Rimac brings ‘leading expertise in battery performance’ to ESS market; considers non-lithium technology

“High volume” production of its ESS products will start in 2025 at the Rimac Campus in Croatia, scaling to more than 10GWh of annual production, the company added.

Speaking at the Belgrade Energy Forum 2023 recently, Rimac Energy director Wasim Sarwar Dilov said: “For almost two years, we’ve been working behind the scenes to really develop stationary storage systems that are better than what we see today. The systems that we see today generally are quite expensive. The systems that we see today are not the most efficient, and they require more space than we would like.”

Rimac Group’s existing divisions are 100%-owned subsidiary Rimac Technology, which provides technology solutions to the high-end EV market, and its 55:45% JV with Porsche, Bugatti Rimac, through which it produces its own EV models.

Rimac Automobili’s Nevera model (pictured above) set 23 performance records in a single day, the company announced last week (17 May). Rimac Group is valued at over €2 billion (US$2.15 billion) after a €500 million fundraise last year.

Energy-Storage.news asked a spokesperson for the company to provide more details about its new ESS product and how it planned to compete in the space. The answers provided are below.

Energy-Storage.news: Could you provide us a brief overview of the specs of the ESS products you plan to launch?

Rimac Energy: Later this year, we will disclose the technology and detailed specifications of our products. Currently, we can reveal that our solution is highly scalable, accommodating systems with capacities ranging from 770kWh to multiple GWh. It is designed to be adaptable, catering to the individual requirements of our customers with whom we maintain a close collaborative relationship.

Furthermore, our novel electrical architecture enables our products to reduce efficiency losses by up to 50%, while decreasing the system footprint by 40% compared to state-of-the-art systems. We also anticipate an improvement in system lifetime.

How does Rimac’s background in high-performance sports cars lend itself well to competing in the ESS space?

Through our high-performance automotive projects, we have acquired leading expertise in extracting maximal performance from a given set of battery cells.

We firmly believe that the crucial factor for achieving an efficient Energy Storage System (ESS) lies in designing the system as a fully integrated entity, rather than piecing together off-the-shelf battery modules, BMKS, inverters, and other components.

Leveraging this expertise and design philosophy, we have developed an innovative electrical architecture for stationary ESS, which yields the aforementioned advantages.

Additionally, we capitalise on our in-house developed battery management system (BMS) and advanced analytics, as well as design-to-cost and industrialisation expertise gained from high-volume automotive tier 1 projects.

Could you clarify whether you will produce your own lithium-ion battery cells or whether you procure them from larger OEMs?

We will source our battery cells from established cell manufacturers, prioritising a local and sustainable supply chain. Our selection of battery chemistries is carefully balanced to ensure optimal cost-effectiveness, efficiency, longevity, and a secure supply. Additionally, as our systems are adaptable to various battery cell chemistries, our product portfolio will encompass lithium-free cell options as well.

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