The PV solar panels use the light from the sun to generate DC electricity that is stored in an array of batteries. The batteries then discharge the power to an inverter which is used to convert the DC electricity to AC electricity for use by building systems and appliances.

In a pure off-grid system, there is no access to the electricity grid, and we will size the battery bank according to the electricity consumption and the days of autonomy. In certain situations, it is also recommended to have a small backup generator to charge the batteries during the least sunny days of the year.

Batteries can also be installed even though you are connected to the electricity grid. When the grid is up, the system works as any other grid-tied system where all surplus energy from the solar is sold back to the grid. However, during a power outage, critical loads will remain powered on and be fed through the batteries. (Furnaces, sewage and water pumps, etc.). During the power outage, the solar will also be able to supplement the loads.

Solun works with several different inverter companies and install botH lithium and lead acid batteries.