Exclusive Articles

Smaller, smarter, stronger: the rise of compact 5 MWh storage

Written by Negin Hashemi | Nov 19, 2025 5:46:18 AM

As Europe accelerates its transition to renewables, the need for reliable, high-density energy storage is growing fast. The latest generation of 5 MWh battery systems shows how advances in cell design, cooling and data security are redefining performance, safety and footprint across the continent.

Europe’s energy mix is changing faster than at any time in its modern history. As more wind and solar capacity connect to the grid, operators are confronted with sharp fluctuations in supply and demand. A lot of PV and wind has to be curtailed as the grid is not strong enough to transport energy away. Storage offers the solution to store and release energy when no sun is shining or wind is blowing. In fact, utilities, industrial users and developers now see large-scale battery energy storage systems (BESS) as the most practical route to balancing those peaks and troughs.

But expectations are evolving. Cost per kilowatt-hour is no longer the only measure of value. Buyers are increasingly focused on energy density, system safety, life-cycle reliability and compliance with European sourcing and data standards.

A new generation of systems

A cluster of technology providers is responding with compact, modular solutions that deliver megawatt-hour-scale capacity in a single, transportable unit.

One recent example is Exide Technologies’ Solition Mega Five, a 5 MWh lithium-iron-phosphate (LFP) system engineered to fit within a standard 20-foot container, and is coupled with an up to 5 MW Exide Skid with the ability of augmentation. Similar products emerging across the market illustrate a clear direction of travel: more energy in less space, designed for both front-of and behind-the-meter applications.

Download full article