CATL says sodium batteries are mainstream-ready, signs 60 GWh deal

> The “DeepSeek moment” comparison is a bit hyperbolic, but the underlying point holds. If sodium-ion can deliver 15,000+ cycles at a fraction of lithium’s raw material cost, it could fundamentally reshape the economics of grid-scale storage. That matters enormously for the energy transition — cheap, long-lasting stationary storage is arguably the single biggest bottleneck to scaling renewable energy. We’ll be watching closely to see if CATL can actually deliver at this scale, but the commitment from HyperStrong suggests the technology is no longer a research project. It’s a product.

This is great to see but LFP cells are already so cheap this will likely be more of an incremental improvement than a fundamental reshaping of the economics of grid scale storage.

Average costs of a new utility scale system are around $125/kWh of which $75/kWh is equipment of which $40/kWh is the LFP cells. [1] This brings cell cost down by over 50% to $19/kWh [2] but that only reduces equipment costs by a bit over 25% and total capital costs by 17%.

[1] https://ember-energy.org/latest-insights/how-cheap-is-batter...

[2] https://www.circularbusinessreview.com/catls-19-kwh-sodium-i...

Battery dimensions are same as CATL's 587 Ah lithium storage cell:

Length 73.5mm

Width 286mm

Height 216mm

Apparently dimensions for the lithium cell were designed based on constraints: maritime transport weight limits (50t), 1500V max system voltage ceiling, 20-foot container (turn key system - image https://www.ess-news.com/2025/04/16/hithium-unveils-587-ah-c... ).

I assume the Sodium cells are heavier but they chose the same cell size for physical backwards compatibility.

> it’s not about EVs — it’s about energy storage.

Where have I seen this writing style before...