. After this process, 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 Robstown, you’re likely going to want a grid-tied PV system. These are the most affordable 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. In addition, grid-tied systems let your system feed extra energy back into the grid, at which time your meter will spin backwards. This is the process of net-metering. The backward spin allows you to save on utility expenses that are totaled 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. 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 fine options when your home is in a remote location, or too far a distance from a utility service or power lines. McNatt Inc in Robstown is eager to help with your solar energy system questions. Give us a buzz at 361-888-4808 or schedule an appointment online.