StoryManufacturing
Tesla begins Megapack 3 and Megablock production at Houston facility, targeting 50 GWh/year
Tesla's Houston Megafactory began production of Megapack 3 (5 MWh units) and Megablock (20 MWh integrated systems) in late 2026. The facility targets 50 GWh annual capacity and secured a $4.3B LFP cell supply deal with LG Energy Solution starting 2027. Megablock reduces installation time by 23% and construction costs by up to 40%.
- Megapack 3 delivers 5 MWh per unit, 28% more capacity than Megapack 2.
- Megablock integrates four units, transformer and switchgear as a single 20 MWh package.
- Thermal system redesign cuts connection points by 78%, speeding installation and maintenance.
- LG Energy Solution partnership supplies LFP cells from Lansing facility.