RIIO-1 NIA Guidance Documents revision – additional requirements for RIIO-2 CNIA

Related links

RIIO-ED2 Final Determinations

The ‘Carry-over Network Innovation Allowance’ (the CNIA) is a licence condition included in the RIIO-2 licences which allows electricity transmission, gas transmission, and gas distribution licence holders to carry any unspent 2020-2021 RIIO-1 NIA allowance over into the first year of RIIO-2 in 2021/2022. The CNIA licence condition in the Electricity Distribution licence allows licence holders to carry forward unspent 2022/23 RIIO-ED1 NIA funds into 2023/24 (the first year of RIIO-ED2).

As this requires additional reporting guidelines we consulted on amendments to the existing RIIO-1 NIA Guidance documents to reflect this time extension.

We published Version 4 of the RIIO-1 Gas NIA Governance and Version 4 of the RIIO-1 Electricity NIA Governance on 30 March 2021, alongside track change versions of both of these documents that highlight where changes have been made.

We have now published Version 5 of the RIIO-1 Electricity Network Innovation Allowance Governance Document, alongside the modifications to the Electricity Distribution licence ahead of the start of RIIO-ED2.

Main document

[RIIO-1 Electricity Network Innovation Allowance Governance Document Version 5 [PDF, 374.90KB]

](https://www.ofgem.gov.uk/sites/default/files/2023-02/RIIO-1%20Electricity%20NIA%20Governance%20version%205%20-%20final%20clean1676549081931.pdf)

Subsidiary documents

[RIIO-1 Electricity NIA Guidance v4 [PDF, 373.20KB]

](https://www.ofgem.gov.uk/sites/default/files/docs/2021/03/2021-03-30_electricity_nia_governance_v4.pdf)

[RIIO-1 Gas NIA Guidance v4 [PDF, 366.84KB]

](https://www.ofgem.gov.uk/sites/default/files/docs/2021/03/2021-03-30_gas_nia_governance_v4_0.pdf)

[RIIO-1 Gas NIA Guidance v4 - Tracked [PDF, 371.14KB]

](https://www.ofgem.gov.uk/sites/default/files/docs/2021/03/2021-03-30_gas_nia_governance_v4_track_changes_0.pdf)

[RIIO-1 Electricity NIA Guidance v4 - Tracked [PDF, 379.97KB]

](https://www.ofgem.gov.uk/sites/default/files/docs/2021/03/2021-03-30_electricity_nia_governance_v4_track_changes.pdf)

[Version 4 RIIO-1 NIA Guidance Issues log [XLSX, 24.23KB]

](https://www.ofgem.gov.uk/sites/default/files/docs/2021/03/issues_log_-_revisions_to_nia_governance.xlsx)

[2021 Direction letter to issue Version 4 of respective RIIO-1 Gas and Electricity NIA Governance Documents [PDF, 116.87KB]

](https://www.ofgem.gov.uk/sites/default/files/docs/2021/03/ad_direction_letter_riio-1_governance_v4_mc_comments.pdf)

[RIIO-1 Electricity NIA Governance v5 Track changes [PDF, 379.21KB]

](https://www.ofgem.gov.uk/sites/default/files/2023-02/RIIO-1%20Electricity%20NIA%20Governance%20v5%20Track%20changes.pdf)

[V5 - Electricity Network Innovation Allowance Governance Document Issues log [XLSX, 46.46KB]

](https://www.ofgem.gov.uk/sites/default/files/2023-02/V5%20-%20Electricity%20Network%20Innovation%20Allowance%20Governance%20Document%20Issues%20log.xlsx)

Related links

RIIO-ED2 Final Determinations