Battery storage systems store electricity, such as from a solar system or the electricity grid, for use at another time.
Battery systems can vary in size. For example:
small systems (1 kilowatt hour (kWh) to 12kWh) for households or small to medium businesses
large systems (up to and over 200kWh) for business
grid-scale systems (up to and over 1 megawatt hour) operated by electricity generators and network providers.
