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  • Tools, Data and Documents

  • This page contains information to help customers understand National Grid's charges including:

    • The transport model 
    • Guides and tutorials
    • Historical tariffs
    • Tools
    • Generation zoning reviews
  • Industry Information Guides

  • 21 Jan 2016
    Generator Payment Information
    407 KB

  • 21 Jan 2016
    Offshore Information
    270 KB

  • 21 Jan 2016
    TNUoS, BSUoS and Connection Charging Information
    316 KB

  • 21 Jan 2016
    Triads Information
    272 KB

    26 Oct 2016
    Interconnector_Charges
    11 KB

    01 Nov 2016
    Embedded_Benefit
    40 KB

  • To view the Wider Cancellation Charge Statement please view the connections Policies and Guidance web page.

    To view notifications of TNUoS Tariff changes please see the TNUoS Tariff Forecasts and Condition 5 web page.

    To view open letters on CUSC Charging Methodology please see the Transmission Charging Methodology CUSC Open Letters page. To view open letters on non-CUSC Charging Methodology please see the Charging Methodology Policy Decisions page.

    To view the Triads data please see the Triads web page.

  • If you have any feedback on this web page, suggestions for ways to improve it or queries relating to this page then please contact Charging.Enquiries@NationalGrid.com

  • DCLF ICRP Transport Model

  • National Grid publishes the DC Load Flow Investment Cost Related Pricing (DCLF ICRP) Transport Model which allows users to undertake their own sensitivity analysis of generation and demand tariffs under different scenarios.

    For more detailed information on the DCLF ICRP, please see Chapter 2 of The Statement of the Use of System Charging Methodology in Section 14 of the CUSC.  

    If you would like a copy of the DCLF ICRP Transport Model, require further information on the charging methodologies and principles or have any other charging enquiry, please contact our Charging Team at charging.enquiries@nationalgrid.com 

    or at

    National Grid House
    Warwick Technology Park
    Gallows Hill
    Warwick
    CV34 6DA

    01926 654633

  • Customer Seminar Slides

  • The list  below contains the downloadable presentations from each of the Seminars:
  • 07 Apr 2017
    TNUoS Methodology Presentation
    12565 KB

    06 Dec 2016
    TNUoS Tariff Forecasting Sept 2016_V1 0
    1500 KB

    13 Jun 2016
    The Demand Seminar 080616
    6035 KB

  • Guides and Tutorials

  • 10 Jul 2017
    2017-18 AAHEDC Charging Statement
    231 KB

    10 Jul 2017
    2017-18 AAHEDC Final Tariff
    94 KB

    30 Mar 2017
    2017-18 AAHEDC Draft Tariff
    92 KB

    13 Jul 2016
    2016-17 AAHEDC Charging Statement
    230 KB

    13 Jul 2016
    2016-17 AAHEDC Final Tariff
    91 KB

    31 Mar 2016
    2016-17 AAHEDC Draft Tariff
    91 KB

    31 Jul 2015
    2015-16 AAHEDC Charging Statement
    231 KB

    15 Jul 2015
    2015-16 AAHEDC Final tariff
    90 KB

    27 Mar 2015
    2015-16 AAHEDC Draft Tariff
    17 KB

    15 Jul 2014
    2014-15 AAHEDC Charging Statement
    81 KB

    15 Jul 2014
    2014-15 AAHEDC Final Tariff
    21 KB

    15 Jul 2014
    2014-15 AAHEDC Draft Tariff
    21 KB

    15 Jul 2014
    2013-14 AAHEDC Charging Statement
    80 KB

    15 Jul 2014
    2013-14 AAHEDC Draft Tariff
    20 KB

    15 Jul 2014
    2012-13 AAHEDC Charging Statement
    80 KB

    15 Jul 2014
    2012-13 AAHEDC Draft Tariff
    20 KB

    15 Jul 2014
    2011-12 AAHEDC Charging Statement
    80 KB

    15 Jul 2014
    2011-12 AAHEDC Draft Tariff
    20 KB

    15 Jul 2014
    2010-11 AAHEDC Charging Statement
    80 KB

    15 Jul 2014
    2010-11 AAHEDC Draft Tariff
    20 KB

    15 Jul 2014
    2009-10 AAHEDC Charging Statement
    80 KB

    15 Jul 2014
    2009-10 AAHEDC Draft Tariffs
    24 KB

    15 Jul 2014
    2008-09 AAHEDC Charging Statement
    80 KB

    15 Jul 2014
    2008-09 AAHEDC Draft Tariff
    19 KB

    15 Jul 2014
    2007-08 AAHEDC Charging Statement
    80 KB

    15 Jul 2014
    2006-07 AAHEDC Charging Statement
    83 KB

    15 Jul 2014
    2005-06 AAHEDC Charging Statement
    41 KB

  • Historical Tariffs

  • 22 Mar 2017
    TNUoS Tariffs 2005-06 to 2017-18
    138 KB

  • Tools and Other Data

  • The current charging calculations are based on the Oct 2014 TEC register. The following list of documents includes a link to this specific register. To view the latest TEC register visit the TEC Register and Interconnector Register web page.
  • 30 Nov 2016
    ETYS16 AppG demand data
    57 KB

    30 Nov 2016
    ETYS16 AppF generation data
    2344 KB

    05 Dec 2016
    ETYS15 AppF generation data
    2348 KB

    04 Jan 2017
    ETYS15 AppG demand data
    61 KB

  • 11 Feb 2016
    Generator Tariff Calculator
    40 KB

    11 Feb 2016
    Generator Tariff Calculator Guide
    286 KB

    09 Dec 2015
    TEC Register 30 Oct 2015
    49 KB

    17 Dec 2014
    TEC Register 31 Oct 2014
    585 KB

    02 Oct 2013
    Network diagrams showing non MITS nodes
    1729 KB

    13 Dec 2013
    Draft Annual Load Factors 2014-15
    121 KB

  • Generation Zoning Reviews

  • National Grid will normally undertake a review of generation tariffs zones at the start of the Price Control period, unless there is a significant change in the generation background. This are contains consultation and details of previous reviews.
  • 02 Oct 2013
    Generation Rezoning 2013-14
    646 KB

    02 Oct 2013
    Generation Rezoning 2013-14 Responses
    211 KB

    02 Oct 2013
    Generation Zones 2007-08
    476 KB

    02 Oct 2013
    Generation Zoning Map 2013-14
    816 KB

    20 Jul 2016
    Mapping Power Station by TNUoS Zone 2016
    49 KB


  • Many of the files available to download on this page are Acrobat PDF files. To access these you will need Acrobat Reader which is available from the Adobe web site.