Rimac Energy builds integrated hardware, software, and intelligence for battery storage systems, combining power conversion and battery management into a single module. Their distributed inverter architecture delivers over 99% one‑way efficiency and can extract up to 15% more usable energy by actively balancing state‑of‑charge and state‑of‑health, while providing native redundancy that keeps racks running despite component faults.
Funding
Funding not disclosed
Founders
Product
Problem
Battery energy storage systems typically rely on separate inverters and conventional battery management, leading to conversion losses, limited usable energy, and vulnerability to component failures that can shut down entire racks.
Solution
Rimac Energy integrates power conversion directly into each battery module’s BMS, creating a distributed inverter architecture that eliminates the need for external inverters. This design achieves over 99% one-way conversion efficiency and up to 15% more usable energy through state-of-charge and state-of-health based active balancing. The architecture provides native redundancy, allowing faulty components to be bypassed without taking the whole system offline. Rimac’s platform is compatible with standard DC battery blocks, turning them into high‑performance AC systems while maintaining a compact footprint and low acoustic noise. The integrated hardware, software, and intelligence enable precise, granular control that improves round‑trip efficiency, cycle life, and overall levelized cost of storage.
Target Audience
Primary customers are utility‑scale and commercial battery energy storage operators, independent power producers, and renewable project developers seeking high‑efficiency, high‑lifetime storage solutions with minimal footprint and robust reliability.
Features
- Distributed inverter built into each battery module’s BMS, removing separate inverter hardware
- >99% one‑way power conversion efficiency at nominal load using low‑voltage switching
- Active balancing based on real‑time SoC and SoH, extracting up to 15% additional usable energy over the system’s life
- Native redundancy that isolates faults and maintains operation with minimal capacity loss
- Compatibility with off‑the‑shelf BESS modules, converting any DC block into a 3‑phase AC output
- Integrated liquid cooling delivering near‑silent operation (<60 dBA at 10 m) and a small system footprint
- High round‑trip efficiency (92%) and 12,000‑cycle lifetime, reducing levelized cost of storage