S4 Energy - Who and where

Our solution​

Why ​
We want to contribute to an independent and sustainable energy system, as a foundation for a peaceful, durable future for next generations.​​

How ​
We Maximize grid stability through development, realization and operation of large-scale energy storage solutions.
​​
What ​
We aspire to become THE flexibility provider for continental Europe

Who and Where

Backed by Castleton Commodities International (CCI), a leading global energy commodities merchant and infrastructure asset investor, S4 Energy is poised for significant growth across Europe.

S4 Energy is at the forefront of the rapidly evolving energy sector, specializing in large-scale Battery Energy Storage Systems (BESS). These systems are key to stabilizing the grid and enabling the seamless integration of renewable energy sources like wind and solar.

Our solutions enhance grid stability, reduce energy volatility, and allow energy arbitrage—buying electricity at low prices and selling during peak demand.

Read more about What We Do.

S4 Energy - Machinery in warehouse.
60
MWh of
operational projects
1050
MWh pipeline in
development by 2028
5285
CO2 tonnes saved
4
Live projects

Our process

Driving the process from origination to operation

Originate

Assessing potential sites, resources, and market opportunities

Acquire

Obtaining necessary permits, land or existing facilities required

Finance

Securing the funding required to develop and construct the site

Build

Construction including the battery systems, inverters, and monitoring equipment

Operate

Day to day management, maintenance, and power optimisation
read more about our process

Articles

What's new with
S4 Energy

Testimonials

What our partners say

When I wanted to make my business more sustainable and was looking for a way to heat my greenhouses without CO2 emissions, I made the choice to partner with S4 Energy. In S4 Energy, I found the team to develop the plan from concept to reality. S4 Energy has completely taken care of everything for me, and soon there will be an energy storage installation here that helps reduce grid congestion and heats my greenhouses!

Kees Hoogendoorn
Owner, Tuinderij Hoogendoorn

As an energy producer and supplier, we understand the importance of having flexibility in the electric grid, especially in today's context. The importance is only set to increase in the future. We trade the capacity of S4 Energy's current energy storage systems, which has bolstered our portfolio with a substantial share of flexible capacity.

Fredrik Troost
Senior Structurer, Eneco Energy Trade