Publications library: Electricity transmission networks

This library contains links to all of our publication items related to electricity transmission networks. The default setting lists all items published this year, but you can select earlier years and also filter by a specific information type using the fields at the top of the table. To keep your selection, right-click on a result of interest and open in a new tab.

To view full lists of consultations and investigations arranged by status (upcoming, open, closed and so on) please visit our dedicated sections for Consultations and Investigations.

DateTitleInformation type(s)Main documentSubscribe
16/08/2017Statutory Consultation to modify Special Condition 6F (Baseline Generation Connection Outputs and Generation Corrections volume driver) (“SpC 6F”) of Scottish Hydro Electric Transmission plc’s (“SHET”) electricity transmission licence
  • Consultations and responses
Consultation Letter SHE SpC 6FNotify me
04/08/2017Our strategy for regulating the future energy system
  • Reports and plans
Our strategy for regulating the future energy system
04/08/2017Modifications to the ET1 & GTD1 PCFMs to account for the London medium pressure refund and the National Grid voluntary allowance deferral
  • Decisions
Decision to modify PCFMs for London medium pressure refund and National Grid voluntary allowance deferral
04/08/2017RIIO-ET1 Financial Model following NGET Deferral
  • Charts and data
ET1 PCFM with NGET deferral
04/08/2017Charging Futures Forum
  • Decisions
  • Open letters and correspondence
Charging Futures Forum launch letter
04/08/2017Targeted Charging Review - Significant Code Review launch
  • Decisions
  • Open letters and correspondence
TCR SCR launch letter
04/08/2017Ofgem’s new strategy for regulating the future energy system
  • Press releases
03/08/2017Ofgem announces bidder shortlist for links to the Galloper and Walney Extension offshore wind farms
  • Press releases
03/08/2017Future Arrangements for the Electricity System Operator: Response to Consultation on SO Separation
  • Decisions
  • Reports and plans
Future Arrangements for the Electricity System Operator - Response to Consultation on SO Separation
03/08/2017Ofgem confirms plans for greater separation of National Grid’s electricity system operator role
  • Press releases
31/07/2017Great Britain and Northern Ireland Regulatory Authorities Reports 2017
  • Reports and plans
Great Britain and Northern Ireland Regulatory Authorities Reports 2017
31/07/2017Re-thinking the energy system
  • News and blogs
28/07/2017Consultation on removing provisions relating to Supplemental Balancing Reserve and Demand Side Balancing Reserve from National Grid Electricity Transmission plc’s licence
  • Consultations and responses
  • Open letters and correspondence
Consultation on removing the provisions relating to Supplemental Balancing Reserve and Demand Side Balancing Reserve from National Grid Electricity Transmission plc (‘NGET’)’s licenceNotify me
28/07/2017Direction to make modifications to the Pensions Regulatory Instructions and Guidance for RIIO Network Operator Licensees
  • Decisions
27/07/2017UK Link and the proposed Central Switching Service
  • Consultations and responses
UK Link and the proposed Central Switching ServiceNotify me
27/07/2017Update on our initial consultation on implementing the CMA's recommendations for industry code governance: Responses summary and next steps
  • Open letters and correspondence
Update on the implementation of the Code Governance Remedies
26/07/2017CMP282 ‘The effect negative demand has on zonal locational demand tariiffs’ - Response to urgency request
  • Decisions
CUSC Modifications Panel views on Urgency for CMP282
24/07/2017Offshore Transmission: Updated Guidance for Cost Assessment
  • Guidance
Updated Guidance for Cost Assessment
24/07/2017Independent aggregators and access to the energy market – Ofgem’s view
  • Guidance
Ofgem's views on the design of arrangements to accommodate independent aggregators in energy markets
24/07/2017Plan launched to unlock smart energy system fit for the future
  • Press releases
24/07/2017Upgrading our Energy System – smart systems and flexibility plan
  • Decisions
Upgrading our Energy System - Smart Systems and Flexibility Plan
20/07/2017Networks face tougher price controls at RIIO2
  • News and blogs
20/07/2017Decision on 2017 Low Carbon Networks Fund and Network Innovation Competition Successful Delivery Reward applications
  • Decisions
Decision on 2017 Low Carbon Networks Fund and Network Innovation Competition Successful Delivery Reward applications
18/07/2017Version 3.0 of the Network Innovation Allowance governance documents
  • Decisions
Decision on version 3.0 of the Network Innovation Allowance governance documents
18/07/2017Direction notice of modification to the network licences to curtail the recovery of Bid Preparation Costs from 1 April 2018
  • Decisions
17/07/2017Decision on the Final Project Assessment of the NSL interconnector to Norway
  • Decisions
Decision on the Final Project Assessment of the NSL interconnector
14/07/2017Update on our assessment of the North West Coast Connections project
  • Decisions
NWCC Open Letter July 2017
14/07/2017Electricity NIC Full Submission guidance and spreadsheet 2017
  • Guidance
NIC Guidance for completing Full Submission
12/07/2017Energy networks should prepare for tougher price controls
  • Press releases
12/07/2017Open letter on the RIIO-2 Framework
  • Open letters and correspondence
Open letter on the RIIO-2 Framework
11/07/2017Future Arrangements for the Electricity System Operator: Working Paper on the Future Regulatory Framework
  • Guidance
  • Reports and plans
Future Arrangements for the Electricity System Operator: Working Paper on the Future Regulatory Framework
07/07/2017Notification of the Incentive on Connections Engagement Consultation on the distribution network operators’ 2017 submissions
  • Consultations and responses
05/07/2017Dermot Nolan's speech at The Future Consumer event
  • Agendas, minutes and presentations
Dermot Nolan's speech at The Future Consumer Event
04/07/2017Update on regulatory sandbox
  • Open letters and correspondence
Update on regulatory sandbox - Open Letter
04/07/2017Statutory Consultation to modify price control financial models to account for the London medium pressure refund and the National Grid voluntary allowance deferral
  • Consultations and responses
Statutory Consultation to modify price control financial models to account for the London medium pressure refund and the National Grid voluntary allowance deferral
04/07/2017Ofgem reduces allowances for Cadent’s gas distribution price control
  • Press releases
04/07/2017MPR parallel work decision
  • Decisions
MPR parallel work decision
03/07/2017Ofgem data: Upcoming release calendar
  • Charts and data
Ofgem data: Upcoming release calendar
03/07/2017Infographic: The energy network
  • Charts and data
Infographic: The energy network
30/06/2017Version 3.0 of the Network Innovation Competition governance documents
  • Decisions
Decision on version 3.0 of the Network Innovation Competition governance documents
30/06/2017Direction notice of modification to the network licences for the network innovation strategy
  • Consultations and responses
29/06/2017Incentive on Connections Engagement Consultation on the distribution network operators’ 2017 submissions
  • Consultations and responses
Open letter consultation on the Incentive on Connections Engagement: Looking Back Reports 2016-17 and Looking Forward Reports 2017-18
28/06/2017Modification of the financial instruments as defined in the special conditions held by Network Operators Licensees
  • Decisions
27/06/2017Update on extending competition in transmission
  • Open letters and correspondence
Update on Extending Competition in Transmission
26/06/2017Notice to modify the Regulatory Instructions and Guidance held by Network Operators
  • Consultations and responses
23/06/2017Stakeholder Engagement Panel Members 2016-17
  • Guidance
22/06/2017Embedded Benefits: Decision on industry proposals P348 and P349
  • Decisions
Decision on industry proposals P348 and P349: ‘Provision of gross BM Unit data for TNUoS charging’ (P348) and ‘Facilitating Embedded Generation Triad Avoidance Standstill’ (P349)
22/06/2017Embedded Benefits: Decision on industry proposals CMP269 and CMP270
  • Decisions
Decision on industry proposals CMP269: Potential consequential changes to the CUSC as a result of CMP264; and CMP270: Potential consequential changes to the CUSC as a result of CMP265
22/06/2017Embedded Benefits: Impact Assessment and Decision on industry proposals (CMP264 and CMP265) to change electricity transmission charging arrangements for Embedded Generators
  • Decisions
Impact Assessment and Decision on industry proposals (CMP264 and CMP265) to change electricity transmission charging arrangements for Embedded Generators
20/06/2017Ofgem decides to lower payments to embedded generators to protect customers
  • Press releases
20/06/2017Decision on industry proposals (CMP264 and CMP265) to change electricity transmission charging arrangements for Embedded Generators
  • Decisions
  • Open letters and correspondence
Decision notification on industry proposals (CMP264 and CMP265) to change electricity transmission charging arrangements for Embedded Generators
19/06/2017Cap and floor regime: Initial Project Assessment of the GridLink, NeuConnect and NorthConnect Interconnectors
  • Consultations and responses
Cap and floor regime: Initial Project Assessment of the GridLink, NeuConnect and NorthConnect Interconnectors
19/06/2017Cap and floor regime: An update on ‘Window 1’ interconnector projects
  • News and blogs
  • Open letters and correspondence
Cap and floor regime: An update on ‘Window 1’ interconnector projects
13/06/2017Response to the Scottish Government's 'Consultation on a Scottish Energy Strategy: The future of energy in Scotland'
  • Open letters and correspondence
Response to the Scottish Government's ‘Consultation on a Scottish Energy Strategy: The future of energy in Scotland'
13/06/2017Open letter: National Grid Electricity Transmission’s deferral of £480m of RIIO-T1 allowances
  • Open letters and correspondence
Open letter: National Grid Electricity Transmission’s deferral of £480m of RIIO-T1 allowances
13/06/2017Ofgem sets out how proposed reductions in National Grid and distribution network companies’ allowances will benefit consumers
  • Press releases
09/06/2017Business Impact Target
  • Reports and plans
Qualifying Regulatory Provisions
08/06/2017Direction notice to modify National Grid’s electricity transmission licence
  • Decisions
Direction notice to modify National Grid’s electricity transmission licence
08/06/2017Further instructions to electricity transmission licensees on modifications to their Network Output Measures Methodology
  • Open letters and correspondence
Further Instructions for Development of ET NOMs Methodology and Associated Work
01/06/2017Notices to modify the network licences to curtail the recovery of Bid Preparation Costs from 1 April 2018
  • Consultations and responses
01/06/2017Consultation on version 3.0 of the Network Innovation Allowance governance documents
  • Consultations and responses
Consultation on version 3.0 of the NIA governance documents
26/05/2017Decision on Interest During Construction for Offshore Transmission and interconnectors granted the cap and floor regime to apply during 2017/18
  • Decisions
Decision on Interest During Construction for Offshore Transmission and interconnectors
26/05/2017Notice of intention not to reject modified electricity transmission Network Output Measures (NOMs) Methodology
  • Decisions
ET NOMs Methodology Confirmation Letter
18/05/2017Notice of statutory consultation on a proposal to modify the Price Control Financial Handbook held by Network Operators
  • Consultations and responses
17/05/2017MPR: Modifications to the ET1 and GT1 PCFMs
  • Charts and data
  • Decisions
Decision on modifications to the PCFMs for the MPR
17/05/2017RIIO-ET1 Financial Model following mid-period review
  • Charts and data
ET1 PCFM with MPR
11/05/2017Notices to modify the network licences for the network innovation strategy
  • Consultations and responses
11/05/2017Consultation on version 3.0 of the Network Innovation Competition governance documents
  • Consultations and responses
Consultation on version 3.0 of the Network Innovation Competition governance documents
28/04/2017Direction to modify the Regulatory Instructions and Guidance (RIGs) for RIIO-ET1
  • Decisions
Decision April 2017 ET
28/04/2017Decision on NGET’s cost recovery application for New Balancing Services Winter 2016/17
  • Decisions
  • Open letters and correspondence
Decision to allow National Grid Electricity Transmission (NGET) to recover costs related to the procurement, testing and use of SBR and DSBR services during Winter 2016/17
25/04/2017Onshore competition working group on industry codes and standards
  • Agendas, minutes and presentations
ECIT Industry Codes and Standards Working Group 14 February 2017
25/04/2017Onshore competition steering group 16 March 2017
  • Agendas, minutes and presentations
Minutes of the Extending competition in transmission industry group - 16 March 2017
25/04/2017Onshore competition working group on the early CATO model
  • Agendas, minutes and presentations
WG report on early CATO model
21/04/2017Second onshore competition working group on the tender specification
  • Agendas, minutes and presentations
Tender Specification Workshop Report
21/04/2017Network Innovation Competition– amendments to Scottish Power Transmission’s Visualisation of Real Time System Dynamics using Enhanced Monitoring (VISOR) project
  • Open letters and correspondence
Network Innovation Competition– amendments to Scottish Power Transmission’s Visualisation of Real Time System Dynamics using Enhanced Monitoring (VISOR) project
21/04/2017Electricity NIC year five screening submission for HARP – Holistic Active and Reactive Project (Western Power Distribution)
  • Reports and plans
Electricity NIC year five screening submission for HARP – Holistic Active and Reactive Project (Western Power Distribution)
21/04/2017Electricity NIC year five screening submission for Transition (Scottish and Southern Power Distribution)
  • Reports and plans
Electricity NIC year five screening submission for Transition (Scottish and Southern Power Distribution)
21/04/2017Electricity NIC year five screening submission for Fusion (Scottish Power Distribution)
  • Reports and plans
Electricity NIC year five screening submission for Fusion (Scottish Power Distribution)
21/04/2017Electricity NIC year five screening submission for Power Saver Plus (Electricity North West)
  • Reports and plans
Electricity NIC year five screening submission for Power Saver Plus (Electricity North West)
21/04/2017Electricity NIC year five screening submission for Active Response – Active Response to Distribution Network Constraints (London Power Networks)
  • Reports and plans
Electricity NIC year five screening submission for Active Response – Active Response to Distribution Network Constraints (London Power Networks)
21/04/2017Electricity NIC year five screening submission for EFFS – Electricity Flexibility and Forecasting System (Western Power Distribution)
  • Reports and plans
Screening submission for ‘EFFS’ - Electricity Flexibility and Forecasting System from Western Power Distribution.
21/04/2017Electricity NIC year five screening submission for LV Engine (Scottish Power Distribution)
  • Reports and plans
Electricity NIC year five screening submission for LV Engine (Scottish Power Distribution)
21/04/2017Response to the Building Our Industrial Strategy green paper
  • Open letters and correspondence
Response to the Building Our Industrial Strategy green paper
20/04/2017SOEMRDRIt Direction for Relevant Year 2015/16 Pursuant to EMR Dispute Resolution Incentive
  • Decisions
SOEMRDRIt Direction for Relevant Year 2015-16 pursuant to EMR Dispute Resolution Incentive
07/04/2017Decision on Ofgem's policy for funding Pension Scheme Established Deficits
  • Decisions
Decision on Ofgem's policy for funding Pension Scheme Established Deficits
31/03/2017Guidance for Network Innovation Competition (NIC) Close Down Reports and the NIC Successful Delivery Reward (SDR) process
  • Guidance
Guidance for Network Innovation Competition (NIC) Close Down Reports and the NIC Successful Delivery Reward (SDR) process
31/03/2017The Network Innovation Review: our policy decision
  • Decisions
The Network Innovation Review: our policy decision
31/03/2017Ofgem proposes to reduce National Grid’s allowance for its gas transmission price control
  • Press releases
30/03/2017Determination on new outputs in National Grid’s electricity transmission price control
  • Decisions
Determination on new outputs in National Grid’s electricity transmission price control
29/03/2017Forward Work Programme 2017-18
  • Decisions
Forward Work Programme 2017-18
22/03/2017MPR: Statutory Consultation on modifications to the ET1 & GT1 PCFMs
  • Consultations and responses
Mid-period review: Statutory Consultation on modifications to the RIIO-ET1 & RIIO-GT1 PCFMs to incorporate the MPR
15/03/2017Publication of supplementary modelling report on CMP264/265 minded to decision and optional workshop to discuss report
  • Open letters and correspondence
  • Reports and plans
15/03/2017Spreading the costs of networks fairly
  • News and blogs
14/03/2017Ofgem’s Future Insights paper 4 - The futures of domestic energy consumption
  • Reports and plans
Ofgem’s Future Insights series – The Futures of Domestic Energy Consumption
14/03/2017Notice proposing modifications to the Regulatory Instructions and Guidance (RIGs) for RIIO-ET1 (version 4.0)
  • Consultations and responses
  • Charts and data
  • Guidance
Notice March 2017 ET
13/03/2017Targeted Charging Review: A consultation
  • Consultations and responses
Targeted Charging Review - a consultation
13/03/2017International review of cost recovery issues: A report by CEPA and TNEI
  • Reports and plans
International review of cost recovery issues
13/03/2017Ofgem opens tenders for links to the Galloper and Walney Extension offshore wind farms
  • Press releases
03/03/2017Consultation on proposed approach to cost recovery in relation to Capacity Allocation and Congestion Management mechanisms for electricity interconnectors
  • Consultations and responses
Consultation on CACM cost recovery
03/03/2017Decision to grant derogations to Western Power Distribution for distribution use of system charges in 2017/18 and 2019/20
  • Decisions
Decision to grant derogations to Western Power Distribution for distribution use of system charges in 2017/18 and 2019/20
01/03/2017Six bidders shortlisted in tender for three offshore transmission links
  • Press releases
01/03/2017Ofgem proposes lower payments for embedded generators to reduce costs for consumers
  • Press releases
01/03/2017Embedded Benefits: Consultation on CMP264 and CMP265 minded to decision and draft Impact Assessment
  • Consultations and responses
Minded to decision and draft Impact Assessment of industry’s proposals (CMP264 and CMP265) to change electricity transmission charging arrangements for Embedded Generators
24/02/2017What do energy networks do for you?
  • News and blogs
24/02/2017RIIO electricity transmission annual report 2015-16
  • Reports and plans
RIIO-ET1 annual report 2015-16
24/02/2017Ofgem reduces National Grid’s spending allowances for its transmission price controls
  • Press releases
24/02/2017Consultation on mid-period review parallel work
  • Consultations and responses
MPR parallel work consultation
24/02/2017Mid-period review decision
  • Decisions
Mid-period review decision
23/02/2017Amendments to the ownership unbundling requirements of the Gas Act 1986 and the Electricity Act 1989
  • Open letters and correspondence
Open letter on amendments to the ownership unbundling requirements of the Gas Act 1986 and the Electricity Act 1989
14/02/2017Local grid owners must be more flexible to meet demand
  • News and blogs
13/02/2017Decision on the assessment criteria for derogations from the Grid Connection Codes
  • Decisions
Decision on the assessment criteria for derogations from the Grid Connection Codes
10/02/2017Decision on the arrangements for more than one Nominated Electricity Market Operator in a Bidding Zone
  • Decisions
Decision on the arrangements for more than one NEMO in a bidding zone
09/02/2017Network Innovation Competition– amendments to SHE Transmission’s Modular Approach to Substation Construction (MASC) project
  • Open letters and correspondence
Network Innovation Competition– amendments to SHE Transmission’s Modular Approach to Substation Construction (MASC) project
06/02/2017Regulatory Sandbox: calling for expressions of interest
  • Open letters and correspondence
Open Letter Regulatory Sandbox 6 February 2017
03/02/2017Upcoming deadline to submit for initial screening for the 2017 Electricity Network Innovation Competition (NIC)
  • Guidance
03/02/2017Consultation on the guidance for the Transmission Constraint Licence Condition
  • Consultations and responses
  • Guidance
Consultation on Transmission Constrain Licence Condition Guidance
03/02/2017Statutory consultation on the Transmission Constraint Licence Condition
  • Consultations and responses
Statutory consultation on the proposed licence condition to prohibit potential abuse of transmission constraints by generators in the balancing mechanism
03/02/2017Electricity Network Innovation Competition Funding Direction 2016
  • Open letters and correspondence
Electricity Network Innovation Competition Funding Direction 2016
03/02/2017Network Innovation Competition - Project Direction for Transmission & Distribution Interface (TDI) 2.0
  • Open letters and correspondence
Network Innovation Competition - Project Direction for Transmission & Distribution Interface (TDI) 2.0
03/02/2017Network Innovation Competition - Project Direction for PowerFuL-CB
  • Open letters and correspondence
Network Innovation Competition - Project Direction for PowerFuL-CB
03/02/2017Network Innovation Competition - Project Direction for OpenLV
  • Open letters and correspondence
Network Innovation Competition - Project Direction for OpenLV
03/02/2017Network Innovation Competition - Project Direction for Phoenix
  • Open letters and correspondence
Network Innovation Competition - Project Direction for Phoenix
02/02/2017Onshore competition working group on market offering and risk allocation
  • Agendas, minutes and presentations
WG report on market offering and risk allocation
02/02/2017Onshore competition working group on late CATO model
  • Agendas, minutes and presentations
WG report on late CATO model
02/02/2017Onshore competition steering group 24 October 2016
  • Agendas, minutes and presentations
Minutes of the Extending competition in transmission industry group - 24 October 2016
02/02/2017Onshore competition steering group 27 Juy 2016
  • Agendas, minutes and presentations
Minutes of the Extending competition in transmission industry group - 27 Juy 2016
30/01/2017Decision for consultation on SHE Transmission’s request for additional funding for its Beauly-Denny project
  • Decisions
Decision for consultation on SHE Transmission’s request for additional funding for its Beauly-Denny project
30/01/2017Ofgem’s Future Insights paper 3 - Local energy in a transforming energy system
  • Reports and plans
Ofgem’s Future Insights series – Local Energy in a Transforming Energy System
13/01/2017Decision to modify the Funding Return Mechanism in the Network Innovation Competition (NIC) and Low Carbon Networks Fund (LCNF) licence conditions
  • Decisions
Funding Return Mechanism decision letter
12/01/2017Future arrangements for the electricity system operator: its role and structure
  • Consultations and responses
Future arrangements for the electricity system operator: its role and structure
12/01/2017Greater separation for National Grid’s system operator role
  • Press releases
09/01/2017Minded to decision to remove the Supplemental Balancing Reserve and Demand Side Balancing Reserve cost recovery arrangements for 2017/18
  • Consultations and responses
Minded to decision to remove the Supplemental Balancing Reserve (SBR) and Demand Side Balancing Reserve (DSBR) cost recovery arrangements for 2017/18