InoBat is targeting the commercial rollout of a sodium-ion battery energy storage system in 2030, that does not rely on materials sourced from China, according to a newly published investor presentation.
The Slovakian battery company plans to undertake joint development and R&D work during 2026, followed by pilot-scale production and BESS integration testing in 2027.
Its roadmap calls for pre-commercial component integration and the development of a localised supply chain during 2028 and 2029. Commercial rollout of a fully sodium-ion BESS is scheduled for 2030.
InoBat said sodium-ion technology offered a stable, relatively low-cost material structure that could reduce exposure to commodity-price volatility. It also claimed the chemistry provided greater intrinsic safety than lithium iron phosphate and potentially better performance at low temperatures.
The company considers sodium-ion suitable for both stationary energy storage and low-voltage automotive applications.
A separate automotive roadmap envisages cell validation between 2026 and 2028, followed by high-volume sodium-ion production for vehicle manufacturers and tier-one suppliers from 2029. InoBat is targeting technology-readiness level 8–9 within 24 months and eventual GWh-scale manufacturing capacity in Western markets.
InoBat is working with US low-voltage battery manufacturer Clarios and Swedish sodium-ion developer Altris. The companies announced in January that the first automotive test cells would be manufactured using Altris technology at InoBat’s pilot facility in Voderady, Slovakia. Validation and testing are being conducted at Clarios’s R&D laboratories in Hannover, Germany.
The sodium-ion plans were included in an investor presentation made public on 14 August through a filing by Cartesian Growth Corporation II with the US Securities and Exchange Commission.
Cartesian II and InoBat agreed a proposed business combination in July that values InoBat at up to $1.265 billion, including performance-dependent earn-outs. The transaction includes $77.5 million in committed investment and is expected to close during the fourth quarter of 2026, subject to shareholder and regulatory approvals.
InoBat said it had delivered or secured contracts for 875 MWh of utility-scale BESS capacity in Europe. Its 2,000m² BESS production facility at Voderady has the capacity to scale to an annual output of 5 GWh.
