Rimac Energy, ENNA to establish a partnership for the production of renewable energy, storage

Rimac Energy, ENNA to establish a partnership for the production of renewable energy, storage


Croatian companies ENNA and Rimac Energy established a strategic partnership for the production and storage of renewable energy. The centerpiece is SineStack, an innovative battery energy storage system developed by Rimac Energy.

The partnership was announced at Birmingham Tech Week, the UK’s most important regional technology exhibition. At the event, Rimac Energy presented SineStack, its most advanced battery energy storage system (BESS), ENNA said.

ENNA develops solar and geothermal projects and operates in transportation, logistics, and food production and distribution. Rimac Energy is a brand of Rimac Technology owned by Rimac Group. It specializes in designing, developing, and manufacturing innovative energy storage (ESS) solutions in Europe.

The companies plan to launch initial pilot projects in 2024

ENNA said it will harness the potential of renewable resources, including wind and solar power, while Rimac Energy is set to store and generate power through the ESS.

According to Rimac Energy, both companies intend to deploy SineStacks to ENNA’s renewable energy investments and beyond.

The first pilot project will be delivered to ENNA sites in 2024, enabling the partnership to improve plans, Rimac Energy said.

Companies can also deploy up to 1 GW of energy storage systems

According to ENNA, they are committed to pursuing additional projects, including the deployment of energy storage systems of up to 1 GW in total.

SineStack has innovations that lower the levelized cost of storage, increase round-trip efficiency and significantly improve energy stored per square meter, Rimac Energy emphasized.

The company claimed that the solution enables the life of the system up to 12,000 cycles and an efficiency of more than 92% of the round trip and draws all the energy from each cell, reducing the energy that cannot be reached during operation.

The integrated power conversion system also allows customers to add 790 kWh blocks at a time without the need for a change of converter or booster.

SineStack (photo: Rimac Energy)

SineStack is pushing the boundaries of what grid-connected batteries can offer customers

Zoran Milisa, CEO of ENNA Opskrba, said that SineStack introduces the next generation of energy storage systems.

“We could not wish for a better partner to achieve our shared ambition of sustainability and pioneering the development of energy storage solutions in key markets in Southeast Europe,” he emphasized.

Sarwar Dilov: We can’t wait to see SineStack in the hands of customers across Europe

According to Wasim Sarwar Dilov, CEO of Rimac Energy, SineStack pushes the boundaries of what grid-connected batteries can offer customers.

“We can’t wait to see SineStack in the hands of customers across Europe, and we’re ramping up our European production to meet demand,” he said.


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