Solar Energy Systems: How They Work. If you want a more environmentally responsible home, a “green” step is to install a solar energy system. After all, the sun’s energy has been provided to us in Phoenix for hundreds of years. Dial One Mears Air Conditioning & Heating Inc offers the Lennox® SunSource® Energy System to help you create a greener, less oil- and gas-dependent home. But how does this system work? Put simply, the system uses solar modules, made up of photovoltaic (PV) cells, to take in energy from the sun and convert it to electricity. Then, the electricity can power appliances, lights and other electrical devices in your home – from your HVAC systems to your phone charger. Grid-tied PV systems If you’re in Phoenix, you’re likely going to 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 enable your system to feed extra energy back into the grid, causing your meter to spin backwards. This is the process of net-metering. The backward spin allows you to save on utility expenses that are determined by how far forward your meter has spun. You should 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 connected to the utility grid and are nice options when your home is in a remote location, not near a utility service or power lines. Dial One Mears Air Conditioning & Heating Inc in Phoenix is ready to help with your solar energy system questions. Give us a call at 602-832-7808 or book an appointment online.