RIIO-2 Electricity Transmission: Annual Report 2023 to 2024

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The RIIO-2 Electricity Transmission: Annual Report 2023 to 2024 gives an overview of onshore electricity transmission owner (TO) businesses' output delivery and financial performance under RIIO-2, the current RIIO price control period.  

The report summarises TO performance based on the information submitted in the 2023 to 2024 reporting year. 

Main document

[RIIO-2 Electricity Transmission: Annual Report 2023 to 2024 [PDF, 342.72KB]

](https://www.ofgem.gov.uk/sites/default/files/2025-04/RIIO-2%20Electricity%20Transmission%20Annual%20Report%202023%20to%202024.pdf)

Subsidiary documents

[RIIO-2 Electricity Transmission: Annual Report 2023 to 2024 appendix [PDF, 1.13MB]

](https://www.ofgem.gov.uk/sites/default/files/2025-04/RIIO-2%20Electricity%20Transmission%20Annual%20Report%202023%20to%202024%20-%20appendix.pdf)

[RIIO-2 Electricity Transmission: Annual Report 2023 to 2024 supplementary data file [XLSX, 252.14KB]

](https://www.ofgem.gov.uk/sites/default/files/2025-04/RIIO-2%20Electricity%20Transmission%20Annual%20Report%202023%20to%202024%20-%20supplementary%20data%20file.xlsx)

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