Applications & Installations

Freen launches scalable sodium-ion battery storage

The Estonian home and commercial storage systems come in low- and high-voltage models. The high-voltage option can scale to ten modules, for 100.8 kWh, and a six-module, low-voltage version to 45 kWh.
Sandra Enkhardt
By
Sandra Enkhardt
Freen’s sodium-ion storage systems are available in high- and low-voltage versions suitable for residential, commercial, and industrial applications | Image: Freen

From ESS News

Freen OÜ is launching its latest generation of sodium-ion battery storage systems. The Freen-BSH and Freen-BSL products are developed and produced in Estonia.

The high-voltage BSH model, and low-voltage BSL are scalable; designed for homeowners, farmers, and other commercial and industrial users; and can power off-grid systems, be combined with solar; and be used to reduce peak loads.

Freen, which sells €230 ($268)/kWh lithium-ion storage systems, said its sodium-ion batteries start at €330/kWh.

The manufacturer says the BSH product has a capacity of 10.08 kWh per module, operates at a nominal 575 V, and has a voltage range of 385 V to 760 V. Maximum discharge current is 8.75 A, according to Freen, and up to 10 modules can be connected in parallel, increasing capacity up to 100.8 kWh.

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Comments

Paul Phillips
Sep 04, 2025

Prices seem a bit strange given Sodium-ion is supposed to be 10% the cost of Lithium-ion to manufacture.

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Ian McLeod
Sep 04, 2025

I wonder why Sodium storage is more costly than Lithium? Is this an early stage thing? Or what are the other advantages of sodium if more costly at this stage?

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