How a Solar Energy System Works. If you want a more eco-friendly home, a natural step is to purchase a solar energy system. After all, the sun’s energy has been shining down on us in Manassas for millions of years. Twin Air LLC sells the Lennox® SunSource® Energy System to help you create a home that relies more on natural energy and less on oil and gas. But how does this system work? 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 can be used to 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 Manassas, 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 at times when the system isn’t gathering energy. Additionally, grid-tied systems let your system feed extra energy back into the grid, causing your meter to spin backwards. This process is called net-metering. The backward spin helps you save on utility expenses that are determined 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. Another option is a stand-alone PV system, which costs more. Stand-alone systems are not linked 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. Twin Air LLC in Manassas is happy to help with your solar energy system questions. Give us a buzz at 703-666-8907 or book an appointment online.