To ensure grid reliability, it is essential to maintain a stable electric frequency of 50Hz or 60Hz. This requires continuous monitoring and the ability to match supply and demand at all times. Our storage solutions give grid operators more options and help them to efficiently manage existing infrastructure.

Frequency regulation
S4 Energy’s decentralized storage solutions offer efficient, reliable and sustainable frequency regulation with a fast response time. Our modular approach ensures highly attractive performance attributes, low variable operating costs, and can be configured to have zero emissions.

Angular stability control
Transmission line capacity can be severely reduced by angular instability - a low-frequency undamped power fluctuation traveling through the grid. S4 Energy storage solutions enable fast injections of real and reactive power at a frequency similar to that of the oscillations, in order to restore capacity and increase grid stability.