Tesla's Shanghai Megafactory has achieved a significant milestone by producing over 2,000 Megapack energy storage systems in its first full year of operation. The facility, which began production in early 2025, doubled its output in the final five months of the year. This ramp-up underscores Tesla Energy's expanding role in global energy storage.
The Shanghai Megafactory, situated in the Lin-gang Special Area of the China (Shanghai) Pilot Free Trade Zone, marked its debut as Tesla's first dedicated energy storage factory outside the United States. Following the Shanghai Gigafactory for vehicles, this site focuses on Megapacks, large-scale battery units designed to enhance grid stability and integrate renewable energy sources. Each Megapack holds about 4 MWh of electricity, making them vital for utility-scale applications.
Production started steadily in early 2025, with the factory reaching 1,000 units by late July—achieved in under six months. The pace accelerated thereafter, adding another 1,000 Megapacks over the remaining five months, averaging around 200 units monthly. This controlled growth allowed Tesla to optimize operations, staffing, and supply chains. Most of the output has been exported, mainly to Europe and Australia, key markets for Tesla's energy solutions.
At full capacity, the factory aims to manufacture up to 10,000 Megapacks per year, providing roughly 40 GWh of storage. This development bolsters Tesla's worldwide network, complementing the California Megafactory, which hit its 10,000th unit in late 2024, and a new site under construction in Texas. As demand for large-scale batteries rises amid the shift to renewables, Shanghai's contributions highlight Tesla Energy's strategic push into international production.
