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  • Transmission Network Use of System Charges

  • Transmission Network Use of System (TNUoS) charges recover the cost of installing and maintaining the transmission system in England, Wales, Scotland and offshore. Transmission customers pay a charge based on which geographical zone they are in, whether they are generation or supply and the size of that generation or supply. TNUoS tariffs are published by 31 January and take effect from 1 April each year.

  • Please click here to link to the Charging Review webpage.
  • 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
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      Title:  TNUoS Charging Statements
      Sub Title:
      Text:  
      Current and previous Statements of Transmission Use of System Charges
       
      Link to URL:   Statements
      Current and previous Statements of Transmission Use of System Charges

      Statements
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      Title:  Forecast and Final TNUoS Tariffs
      Sub Title:
      Text:  
      National Grid's TNUoS tariff forecasts for year ahead, including draft and final tariffs, and five year ahead.
       
      Link to URL:   Forecast and Final TNUoS Tariffs
      National Grid's TNUoS tariff forecasts for year ahead, including draft and final tariffs, and five year ahead.

      Forecast and Final TNUoS Tariffs
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      Promo Panel
       
      Title:  Methodology
      Sub Title:
      Text:  
      The methodology National Grid uses to set TNUoS tariffs and charges is in the Connection and Use of System Code, Section 14, Part 2.
       
      Link to URL:   Methodology
      The methodology National Grid uses to set TNUoS tariffs and charges is in the Connection and Use of System Code, Section 14, Part 2.

      Methodology
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      Promo Panel
       
      Title:  Tools and data
      Sub Title:
      Text:  
      Transport models, notifications, guides, Triads,  historical data and tools.
       
      Link to URL:   Tools and data
      Transport models, notifications, guides, Triads, historical data and tools.

      Tools and data
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      Promo Panel
       
      Title:  Charging Methodology CUSC Consultations
      Sub Title:
      Text:  
      Documents relating to open letters and consultations on charging methodology as <b>codified</b> in the CUSC.
       
      Link to URL:   CUSC Charging Methodology Open Letters
      Documents relating to open letters and consultations on charging methodology as codified in the CUSC.

      CUSC Charging Methodology Open Letters
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      Promo Panel
       
      Title:  Charging Methodology Policy Consultations
      Sub Title:
      Text:  
      Open letters, consultations and decisions on charging methodology <b>not codified</b> in the CUSC. 
       
      Link to URL:   Charging Methodology Policy
      Open letters, consultations and decisions on charging methodology not codified in the CUSC.

      Charging Methodology Policy
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      Promo Panel
       
      Title:  Triads
      Sub Title:
      Text:  
      Data used by National Grid to determine charges for half-hourly metered demand customers.
       
      Link to URL:   Triads
      Data used by National Grid to determine charges for half-hourly metered demand customers.

      Triads