How a Solar Energy System Works. If you want a more environmentally responsible home, a natural step is to purchase a solar energy system. After all, the sun’s energy has been cleanly shining down on us in Northwest Nebraska for thousands of years. MPC Heating & Cooling offers the Lennox® SunSource® Energy System to help you create a more efficient home that doesn’t heavily rely 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 will power appliances, lights and other electrical devices in your home – from your HVAC systems to your TV. Grid-tied PV systems If you live in Chadron, you’ll probably want a grid-tied PV system. These are the least expensive solar energy systems, and they’re linked 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 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 decided based on 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 costs more. Stand-alone systems are not linked to the utility grid and are good options when your home is in a remote location, not near a utility service or power lines. MPC Heating & Cooling in Chadron is eager to help with your solar energy system questions. Give us a shout at 308-832-4321 or schedule an appointment online.