Transmission Investment for Renewable Generation

Transmission Investment for Renewable Generation  (TIRG) is a mechanism designed to fund electricity transmission projects that are specific to connecting renewable generation. To minimise delays, funding of the TIRG projects operates outside of the main price control process.

We put the TIRG mechanism in place in 2004 to provide the three transmission licensees with revenue allowances to connect renewable generation that was not forecast at the time the relevant transmission price controls were set. It includes expenditure allowances for specific reinforcement projects for each of the transmission licensees.

TIRG comprises four projects:

  1. Beauly Denny, a project jointly delivered by Scottish Hydro Electric Transmission Plc (SHE Transmission) and SP Transmission Limited (SPT);
  2. Sloy, a joint project between SHE Transmission and SPT;
  3. South West Scotland, a project delivered by SPT; and
  4. the Anglo Scottish Interconnector, a joint project between SPT and National Grid Electricity Transmission.

 

 

 

Publications and updates

  • Published: 30th Jan 2017
  • Decisions
  • 1 Associated documents
Following consultation, we have approved £27.8 mllion of the £58.8 million additional funding that SHE Transmission requested for the Beauly-Denny project.

  • Published: 11th Nov 2016
  • Closed: 9th Dec 2016
  • Consultations and responses
  • 4 Associated documents
We’re consulting on approving £26.9m of the £62.1m additional funding SHE Transmission has requested for the Beauly-Denny project.

  • Published: 30th Nov 2015
  • Decisions
  • 1 Associated documents
We have determined that the Opening Asset Value for National Grid Electricity Transmission’s part of the England-Scotland Interconnector project is £105.983 million, as set out in its licence.

  • Published: 21st Oct 2015
  • Decisions
  • 1 Associated documents
This decision sets out that the Opening Asset value of Scottish Power Transmission’s (SPT) B5 boundary TIRG project will remain at £11.209 million, the level set out in the licence. It also determines that SPT entered the post-construction period 1 year...

  • Published: 20th Oct 2015
  • Closed: 17th Nov 2015
  • Consultations and responses
  • 5 Associated documents
This consultation is on our view that the Opening Asset value of National Grid Electricity Transmission’s opening asset value for project ‘England-Scotland Interconnector’ should remain at £105.983 million, the level set out in the licence.

  • Published: 29th Jul 2015
  • Open letters and correspondence
  • 1 Associated documents
This letter informs stakeholders of the process we intend to follow to reach a decision on the post-construction review of SHE Transmission’s Beauly-Denny project.

  • Published: 13th Jul 2015
  • Decisions
  • 1 Associated documents
This decision sets out that the revenue Scottish Power Transmission receives for the 5 years following construction remains at £19.366 million, which is the level set by our determination to provide additional funding for the project in November 2010.

  • Published: 13th Jul 2015
  • Closed: 10th Aug 2015
  • Consultations and responses, Decisions
  • 5 Associated documents
This consultation is on our view that the Opening Asset Value of SP Transmission’s (SPT) B5 boundary TIRG project should remain at £11.209m, that SPT entered the post-construction period 1 year early, and our favoured option to address this.

  • Published: 4th Mar 2015
  • Decisions
  • 1 Associated documents
This decision confirms that the Opening Asset Value for SP Transmission’s completed England-Scotland TIRG project will be £76.7 million. This is the level set by SP Transmission’s licence.

  • Published: 23rd Jan 2015
  • Closed: 20th Feb 2015
  • Consultations and responses
  • 3 Associated documents
This consultation is on our view that the revenue Scottish Power Transmission receives for the five years following construction remain at £19.366 million.

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