Powering the future

S4 Energy is headquartered in Rotterdam, Netherlands. Our team has extensive international experience across multiple disciplines including engineering, consultancy, finance, science, and manufacturing.

Our Team

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Chief Executive Officer

Bob Bouhuijs

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Chief Commercial Officer

Dominique Becker Hoff

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Chief Financial Officer

Femke de Vries

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Project developer

Jeff Kartanegara

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Project Manager - Mechanical systems

Marco Brombacher

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Sales & Marketing

Karin Husmann

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Operations & Maintenance

Arno Leerkes

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HR Advisor

Rachel Kiers

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Financial Analyst

Margarida Carvalho

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Electrical/software engineer

Bram Journée

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Process Engineer

Yigen Huang

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Technician

Antonio Sorrentino

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Operations Supervisor - S4 Manufacturing

Jeroen Kroese

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Project Manager

Sjoerd Verduijn

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Mechanical Engineer

Jordy Schuijlenburg

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Project Manager

Gido Wesdorp

OUR VALUES

Core Principles Fuelling Our Every Endeavour

01.

Innovation

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.

02.

Expertise

Energy storage is our expertise. Each project is executed with extensive understanding, optimal resource utilisation and seamless integration.

03.

Stewardship

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.

04.

Professionalism

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.

S4 Energy - about us

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Our History

Research and development begin

Development of KINEXT begins and basic patents are applied for.

2010

S4 Energy established

S4 Energy is established as an independent company.

2012

First KINEXT flywheel installed

Full scale prototype is installed at the premises of DNV.

2014

Launch of energy management software

Interactions between systems and services can now be managed.

2015

TenneT (Dutch TSO) Certification

Approval for the system to be installed in Dutch national grid.

2017

S4 Manufacturing opens

Almelo production facility of KINEXT flywheels starts up.

2017

First energy installation operational

Hybrid KINEXT and battery system of 9 MW /
7.2 MWh in Almelo.

2018

Second energy installation operational

Heerhugowaard facility with 13 MW / 9 MWh hybrid energy storage system.

2021

CCI invests in S4 Energy

Castleton Commodities International LLC becomes major shareholder of S4 Energy.

2023

Harbor crane electrified

Peak power delivered to the crane; no larger grid connection needed.

2023

Our

Partners and Investors

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INVESTOR

Castleton Commodities
International LLC

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PARTNER

Machinefabriek Boessenkool

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PARTNER

Energiefonds Overijssel

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PARTNER

Participatiefonds Duurzame Economie Noord-Holland

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PARTNER

Port of Rotterdam

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PARTNER

Municipality of Rotterdam

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PARTNER

Vicoma Consultancy and Engineering

PORTFOLIO

Our Most Recent Projects

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