Tesla, BYD, and CATL are the three largest suppliers of battery energy storage systems in Great Britain. Our high-performance modular BESS fully integrates. . An overview of the most active and influential companies in the UK storage sector is provided by this data-driven list, which is updated in real time. SSE Renewables is a leading renewable energy company specializing in onshore wind, offshore wind, hydro, solar and battery technologies, with a. . Developer of long-duration storage systems Meet Richard that works here Highview Power is a designer and developer of true long duration energy storage solutions for utilities and distributed power systems. 74 MW in 2024, set to grow to 28.