Renewable energy from wind and solar is not always generated when it is needed. There are times when the wind does not blow or the sun does not shine, making renewable power inherently variable. This variability can strain the electricity grid: at times, production exceeds demand and energy is wasted; at other times, supply falls short and demand cannot be met, forcing reliance on fossil fuels.

Battery energy storage addresses this challenge by capturing excess energy when supply is high and releasing it when demand peaks. In doing so, battery systems stabilise the grid and ensure that renewable power is reliable and available when it is needed most.

Yes. Modern battery energy storage systems are designed with safety as a top priority. They incorporate multiple layers of protection, including continuous monitoring, advanced cooling, and automatic shutdown mechanisms, and are built and operated in line with strict international and European safety standards. With proven technology, purpose-built enclosures, and robust fire-prevention measures, battery storage is a safe and reliable solution for supporting a stable, renewable energy grid.

S4 Energy engages with local communities from the very beginning of every project. Our first point of contact is always the local municipality, which represents the community and its best interests. We then work directly with landowners—whether public or private—to ensure full alignment. We take great care to clearly explain project plans, with safety, environmental impact, and regulatory compliance at the forefront of every discussion. We organise local information briefings, actively encourage dialogue, and make ourselves approachable, accessible, and transparent throughout the process. It is important to us that local communities feel informed, heard, and involved at every step of the journey.

We are developing a growing portfolio of battery energy storage projects across Europe, with more than 20 GWh currently in our pipeline, including projects in the UK. Building on this foundation, we are actively targeting further expansion across key European markets. Further details on our projects in development can be found on our Projects page.