Tesla's battery technology extends from electric vehicles to energy storage field
On March 21, 2025, Tesla's first batch of Megapack energy storage systems was officially exported from its Shanghai Energy Storage Megafactory. It is reported that the first batch of Megapack energy storage systems will be shipped to Australia. Subsequently, the Megapack energy storage systems produced at the Shanghai Energy Storage Megafactory will be supplied to the domestic and Asia-Pacific markets.
Megapack is an ultra-large commercial electrochemical energy storage system designed by Tesla specifically for utility-scale energy storage. Each unit can store approximately 3.9 megawatt-hours of electricity, providing an efficient solution for grid stability and renewable energy integration.
In May 2024, Tesla's Shanghai Energy Storage Megafactory officially broke ground. It only took more than 8 months from the official commencement of construction to production. Currently, Tesla has set up one energy storage Megafactory each in Lathrop, the United States, and Shanghai, China. The planned total annual production capacity is 80 gigawatt-hours, which can meet the annual electricity needs of 10 million households.
In terms of energy conversion efficiency, Tesla's energy utilization rate is more than 4 times that of traditional fuel vehicles. Tesla's electric drive efficiency reaches a maximum value of 97% at a speed of 80-100 kilometers per hour, higher than the energy conversion rate of around 30% for fuel vehicles. This means that for every CNY 10 spent on energy replenishment, Tesla can use more than CNY 9 worth of energy to drive the vehicle, while other electric gas vehicles have a lower proportion, and fuel vehicles turn CNY 7 into exhaust emissions. Calculated according to the EPA test standards, the newly updated Model Y can run 6.9 kilometers on one kilowatt-hour of electricity.