The Tesla Megapack is large-scale rechargeable lithium-ion battery stationary energy storage product, intended for use at battery storage power stations, manufactured by Tesla Energy, the clean energy subsidiary of Tesla, Inc.
Launched in 2019, each Megapack can store up to 3 megawatt-hours (MWh) of electricity. Each Megapack is a container that is sized slightly under the size of the ISO intermodal container. Designed to be deployed by utility companies, Megapacks can be used to store energy generated by intermittent renewable power sources, such as solar and wind. The energy stored can be used by the grid as required, for example during periods of peak electricity demand.
Tesla Energy also offers smaller battery energy storage devices: the Powerwall, intended for home use, and the Powerpack, intended for use by businesses or on smaller power utility projects.