Battery buildout in Great Britain is picking up pace. Q2 2025 saw another quarter of strong growth, longer durations, and new owners entering the market, keeping GB on track for its biggest year yet. But sustaining this momentum will be key to meeting future flexibility targets.

This report breaks down the current state of battery buildout in GB, spotlighting:

• The buildout in Q2 2025 — new capacity, sites, and market entrants
• Shifts in average duration as two-hour+ systems dominate
• The impact of these changes on revenue benchmarking for BESS in Great Britain
• What the current pipeline tells us about likely growth through 2025
• How the market is tracking against Clean Power 2030 targets

A data download of the battery energy storage project pipeline out to 2028 is available at the end of the article.

For any further information on this topic, reach out to the author - shaniyaa@modoenergy.com

Key takeaways: