RIIO-T1 price control

Publications and updates

  • Published: 20th Mar 2019
  • Decisions
  • 1 Associated documents
This letter sets out the Authority's decision in relation to an SF6 Exceptional Event claim received from National Grid Electricity Transmission in relation to SF6 leakage on its network at Connah's Quay on 23 February 2018.

  • Published: 20th Mar 2019
  • Decisions
  • 1 Associated documents
This letter sets out the Authority's decision in relation to an SF6 Exceptional Event claim received from National Grid Electricity Transmission in relation to SF6 leakage on its network at Walpole on 24 August 2016.

  • Published: 8th Mar 2019
  • Closing: 5th Apr 2019
  • Consultations and responses
  • 12 Associated documents
Notice relating to a modified set of electricity transmission regulatory instructions and guidance (RIGs) and reporting templates for 2018-19 reporting year.

  • Published: 8th Mar 2019
  • Charts and data, Reports and plans
  • 2 Associated documents
Report showing the performance of the electricity transmission network companies in 2017-18, the fifth year of the current RIIO-ET1 price control.

  • Published: 18th Dec 2018
  • Decisions, Guidance
  • 2 Associated documents
We issued a notice on 3 November 2018, proposing changes to the Stakeholder Engagement Incentive (SEI) guidance. We have considered the responses we received and this direction formally issues the SEI Guidance document.

  • Published: 6th Dec 2018
  • Decisions
  • 3 Associated documents
Ofgem decision on the common methodology to implement the Network Output Measures (NOMs) incentive mechanism.

  • Published: 23rd Nov 2018
  • Decisions
  • 3 Associated documents
This letter sets out our decision on the gas and electricity Transmission Operators and Gas Distribution Network Operators Stakeholder Engagement Incentive for 2017-18.

  • Published: 2nd Nov 2018
  • Decisions
  • 2 Associated documents
Ofgem has published its determination and notice of licence modification on National Grid Electricity Transmission’s Dorset AONB mitigation project under the RIIO1 provisions for enhancing pre-existing infrastructure.

  • Published: 10th Oct 2018
  • Decisions
  • 1 Associated documents
This letter sets out the outcome of our assessment of NGET’s request to recover costs in relation to the North London Reinforcement Project.

  • Published: 28th Sep 2018
  • Decisions
  • 7 Associated documents
Ofgem has published its decisions on the RIIO-T1 and RIIO-GD1 price control reopener applications submitted by network operators in May 2018.

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