The IET is carrying out some important updates between 17-30 April and all of our websites will be view only. For more information, read this Announcement

Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 37 replies
  • Subscribers 31 subscribers
  • Views 3217 views
  • Users 0 members are here
Options
You may also be interested in
This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

Help wanted to read/understand an electrical supply plan from DNO - updated new query

Morgan Phillips
EDIT: I have one further query: WPD say that if they were upgrading the local network they would overlay the current 95mm wcon cable with a 185mm wcon cable, but that this alone would not be sufficient to allow for my property to be connected to the local network. Instead, they said that for me to be connected, a 300mm wcon cable needs to be laid, and they want me to fund the difference between the 185 cable and the 300 cable. 


As they were less than scrupulously transparent in their previous quote, I would like to check if anybody has any thoughts on the veracity of this? Why would upgrading to a 185mm cable not allow sufficient capacity to add my supply?



Original question (already answered):Can anybody assist me in understanding what an existing plan provided by my DNO is showing, and what this means for my request for a new supply please? I've had a very large quote to connect our new house (a passive house) to the network, and am not certain that it is quite right. It appears to be asking us to upgrade the local supply from a 95mm2 cable to a 300mm2 cable, and I am being asked to pay 70% of the cost of that. I was told that if this isn't done, the lights would go out for the rest of the street. I'm not an electrical engineer, so am looking for knowledge with which to go back and discuss the quote. Thanks!



Plan of existing supply.pdf


Plan of proposed new supply.pdf
Parents
  • 0
    Hello Morgan

    This is a good  source of policy on connections https://www.ofgem.gov.uk/ofgem-publications/87259/guideelectricitydistributionconnectionspolicy.pdf


    The following paras are the key ones.... (bold / underline text is my highlight)


    4.1. A connection offer made under section 16 of the act will inform the customer of the charge it will have to pay. If a DNO is providing the connection the charge will be based on the cost of the “minimum scheme”.


    4.2. The minimum scheme is the solution designed solely to provide the capacity needed for the new connection at the lowest overall capital cost. A DNO may design an enhanced scheme,2 but the cost to the customer will not exceed that of the minimum scheme. The customer can also request work in excess of the minimum scheme where it thinks this would be more beneficial. For example, it may decide that a more expensive route to the existing network will receive planning permission more easily and is therefore worth paying for. The customer will need to pay the full cost of this additional work, including the cost of operating and maintaining these additional assets over their lifetime.


    I expect that the 70% is WPD interpretation of the costs of the minimum scheme but I would push them as my previous note.  Good luck.
Reply
  • 0
    Hello Morgan

    This is a good  source of policy on connections https://www.ofgem.gov.uk/ofgem-publications/87259/guideelectricitydistributionconnectionspolicy.pdf


    The following paras are the key ones.... (bold / underline text is my highlight)


    4.1. A connection offer made under section 16 of the act will inform the customer of the charge it will have to pay. If a DNO is providing the connection the charge will be based on the cost of the “minimum scheme”.


    4.2. The minimum scheme is the solution designed solely to provide the capacity needed for the new connection at the lowest overall capital cost. A DNO may design an enhanced scheme,2 but the cost to the customer will not exceed that of the minimum scheme. The customer can also request work in excess of the minimum scheme where it thinks this would be more beneficial. For example, it may decide that a more expensive route to the existing network will receive planning permission more easily and is therefore worth paying for. The customer will need to pay the full cost of this additional work, including the cost of operating and maintaining these additional assets over their lifetime.


    I expect that the 70% is WPD interpretation of the costs of the minimum scheme but I would push them as my previous note.  Good luck.
Children
No Data

Join us to get the best from IET EngX.

Joining EngX lets you personalise your experience so you stay up to date on the topics that interest you, plus you’ll be able to make connections who are looking to collaborate, exchange ideas and more.

Join us Not now

Community Rules & Guidelines