RIIO-ET1 Annual Report 2020-21

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This report summarises the delivery and financial performance of onshore electricity transmission owner (TO) businesses under the current RIIO price control period (RIIO-ET1) in the following areas:

1. Achievement of annual output targets and performance in 2020-21;
2. Activity under the innovation funding streams in 2020-21;
3. The current level of delivery against baseline outputs in response to changing needs which automatically adjust the cost allowances (known as ‘volume driver’ mechanisms);
4. The TO’s current costs incurred against the total allowance across RIIO-ET1 and the current Rate of Regulatory Return on Equity (RoRE) range.

Main document

[RIIO-ET1 Annual Report 2020-21 [PDF, 616.24KB]

](https://www.ofgem.gov.uk/sites/default/files/2022-09/RIIO-ET1%20Annual%20Report%202020-21.pdf)

Subsidiary documents

[RIIO-ET1 Supplementary Data File 2020-21 [XLSX, 737.81KB]

](https://www.ofgem.gov.uk/sites/default/files/2022-09/RIIO-ET1%20Supplementary%20Data%20File%202020-21.xlsx)

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