Latest Achievement: Hithium Launches 4 MWh Sodium-Ion Battery Energy Storage System with 785 Ah Cells

Leading energy storage manufacturer Hithium has officially launched its new ∞Power N4.0MWh sodium-ion battery energy storage system (BESS), featuring the upgraded ∞Cell N785Ah large-capacity sodium-ion cell.

Targeting utility-scale grid storage, the new solution is set for full-scale production and delivery in 2027, bringing a cost-effective, long-lifespan alternative to conventional lithium-based energy storage for global power projects.

Core Specs of ∞Cell N785Ah Sodium-Ion Cell

The newly launched ∞Cell N785Ah sodium-ion cell delivers up to 20,000 charge-discharge cycles and supports 2–8 hour energy storage durations, well suited for grid-scale stationary storage applications.

A key manufacturing advantage is that the sodium-ion cell can be produced on Hithium’s existing production lines built for its 1000Ah lithium-ion batteries.

This compatibility lowers capital investment for production expansion and speeds up capacity ramp-up.

Hithium previously rolled out its 162Ah sodium-ion cell back in December 2024, marking rapid product iteration within less than two years.

“Energy storage technologies must overcome two barriers to achieve large-scale deployment: affordability and availability,” said Nazar Yi, chief technology officer for Hithium.

∞Power N4.0MWh BESS System Design & Performance

• The ∞Power N4.0MWh containerized BESS comes with a 30-year design service life, matching the typical lifecycle requirements of traditional power infrastructure.
• Thanks to stacked cell architecture, the system cuts land occupation by 30% compared with earlier designs.
• It integrates an in-house developed BMS, achieving SOC estimation accuracy ≤2.5%.
• The system supports PCS voltage ranges of 800 V to 1500 V, boosting PCS utilization rate by over 20% versus its first-generation sodium BESS.

The unit adopts air-liquid hybrid cooling paired with intelligent thermal management linked to meteorological data. Its round-trip comprehensive system efficiency exceeds 88%. Auxiliary running power consumption drops by 30%, while standby power consumption reduces by 50%. Hithium targets an LCOS of roughly 1.5 US cents/kWh for this sodium BESS, though the company has not released formal commercial pricing or exact delivery timelines.

Market Strategy — Sodium-Ion as A Complement to Lithium Energy Storage

Hithium states that two main bottlenecks restrict the widespread deployment of energy storage: affordability and raw material supply security.

They confirmed its market rollout strategy will start with utility-scale projects, before expanding to commercial and industrial (C&I) energy storage and residential storage scenarios. As lithium resource constraints and high costs remain core bottlenecks for global storage deployment, the high-performance sodium-ion BESS provides a reliable, low-cost complementary solution for global EPCs, project developers and power investors.

The product will first serve large utility BESS projects, then gradually expand into commercial & industrial (C&I) and residential storage markets, offering global buyers another mature energy storage chemistry besides solar lithium iron phosphate batteries.

Industry Outlook

As energy storage demand surges worldwide, sodium-ion batteries are gaining attention as a promising low-cost stationary storage solution. This new 4MWh sodium BESS release demonstrates faster commercialization progress of sodium-ion technology. For project developers, sodium storage will bring more choices when evaluating long-duration, low-LCOS grid energy storage assets.

Contact our team to get professional technical comparisons and project adaptation solutions for sodium-ion and lithium-ion energy storage systems.