AUS
NZ
UK
CA
USA
FRA
GER
ESP
ITA
NLD
PRT
SWE
GRC
IND
POL
BRA
ZAF
RUS
CHN
UAE
Highlights
- Independent DNV study identified CERENERGY® as a promising emerging battery technology.
- CERENERGY® builds on the same Na Ni-Cl chemistry as the 28-year-old Zebra battery, which showed no performance loss after being reactivated following nearly three decades in storage.
- The battery passed extreme stress tests with no performance loss under high heat, overcharge, or deep discharge.
- S&P Global has awarded CERENERGY® the highest “Dark Green” environmental rating.
- Altech, subject to shareholder approval, will increase its stake in the project to 75%, with Fraunhofer retaining 25%.
Altech Batteries Limited (ASX:ATC, FRA:A3Y), a specialist in next-generation battery technologies, made significant strides in 2025 with the development of its CERENERGY® Sodium Chloride Solid State (SCSS) battery technology. Being developed in partnership with Germany's renowned Fraunhofer IKTS institute, CERENERGY® is emerging as a game-changing alternative to conventional lithium-ion batteries. It has gained top environmental rating and demonstrated unmatched longevity and safety.
CERENERGY®’s Technological Superiority
Altech engaged global energy advisory firm DNV to conduct an independent study comparing CERENERGY® batteries to other prominent alternative technologies including lithium-ion, sodium-sulphur, and vanadium flow batteries.
DNV concluded that -
Data source: Company update
More on this development can be read here.
Exceptional Long-term Shelf Life of CERENERGY®
In May 2025, Altech revealed compelling proof of CERENERGY®’s long-term durability. The batteries are based on sodium-nickel-chloride chemistry, which traces its origins to the first-generation Zebra batteries. After nearly three decades in storage, a 28-year-old Zebra battery was activated in a demonstration of durability. The battery performed like new, showing no signs of degradation in function or capacity. This breakthrough highlights the potential of CERENERGY® batteries for long-term storage applications.
The CERENERGY® system builds on the same Na-Ni-Cl electrochemical principles as the Zebra batteries but features improved energy capacity - 250Wh per cell compared to 100Wh in earlier generations and at a lower cost.
Safety Proven Under Extreme Conditions
Altech’s JV partner Fraunhofer IKTS has conducted intensive stress testing on individual CERENERGY® cells. The results confirmed the safety and operational robustness of the technology.
The tests included high-temperature exposure, overcharge, over-discharge, C rate tests and accelerated cycling, all of which the CERENERGY® cells passed without damage or performance loss.
Environmental Leadership Recognised with ‘Dark Green’ Rating
In January 2025, CERENERGY® achieved the highest environmental project rating - “Dark Green” from S&P Global Ratings agency in Oslo. This rating, part of the ‘Shades of Green’ methodology, acknowledged the battery’s low lifecycle emissions, estimated to be just one-third of those generated by lithium-ion counterparts.
This certification opens access to green bond financing.
Strategic Ownership Expansion
In February 2025, Altech announced that, subject to shareholder approval, it will advance its position in the CERENERGY® project by acquiring an additional 18.75% stake from Altech Advanced Materials AG (AAM). With this transaction, Altech will control 75% of the joint venture, while Fraunhofer retains a 25% share. This development positions ATC to accelerate the development and commercialisation efforts of this project.
ATC shares were trading at AUD 0.033 per share at the time of writing on 27 June 2025.
