Solar Energy Systems: How They Work. If you want a more environmentally friendly home, one step is to install a solar energy system. After all, the sun’s energy has been shining down on us in San Luis Obispo County for thousands of years. Paso Robles Heating and Air sells the Lennox® SunSource® Energy System to help you create a more efficient home that doesn’t heavily rely 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. After this process, 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 in Paso Robles, 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 lets you 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 enable your system to feed additional energy back into the grid, causing your meter to spin backwards. We call this process 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. Another 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, or too far a distance from a utility service or power lines. Paso Robles Heating and Air in Paso Robles is ready to help with your solar energy system questions. Give us a buzz at 805-203-8667 or book an appointment online.