Tuesday, September 9, 2025

Tesla unveils Megablock and Megapack 3: extra energy and power deployed sooner

Tesla has unveiled two new power storage merchandise: Megapack 3, the newest technology of its utility-scale power storage system, and Megablock, which integrates Megapack 3 with transformers and switchgear.

At an occasion in Las Vegas on the margins of the RE+ renewable power conference, Tesla unveiled its newest technology of large-scale power storage merchandise.

As anticipated, Tesla unveiled Megapack 3, the newest technology of its largest stationary power storage battery system.

The corporate is now utilizing larger 2.8-liter battery cells, leading to a better power capability: roughly 5 MWh in comparison with 3.9 MWh for Megpack 2.

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Tesla additionally considerably simplified the thermal bay, decreasing the variety of connections by 78%.

Nonetheless, the extra important product unveiled by Tesla at the moment is the Megablock, which mixes 4 Megapack 3s straight linked to a megavolt transformer and switchgear.

That is what it seems like:

Tesla claims 23% sooner set up time with extra of the meeting being finished in a manufacturing facility setting relatively than on-site.

Mike Snyder, Tesla’s VP of power and charging, claimed that Tesla can deploy 1 GWh in 20 enterprise days with this new Megablock configuration.

The corporate additionally claims a better power density on the web site: 248 MWh per acre.

Snyder mentioned that Tesla plans to construct Megapack 3 in Houston beginning in late 2026. We discovered in March that Tesla was constructing a brand new Megafactory in Houston.

The power government said that the manufacturing facility would have a capability of fifty gigawatt-hours (GWh) per yr.

Electrek’s Take

This appears like a robust incremental enchancment to an already fashionable power storage product.

Nonetheless, the brand new battery cells are most likely the largest a part of the advance and Tesla doesn’t manufacture these.

In reality, Tesla’s battery cell suppliers BYD and CATL, each have battery programs that compete with Tesla’s Megapack, which might show problematic for Tesla within the close to future.

I feel Tesla’s strongest power storage product might be its Autobidder software program. It optimizes power storage merchandise like nothing else. It could do effectively to maintain licensing this to different power storage programs.

Tesla’s subsequent largest benefit is the whole integration of power storage, energy electronics, software program, and repair. It makes for a gorgeous turnkey options for utilities and large-scale tasks, like AI knowledge facilities.

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