S4 Energy is headquartered in Rotterdam, Netherlands. Our team has extensive international experience across multiple disciplines including engineering, consultancy, finance, science, and manufacturing.
Through relentless pursuit of cutting-edge engineering, we are delivering the most effective energy storage solutions for all stakeholders – power producers, grid operators and the consumers.
Energy storage is our expertise. Each project is executed with extensive understanding, optimal resource utilisation and seamless integration.
Dedicated to environmental stewardship, taking care of the planet, we actively promote the energy transition required to secure the Earth’s future. We are responsible for safeguarding the environment for generations to come.
We firmly uphold the utmost ethical standards, emphasising transparency and professionalism within the team. We continually learn from our experiences, making decisions which uphold our values and foster a sense of pride within our organisation.
Development of KINEXT begins and basic patents are applied for.
S4 Energy is established as an independent company.
Full scale prototype is installed at the premises of DNV.
Interactions between systems and services can now be managed.
Approval for the system to be installed in Dutch national grid.
Almelo production facility of KINEXT flywheels starts up.
Hybrid KINEXT and battery system of 9 MW /
7.2 MWh in Almelo.
Heerhugowaard facility with 13 MW / 9 MWh hybrid energy storage system.
Castleton Commodities International LLC becomes major shareholder of S4 Energy.
Peak power delivered to the crane; no larger grid connection needed.