Tesla has unveiled two new energy storage products: Megapack 3, the latest generation of its utility-scale energy storage system, and Megablock, which integrates Megapack 3 with transformers and switchgear.
At an event in Las Vegas on the margins of the RE+ renewable energy convention, Tesla unveiled its latest generation of large-scale energy storage products.
As expected, Tesla unveiled Megapack 3, the latest generation of its biggest stationary energy storage battery system.
The company is now using bigger 2.8-liter battery cells, resulting in a higher energy capacity: roughly 5 MWh compared to 3.9 MWh for Megpack 2.
Tesla also significantly simplified the thermal bay, reducing the number of connections by 78%.
However, the more significant product unveiled by Tesla today is the Megablock, which combines four Megapack 3s directly connected to a megavolt transformer and switchgear.
This is what it looks like:
Tesla claims 23% faster installation time with more of the assembly being done in a factory setting rather than on-site.
Mike Snyder, Tesla’s VP of energy and charging, claimed that Tesla can deploy 1 GWh in 20 business days with this new Megablock configuration.
The company also claims a higher energy density at the site: 248 MWh per acre.
Snyder said that Tesla plans to build Megapack 3 in Houston starting in late 2026. We learned in March that Tesla was building a new Megafactory in Houston.
The energy executive stated that the factory would have a capacity of 50 gigawatt-hours (GWh) per year.
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