UK energy storage battery air transport capacity restrictions

Fig 1: There is over 440 GWh of battery storage capacity in the UK pipeline including 274 GWh (61%) at the pre-planning stage. Most of the projects are in the early stages: either announced by developers, included in the TEC register, or have screening/scoping applications submitted.

The UK is at the forefront of the global transition to a low-carbon economy, with Battery Energy Storage Systems (BESS) playing a pivotal role. Driven by the increasing integration of renewable energy sources, the electrification of transport, and the need for grid stability, the demand for batteries has surged.

The UK is not alone in its drive for BESS capacity; according to energy consultants, Timera Energy, battery storage requirements for Western Europe as a whole are expected to be around 50-70GW by 2030, hence why we're also seeing record-breaking BESS deployment across the rest of Europe - with the UK very much at the forefront.

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.

Key Capacity Limits: Per Compartment Limit: The maximum energy storage capacity within a single compartment is restricted to 20kWh. 80kWh: Permitted for external, detached garages, or fire-rated garages. 40kWh: Maximum capacity for all other dwelling types. It's crucial to understand that these limits are in place to safeguard homeowners.

The Commons Business and Trade Select Committee has raised concerns that the UK has “insufficient domestic manufacturing capacity” for batteries, and the Commons Foreign Affairs Select Committee has raised concerns that “the UK is almost completely dependent on imports for critical minerals”, such as lithium, that are used in batteries.