How a Solar Energy System Works. 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 Vancouver for hundreds of years. Air Pro Heating & Cooling LLC sells 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. 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 located in or around Vancouver, you’ll probably want a grid-tied PV system. These are the most affordable solar energy systems, and they’re linked 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 at times when the system isn’t gathering energy. In addition, grid-tied systems enable your system to feed additional energy back into the grid, which will make your meter spin backwards. This is the process of net-metering. The backward spin allows you to save on utility expenses that are decided based on 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 other option is a stand-alone PV system, which is more expensive. 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 Pro Heating & Cooling LLC in Vancouver is eager to help with your solar energy system questions. Give us a call at 360-571-5100 or set up an appointment online.