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This past week, the Energy Storage Summit 2025 in London gathered industry leaders to explore the future of energy storage in Europe. As Europe accelerates its push toward decarbonization, energy storage plays a key role in supporting renewable energy adoption. Discussions focused on both technological advancements enabling more sustainable storage solutions and the challenges the industry must address to meet growing demand. Here are some of the main takeaways I found from the event.
Energy storage is becoming more critical as Europe works to decarbonize its power sector. With growing investments in renewable energy, including wind and solar, energy storage addresses the intermittent nature of these sources. It ensures that excess power can be captured during high output periods (windy and/or sunny days) and used when demand spikes, reducing reliance on fossil fuels for filling gaps during low-output periods and enhancing overall grid stability.
Industry experts discussed the need to scale energy storage across the continent and some challenges that come with this. Without effective storage, much clean energy would go to waste, limiting Europe's ability to fully utilize its renewable resources.
One thing I’ve noticed in the energy storage market is the growing trend of co-located BESS, where storage systems are integrated with renewable assets like solar and wind farms. This strategy optimizes the grid, enabling the storage of excess energy generated during high-output periods. Co-location stabilizes the grid and ensures renewable power is available when the wind isn’t blowing, or the sun isn’t shining.
This approach optimizes the grid by storing excess energy from high-output periods, ensuring renewable power is available when needed. During the Dunkelflaute* in January 2025, when wind and solar generation was low, BESS played an indispensable role discharging stored energy to meet demand, stabilizing the grid and reducing reliance on fossil fuels.
The UK, Spain, and Germany are seen as Europe's leading markets for energy storage, driven by high renewable energy potential and supportive policy environments. These regions will require rapid storage adoption and expansion to meet growing demand and address grid stability challenges.
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A major discussion at the summit centered on optimizing the performance and profitability of Battery Energy Storage Systems (BESS). Dr. Kai-Philipp Kairies, CEO of ACCURE, was part of a related panel and highlighted the importance of using advanced tools and real-time data analytics to manage BESS effectively. Real-time monitoring and predictive analytics are vital for operators to make informed decisions, ensuring peace of mind that their portfolio is in safe hands.
Accurate State of Charge (SOC) estimation was expectedly a hot topic at the event, as it is one of the main drivers for maintaining system performance. Better data and advanced cloud-based analytics can drastically enhance accuracy, unlocking greater efficiency and profitability. Panelists agreed that by improving the accuracy of SOC calculations, batteries can be pushed further. Correcting SOC inaccuracies allows asset owners and operators to reduce their error margins, sweat the battery for more profit and it helps make the world just a little bit more sustainable.
Building trust with customers was emphasized as key to successful partnerships. Strong relationships between asset owners and technology providers help maximize the value of energy storage systems while minimizing risks.
As the demand for long-duration storage rises, experts discussed whether lithium-ion batteries could meet these needs. Traditionally used for short-duration storage, advancements in lithium-ion technology have increased their potential to support longer durations, particularly in markets like the UK. Although other technologies, such as flow batteries and solid-state batteries, are being developed, lithium-ion remains a strong contender due to its declining costs and ongoing improvements.
Lithium-ion batteries may not meet all long-duration needs, but they are expected to play a significant role in meeting future storage demands as technological advancements extend their duration and efficiency.
Procurement of energy storage solutions, particularly long-duration systems, remains a significant challenge, especially in the UK. Experts discussed the complexities of sourcing and deploying storage solutions across Europe. Securing raw materials like lithium, cobalt, and nickel for battery production is a major challenge, with supply chains under pressure as demand grows. These constraints can lead to quality issues, affecting battery performance and longevity. Innovation in material sourcing and recycling will be essential to ensure a stable, high-quality supply.
Industry experts also highlighted the need for streamlined procurement processes to accelerate storage deployment. As the market grows, policies must support more efficient processes for developers and investors where rapid deployment is necessary to meet sustainability goals.
The 10th edition of Energy Storage Summit highlighted the pivotal role energy storage will play in Europe’s energy future. As renewable energy adoption continues to grow, storage solutions will be essential for ensuring clean energy is utilized effectively and reliably. Both short- and long-duration storage will be key to achieving decarbonization goals, while innovations in data analytics will help to maximize the performance and safety of the growing energy storage market.
With the right technology and partnerships, opportunities to enhance the efficiency and profitability of energy storage systems are boundless, allowing businesses to meet the growing demand for clean, reliable energy storage solutions.
*Dunkelflaute: A time of low wind and solar energy generation.
ACCURE helps companies reduce risk, improve performance, and maximize the business value of battery energy storage. Our predictive analytics solution simplifies the complexity of battery data to make batteries safer, more reliable, and more sustainable. By combining cutting-edge artificial intelligence with deep expert knowledge of batteries, we bring a new level of clarity to energy storage. Today, we support customers worldwide, helping optimize the performance and safety of their battery systems. Visit us at accure.net.
Glen Faloon brings a wealth of experience in B2B sales and SaaS solutions to the table. After making the exciting shift into the renewable energy sector a few years ago, he's been laser-focused on optimizing Battery Energy Storage Systems (BESS). Now, as the UK&I Account Manager at ACCURE, Glen is dedicated to helping clients boost profitability and minimize risks associated with their BESS assets. With a deep passion for cutting-edge technology and sustainable energy solutions, he's all in when it comes to delivering data-driven insights that foster greater confidence and operational efficiency.