How is the UK's solar energy and battery storage sector changing?

The UK’s solar energy and battery storage sector is undergoing a rapid transformation, bolstered by ambitious climate targets and supportive policies. Solar photovoltaics (PV) capacity has rebounded since the end of feed-in tariffs, while energy storage is scaling up to enhance grid reliability.

What are the largest energy storage projects in the UK?

Listed below are the five largest energy storage projects by capacity in the UK, according to GlobalData’s power database. GlobalData uses proprietary data and analytics to provide a complete picture of the global energy storage segment. Buy the latest energy storage projects profiles here. 1. Sunnica Solar-plus-Battery Energy Storage System

Is the UK's solar and energy storage sector at an inflection point?

In conclusion, the UK’s solar and energy storage sector finds itself at an inflection point – bolstered by supportive policy, buoyant investment, and rapid tech improvements, yet challenged by infrastructure bottlenecks and the practicalities of an unprecedented build-out.

How many solar installations are there in the UK in May 2025?

There were 21,125 small-scale solar installations in the United Kingdom in May 2025, according to accreditation body MCS, which also recorded a record month for battery energy storage additions. Data for PV installations up to 50 kW show May’s installation figures were 30% higher than the same month the previous year.

What is the UK's solar capacity?

Surging capacity: The UK’s solar capacity continues to climb and is now at its highest level ever. As of late 2024, total installed solar PV capacity had reached approximately 17.6 GW (DC). Annual deployment has accelerated to around 1.2–1.3 GW of new solar each year – the fastest growth seen since subsidy cuts in 2019.

Is the battery storage pipeline growing in the UK?

This report will be launched to coincide with Clean Power Grid Conference 2025, 1 May 2025 at the IET, London. Overall though, the breakdown of the battery storage pipeline in the UK indicates a position of growth, with a large proportion of the pipeline capacity in early development, in planning and consented stages.