An important building block in many of our solutions is our proprietary KINEXT technology, which represents a huge step forward in energy storage. KINEXT units can store large amounts of energy at very high efficiency rates (92%) with an exceptionally short response time (within milliseconds) and a very high power-to-energy ratio (up to 100).

KINEXT units contain a flywheel with an exceptionally high mass (5,000 kg) and large diameter, which spins relatively slowly (1,800 rpm) and reaches a maximum speed of around 950 km/h. The resulting efficiency enables storing energy with very low stand-by losses and long idle times. KINEXT also offers a long lifetime, low operating costs and easy maintenance.

Combined with S4 Energy’s proprietary software, KINEXT units offer great flexibility. The power-to-energy ratio can be adjusted per unit, tailoring it to a client’s specific needs. If necessary, a KINEXT unit can provide more than 1 MW of power. KINEXT units can be used as standalone storage systems or as part of a larger set-up, in which one or more KINEXT units work together with other storage technology such as battery systems.

Download the KINEXT specifications (PDF) for more information.

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Optimize (sustainable) energy generation processes
Improve grid frequency control and reactive power
Increase efficiency with decentralized load balancing
Benefit from peak shaving and advanced UPS applications