altec battery (ASX:ATC) has signed a second offtake agreement for the CERENERGY GridPack Battery Energy Storage System, marking a significant step in its commercialization efforts. The agreement is signed with Referenzkraftwerk Lausitz GmbH (RefLau), a joint venture between German renewable energy companies Enertrag SE and Energiequelle GmbH.

This follows the first offtake agreement announced in September between Artek and Zweckwerband Industriepark Schwarze-Pumpe, which oversees the Schwarze-Pumpe industrial park.

Under the terms of the agreement, RefLau will purchase 30MWh of CERENERGY energy storage equipment in the first year of production, increasing to 32MWh per year for the following four years. Deliveries are scheduled to begin at the end of 2026, following commissioning of Altec’s production plant in Germany and RefLau’s Lausitz reference power plant.

CERENERGY GridPack utilizes sodium chloride solid-state battery technology co-developed with Germany’s Fraunhofer IKTS. Unlike traditional lithium-ion batteries, CERENERGY batteries are safer, fire-resistant, and manufactured without lithium, cobalt, or copper, reducing exposure to volatile raw material markets. The technology’s durability and ability to operate in extreme environments make it ideal for renewable energy applications.

Altech is headquartered in Perth, Australia and focuses on advanced battery technologies and materials. The company’s CERENERGY batteries are aimed at grid energy storage, while the Silumina Anodes project is targeted at the electric vehicle market. Artek plans to establish a 120MWh CERENERGY production facility in Saxony, Germany, and is developing an 8,000 tonne per year Silmina anode plant in the same region.

Iggy Tan, Managing Director of Altech Batteries, said: “This second Letter of Intent means that the first two years of production are fully allocated, establishing CERENERGY as the standard for safe and sustainable energy storage. We are well on our way to doing so.”

Click here to watch Altech CFO Martin Stein’s recent in-depth presentation on the ‘sip & learn’ webinar.