SPTEch's Photovoltaic projects use solar panels to convert sunlight into electricity. The system is made up of one or more solar Photovoltaic (SPV) panels, a DC/AC power converter (also known as an inverter), a racking system that holds the solar panels, electrical interconnections, and mounting for other components. Optionally it may include a maximum power point tracker (MPPT), battery system and charger, solar tracker and an energy management software. A small SPV system generally provides energy to a single consumer. Large grid-connected SPV systems can provide the energy needed by many customers. The electricity generated can be either stored, used directly, or fed into a large electricity grid. Systems are generally designed in order to ensure the highest energy yield for a given investment.