Grid Interactive Battery Inverters

A large portion of the energy generated by a typical PV system will be exported to the grid and there is increasing demand for solutions to enable better use of this energy through the use of energy storage.

• Adding battery storage enables this excess generation to be stored for use later when consumption is higher than generation.
• Some systems can also provide backup power in the event of grid failure.

Grid-interactive battery inverters, can export power to the utility grid, can charge a battery using surplus energy for use in times of low generation and some can also supply backup power to protected loads during a grid outage.

An energy meter is included to measure import/export and tell the battery when to charge or discharge. If more power is being generated than being used then instead of it being exported to the grid it is instead sent to charge the battery. As loads increase above generation and power starts to be imported it is instead taken from that stored in the battery.

• These inverters use a battery bank for energy storage and will not operate without batteries. They are used in addition to grid connect solar inverters.