Solar Energy Systems: How They Work. If you want a more environmentally friendly home, a “green” step is to add a solar energy system. After all, the sun’s energy has been cleanly shining down on us in Plainfield for hundreds of years. PWA Heating & Cooling 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? 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 can be used to power appliances, lights and other electrical devices in your home – from your HVAC systems to your computer. Grid-tied PV systems If you’re located in or around Plainfield, you will want a grid-tied PV system. These are the least costly solar energy systems, and they’re connected 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 enable 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 allows you to save on utility expenses that are totaled by how far forward your meter has spun. Please 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 tied to the utility grid and are nice options when your home is in a remote location, not near a utility service or power lines. PWA Heating & Cooling Inc in Plainfield is eager to help with your solar energy system questions. Give us a buzz at 815-768-6656 or book an appointment online.