Tesla Starts Megapack 3 Production in Texas
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- Tesla started production of the Megapack 3 at its Brookshire, Texas Megafactory, achieving a rollout just 16 months after groundbreaking with a designed annual capacity of 50 GWh.
- Megapack 3 holds about 5 MWh of energy—28% more than the 3.9 MWh Megapack 2 XL—by using larger 2.8-liter cells while maintaining the same physical footprint.
- Tesla reduced thermal-system connection points by 78% in Megapack 3 compared to the prior generation, cutting potential leak points and lowering assembly and service labor.
- Megablock, a new system bundling up to four Megapack 3 units with integrated transformer and switchgear, enables deployment of 1 GWh in 20 business days and increases site density to 248 MWh per acre.
- Tesla signed a $5 billion, 25 GWh Megapack supply deal with NatPower in Europe, reflecting strong demand from utilities and data-center operators for faster-to-deploy storage.
- Brookshire Megafactory is now Tesla’s largest dedicated energy storage facility by planned output, surpassing the combined capacity of the Lathrop, California and Shanghai plants.
Why it matters: Grid-scale battery projects often stall due to field wiring delays and interconnection bottlenecks; by shifting integration into the factory, Tesla cuts deployment time by weeks and lowers labor costs, giving utilities and developers a faster path to operational status. This advantage becomes critical as global demand for reliable, rapidly deployable storage surges amid rising electricity rates and strained grids.
