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  • TNUoS Tariff Forecasts and Condition 5

  • This page contains our TNUoS tariff forecasts and the notifications of tariffs changes. Updates for next year's tariffs are published quarterly in accordance with the Connection and Use of System Code (CUSC).  Updates for the next five year's tariffs are published annually in accordance with Condition 5 of the Authority's approval of the use of system charging methodology in March 2005 (referred to as the Condition 5 report.) Please scroll to the bottom to find notifications of tariffs changes.

    The TNUoS tariffs for 2017/18 can be found below and are now fixed.  

    We held a webinar to discuss recent TNUoS tariff publications on Thursday 9 March 2017 for which the Slides can be downloaded.  Please contact us on 01926 654633 if you have any other queries.

    Timetable updates

    2018/19 TNUoS Tariff: The next forecast is expected in June 2017.

  • 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
  • Publications

  • Five Year Forecasts:

  • 28 Feb 2017
    Forecast From 2017-18 to 2021-22
    3274 KB

    19 Apr 2017
    Forecast From 2017-18 to 2021-22 - Tables
    765 KB

    19 Apr 2017
    Forecast From 2017-18 to 2021-22 - Tables - with CMP264_265 Calculator
    765 KB

    09 Feb 2017
    17_18 TNUoS Forecast Timetable
    176 KB

    11 Feb 2016
    Forecast From 2017-18 to 2020-21
    2921 KB

    11 Feb 2016
    Forecast From 2017-18 to 2020-21 Tables
    698 KB

    28 Jan 2015
    Forecast from 2016-17 to 2019-20
    1229 KB

    02 Feb 2015
    Forecast from 2016-17 to 2019-20 Tables
    601 KB

    10 Feb 2016
    Forecast from 2014-15 to 2018-19
    6293 KB

    10 Feb 2016
    Forecast from 2014-15 to 2018-19 - Tables
    101 KB

    10 Feb 2016
    Forecast from 2013-14 to 2017-18
    6125 KB

  • Forecasts of the Tariffs for the 2018 - 2019 charging year:

  • Forecasts of the Tariffs for the 2017 - 2018 charging year:

  • 31 Jan 2017
    Final tariffs 2017_18 v1
    2188 KB

    01 Feb 2017
    Final Tariffs 2017-18 - Tables EXTERNAL
    506 KB

    03 Feb 2017
    Final ALFs Report for 2017-18
    566 KB

    22 Dec 2016
    Dec Quarterly Update 2017_18
    2122 KB

    22 Dec 2016
    DRAFT Dec Forecast 2017-18 - Tables EXTERNAL
    526 KB

    09 Dec 2016
    Draft ALFs for 2017-2018
    562 KB

    31 Oct 2016
    Quarterly Update 2017_18 Oct 2016
    2223 KB

    31 Oct 2016
    Quarterly Forecast 2017-18 - Oct 2016 Tables
    525 KB

    30 Jun 2016
    Quarterly Update 2017_18 Jun 2016
    2196 KB

    30 Jun 2016
    Quarterly Forecast 2017-18 - June 2016 Tables
    173 KB

    29 Jan 2016
    Timetable of 2017-18 TNUoS Forecasts
    78 KB

  • Forecasts of the Tariffs for the 2016 - 2017 charging year:

  • 29 Jan 2016
    Final Tariffs for 2016-17 V1_0
    1042 KB

    29 Jan 2016
    Final Tariffs for 2016-17 V1_0 - Tables
    148 KB

    29 Jan 2016
    Final ALF for 2016-17
    141 KB

    21 Dec 2015
    Draft Tariffs for 2016-17 V1_0
    1745 KB

    21 Dec 2015
    Draft Tariffs for 2016-17 V1_0 - Tables
    133 KB

    04 Dec 2015
    Draft ALF for 2016-17
    129 KB

    25 Nov 2015
    Quarterly Update 2016-17 Nov 2015 V1_1
    1101 KB

    25 Nov 2015
    Quarterly Forecast 2016-17 Nov 2015 V1_1 - Tables
    160 KB

    25 Nov 2015
    Quarterly Update 2016_17 July 2015 V2_1
    1052 KB

    25 Nov 2015
    Quarterly Update 2016_17 July 2015 V2_1 - Tables
    142 KB

    05 Oct 2015
    Quarterly Update 2016_17 May 2015 V1_1
    1031 KB

    05 Oct 2015
    Quarterly Update 2016-17 May 2015 V1_1 - Tables
    133 KB

    05 Oct 2015
    Timetable of TNUoS tariff forecasts for 2016-17
    7 KB

  • Forecast and final Tariffs for the 2015 - 2016 charging year:

  • 05 Oct 2015
    Final Tariffs 15_16 Jan 2015
    875 KB

    05 Oct 2015
    Final Tariffs 15_16 Jan 2015 Tables
    119 KB

    05 Oct 2015
    Draft Tariffs 15_16 Dec 2014
    941 KB

    05 Oct 2015
    Draft Tariffs 15_16 Dec 2014 Tables
    103 KB

    05 Oct 2015
    2014-10-17 v1_0 Oct Forecast of TNUoS Tariffs in 15-16
    390 KB

    05 Oct 2015
    Quarterly Update 15_16 Oct 2014 Tables
    107 KB

    05 Oct 2015
    Quarterly Update July of TNUoS Tariffs in 15_16 v1_1
    1520 KB

    05 Oct 2015
    July 201516 Forecast - Tables
    151 KB

    05 Oct 2015
    Quarterly Update 15_16 April 2014
    1643 KB

    05 Oct 2015
    Initial Forecast of TNUoS Tariffs in 15_16
    5314 KB

  • Forecast and final Tariffs for the 2014 - 2015 charging year:

  • 05 Oct 2015
    Final TNUoS Tariffs 201415
    5376 KB

    05 Oct 2015
    Draft TNUoS Tariffs in 2014-15
    5358 KB

    05 Oct 2015
    Quarterly Update 14_15 Final November v1_1
    6141 KB

    24 Nov 2016
    Quarterly Update 14_15 July 2013
    6010 KB

    05 Oct 2015
    Quarterly Update 14_15 April 2013
    5995 KB

  • File relating to years prior to 2014/15 have been archived off this site. Please contact us on 01926 654633 if you need to access these files.

  • Notifications of Tariffs Changes

  • This area contains the notifications that National Grid is required to make prior to updating TNUoS tariffs.

  • 31 Oct 2016
    150 Day Notice for 2017-18 Charges
    19 KB

    29 Oct 2015
    150 Day Notice for 2016-17 Charges
    19 KB

    29 Oct 2014
    150 Day Notice for 2015-16 Charges
    18 KB

    06 Nov 2013
    150 Day Notice for 2014-15 Charges
    25 KB

    02 Oct 2013
    150 Day Notification for 1April12
    32 KB

    02 Oct 2013
    Mid year Tariff Change further info
    69 KB

    02 Oct 2013
    Notice of Mid Year Tariff Change
    136 KB

    02 Oct 2013
    150 Day Notification for 1April10
    30 KB

    02 Oct 2013
    150 Day Notification for1April08
    24 KB

    02 Oct 2013
    150 Day Notification for 1April07
    31 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.