Solar Energy Systems: How They Work. If you want a more environmentally friendly home, a “green” step is to install a solar energy system. After all, the sun’s energy has been provided to us in Florissant for thousands of years. B & B Heating & Cooling offers the Lennox® SunSource® Energy System to help you create a greener, less oil- and gas-dependent home. So 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 TV. Grid-tied PV systems If you’re in Florissant, you will 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 when the system isn’t gathering energy. In addition, grid-tied systems enable your system to feed surplus energy back into the grid, which will make your meter spin backwards. We call this process net-metering. The backward spin lets you save on utility expenses that are totaled 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 costs more. Stand-alone systems are not connected to the utility grid and are fine options when your home is in a remote location, far away from a utility service or power lines. B & B Heating & Cooling in Florissant is ready to help with your solar energy system questions. Give us a buzz at 314-838-9800 or schedule an appointment online.