Small battery storage called solar batteries with few kWh storage capacity, are mostly in the private sector operated in conjunction with similarly sized photovoltaic systems to daytime bring revenue surpluses in yield poorer or unproductive hours in the evening or at night, and to strengthen their own consumption.
Tesla installed this large battery storage power plant like the 52 MWh project on Kauai, Hawaii with the objective to entirely time shift a 13 MW solar farm’s output to the evening. The aim is to reduce dependence on fossil fuels on the island.
Tesla installed a grid storage facility with a capacity of 80 MWh that makes it one of the largest accumulator batteries on the market. Tesla installed 400 Powerpack modules at the Mira Loma transformer station in California.
The memory serves to store energy at a low network load and then to feed this energy back into the grid at peak load. Prior to this, gas-fired power stations were used.