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  • ev connections header

    EV Connections

    Just bought an EV? Or thinking of getting an EV?

  • Charging at home

    We recommend speaking to an electrician/installer to see if you home wiring is sufficient to support a charging point, or if you need to apply for an upgrade or new connection.

    Your installer should have completed an 'adequacy of supply assessment', if your supply is adequate for the charging point your installer can notify us of the installation by downloading the form below and returning it to connections@ssen.co.uk. Once installed, your installer should notify us within 28 days of commissioning.

    If your supply is not currently 'adequate' your installer will need to contact us by phone to request a 'supply upgrade'. Your installer should also contact us if there are concerns over maximum demand or the cut-out.

  • Installers

    It is important that we have visibility of where electric vehicle charging equipment is being connected to help us locate increased demand and ensure the network is fit for purpose. We want to make it simple and easy for you to notify us when you are installing an electric vehicle charging point. 
     
    Please note that it is the installer's responsibility:


    • Before installing the charging equipment, to assess how adequate the electricity supply capacity is for the new electric vehicle load plus any existing load.


    • Before installing the charging equipment, to assess the adequacy of the earthing


    • Notify us (or another electricity distribution operator) after you have installed the charging equipment within 28 days.


    • Check who your local electricity network operator is here. Our two licence areas cover the south of England and north of Scotland, but there are Independent Distribution Network Operators who operate within these areas.

    If the property does not pass the adequacy test, you have concerns over maximum demand or the cut-out please contact our Connections and Engineering team to request a supply upgrade


    Looking for an Meter Point Administration Number (MPAN) for a property? The customer you are installing the charge point will be able to find the MPAN on their electricity bill. Find out more here.

  • Electric Vehicles After Diversity Maximum Demand

    When designing new developments or assessing the retrofit of existing developments, we have network design principles that should be adhered to.

    Care should be taken when considering the connection of Low Carbon Technologies (LCT) such as electric vehicles (EVs), as studies such as My Electric Avenue have shown that the use of slow chargers (3.5 kW) can more than double the peak demand of a domestic property.

     

    Charging events will often last for several hours at the sustained rate of the charge point, affecting the after diversity maximum demand (ADMD) of electric vehicle (EV) charging – as a result, the total kW rating of the EV charging point should be added to the ADMD values for domestic properties, unless there is more than 20 EV charging points on the feeder in which case we apply a 0.5 diversity factor which means half the total kW rating of the EV charging point can be used.

     

    In summary:

    •  ≤ 20 EV charging points connected to a feeder, EV demand = total kW rating of charger
    •  > 20 EV charging points connected to a feeder, EV demand = 0.5 x the total kW rating of charger

     

    Full guidance can be found in our Planning Standards for Low Voltage Distribution Network (TG-NET-NPL-001) policy document.

      We are committed to reviewing whether these figures should be revised in light of the latest datasets as they become available, and will update our stakeholders if/when we do

  • Contact us

    • Spacer icon for Telephone symbol Telephone symbol
      Call us on
      0800 048 3516
    • Spacer icon for email contact email contact
      Email us at:
      connections@ssen.co.uk
  • EV Car plug

  • Connection process – if your property passes supply adequacy assessment

    Connection Process - IF your property passes supply adequacy assessment

    Connection process – if your property fails supply adequacy assessment

    Connection Process - IF your property fails supply adequacy assessment

    Connection process – if you don’t already have a supply

    Connection Process - IF you don