DCMF MIG Issues Form - The completed form should be issued to DCMF@electralink.co.uk
Document Control
Issue Title:
EDCM transparency
Issue Number1:
Issue 70
Attachments:
Date Submitted
13 September 2013
Originator details
Originator Name
Franck Latrémolière
Company Name
Reckon LLP
Industry Role
Email Address
f20@reckon.co.uk
Telephone Number
020 7841 5858
Nature of Issue
Whilst DNOs publish detailed information in their statements of use of system charges about
locational charges, they do not currently release a few other data items that are necessary for
customers/suppliers to verify and understand the calculation of their EDCM tariffs. The lack of
working published models makes it difficult for customers and suppliers to estimate the
potential impact on future EDCM tariffs of possible changes (e.g. in super-red consumption).
Proposed Solution
The underlying issue has been discussed by MIG before this issue form was formally raised, and
significant progress has already been made towards developing a solution.
The DNOs cannot publish their EDCM spreadsheet models because they consider that they owe
a duty of confidentiality to individual customers in respect of the import and export capacities,
estimated super-red consumption (active and reactive) and estimated super-red generation.
These data are included in table 935 and, as things stand, a model without these data cannot
reproduce the correct tariff (even for other customers).
I have circulated on 23 August 2013 and 30 August 2013 two non-confidential workbooks (for
1
Assigned by ElectraLink
FCP and LRIC), which reproduce the calculations in the approved EDCM models with
modifications that allow the model to return the correct tariffs for customers whose data has
been fully populated, even if data for other customers are missing. This is achieved by
requiring 14 non-confidential aggregate data items as additional input data; these aggregate
data items can be calculated by the DNO by populating the spreadsheet with the full set of
input data and changing one flag. The non-confidential workbooks allow customers to be
added, removed or changed, and the formulas in the workbooks make appropriate
adjustments to totals so as to match what the approved EDCM models would have calculated.
The issue would be solved if DNOs would publish alongside their statement of charges the nonconfidential workbooks populated with the relevant generic and locational input data and the
values of the 14 aggregate data items, but with customer-confidential information in table 935
removed; and then provide to each supplier, customer and prospective customer the table 935
data items that relate to their sites.
Ideally, information to individual suppliers, customers and potential customers would be
provided in an automatic way using an improved version of the customer information template
that would integrate with the non-confidential workbook to facilitate scenario modelling.
Target Implementation Date
I propose development and implementation in two phases. Phase 1 would provide a basic
solution by publishing non-confidential versions of the EDCM models. Phase 2 would deliver an
improved version of the EDCM customer information template.
September 2013 MIG: Accept the issue and this provisional project plan (meeting focused on
CDCM issues).
October 2013 MIG: Modify or confirm this project plan. Each DNO to confirm whether any
redactions other than capacities, consumption and generation numbers are necessary. Review
non-confidential EDCM workbooks and specify any necessary modifications.
November 2013 MIG: No more than a brief update (meeting focused on CDCM issues).
December 2013 MIG: Resolve any difficulty that might prevent any DNO to release nonconfidential workbooks alongside their indicative statements of charges. Start phase 2 by
reviewing the current customer information template and specifying the general structure of
an improved template and how it might integrate with the non-confidential workbooks.
By 31 December 2013: DNOs publish non-confidential workbooks (end of phase 1).
January 2014 MIG: No more than a brief update (meeting focused on CDCM issues).
February 2014 MIG: Review proposed customer information template (which I would circulate
in January 2014) and specify any necessary modifications.
March 2014 MIG: No more than a brief update (meeting focused on CDCM issues).
April 2014 MIG: Sweep up any residual matters and close the issue. (If anyone wants to ask
DNOs to publish forecast information as well, or wants to bring these areas of information
provision under DCUSA governance, then that would be a separate issue.)
By 30 April 2014: DNOs finish sending improved customer information templates.