Solar Energy Systems: How They Work. If you want a more environmentally responsible home, one step is to install a solar energy system. After all, the sun’s energy has been shining down on us in Stuart for thousands of years. Nisair Air Conditioning sells the Lennox® SunSource® Energy System to help you create a home that relies more on natural energy and less on oil and gas. So how does this system work? Put simply, 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 TV. Grid-tied PV systems If you’re in Stuart, you’re likely going to want a grid-tied PV system. These are the least costly 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. 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 allows you to 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. The other option is a stand-alone PV system, which costs more. Stand-alone systems are not connected to the utility grid and are good options when your home is in a remote location, far away from a utility service or power lines. Nisair Air Conditioning in Stuart is happy to help with your solar energy system questions. Give us a call at 772-318-4252 or book an appointment online.