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Written question asked by Lord Wigley (Plaid Cymru) on Monday, 8 September 2025, in the House of Lords. It was due for an answer on Monday, 22 September 2025. It was answered by Lord Wilson of Sedgefield (Labour) on Monday, 22 September 2025 on behalf of the Department for Energy Security and Net Zero.

Hydroelectric Power: Storage

Question

To ask His Majesty's Government what is the existing energy storage capacity of (1) hydroelectric pump storage facilities at full capacity, (2) battery storage facilities, and (3) other methods of electricity storage; and what are the target figures for expanding each category in the next 10 years.

Answer

Power capacity statistics for energy storage capacity in the UK can be found in the annually published Digest of UK Energy Statistics (DUKES), in particular Table 5.16.[1] The government’s Clean Power Action Plan[2] sets out ranges for the energy storage capacity we could need by 2030, as informed by advice from the National Energy System Operator (NESO). While there are no fixed targets set for 2035, NESO regularly publishes Future Energy Scenarios which set out pathways to Net Zero in 2050 and include energy storage capacity


[1] https://www.gov.uk/government/statistics/electricity-chapter-5-digest-of-united-kingdom-energy-statistics-dukes

[2] https://www.gov.uk/government/publications/clean-power-2030-action-plan

Secondary information

Type
Written question
Reference
HL10328
Session
2024-26
Subjects
Storage Hydroelectric power Batteries
Contains statistics
Yes
Link
View this Written question on www.parliament.uk