Structure of Charges Year-end review for DCMF 22 November 2007.
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Transcript of Structure of Charges Year-end review for DCMF 22 November 2007.
![Page 1: Structure of Charges Year-end review for DCMF 22 November 2007.](https://reader031.fdocuments.us/reader031/viewer/2022012916/5697bfdb1a28abf838cb0a49/html5/thumbnails/1.jpg)
Structure of Charges Year-end review for DCMF
22 November 2007
![Page 2: Structure of Charges Year-end review for DCMF 22 November 2007.](https://reader031.fdocuments.us/reader031/viewer/2022012916/5697bfdb1a28abf838cb0a49/html5/thumbnails/2.jpg)
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Background
• Interim arrangements were put in place in 2005
– Consistent connection boundary for demand and generation
– Introduction of GDUoS
• Long term arrangements were planned for implementation in 2007
– Forward looking charging methodologies, priority EHV
– HV/LV generation
– Charges to IDNOs
– Charging products and structures
– Generators connected pre-April 2005
– Common format for charging methodology statements
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Current position
• WPD– Implemented EHV methodology in April 2007– Continuing to progress outstanding issues
• G3 (SSE, SP, CN), UU & EDF– Consulted in 2007
• CE– Developing detailed project plan, discussions with Bath
University
• Most have made progress on load flow analysis
• We do not anticipate any new methodologies for implementation in April 2008
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Planned implementation
• Previously said that new charging models should be implemented prior to start of DPCR5
• Progress to date has been slow and the work and time required has been underestimated
• Since April 2005, 81 mods submitted
– 58% not vetoed
– 19% withdrawn
– 23% vetoed
• Still no guarantees that revised methodologies will be in place by 2009
• Since 2005 understanding of charging principles has substantially increased
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HV/LV generator charging
• Existing generation charging model simplistic; EHV models cannot be readily extended
• At last ISG it was agreed that DCMF would progress
• DE is becoming increasingly important:
– DEWG has identified the importance of DUoS charges that take into account the benefits of generation
– Short haul demand related tariffs more cost-reflective?
• Needs to be progressed as a matter of priority
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Boundary charging
• IDNOs constitute an important change to the DNOs’ business
• IDNOs will be competing with DNOs to provide part of the service of distributing electricity
• In doing so they will be dependent on monopoly services provided by the DNO
• Vital that DNOs ensure that charges for use of the upstream network are consistent with the requirements of competition law
• Remains a risk that current charging methodologies could distort competition
• We have repeatedly urged DNOs to review their approach to charging IDNOs without delay
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Specific considerations
• What costs are assumed to be avoided? How are these calculated?
– What cost elements make up the fixed charge, in the boundary & end user tariff?
– What cost elements are represented by scaling, in the boundary & end user tariff?
• Justification for additional costs and how these are calculated
• Use of average assumptions
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Principles
• Principle of equivalent charges for same loads is desirable but secondary to compliance with competition law requirements
• Charges based on the same model that is used to set charges for end-customers can be appropriate, subject to specific considerations above
• Differences in the tariff structure at the boundary compared to the structure applied by the DNO to its own end customers gives rise to the potential for inappropriate margins
– e.g. Capacity charges at the boundary for predominantly domestic sites could potentially restrict competition
• Risk that average assumptions may result in inappropriate charges in a number of situations
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Options for taking forward SoC
Three options:
1. Continue with individual methodology development
– 42% mods to date vetoed or withdrawn
– Probable resource clash with DPCR5
2. Postpone development until after DPCR5
– Not appropriate for generation charges/benefits or for charges to IDNOs
3. Introduce a common methodology for all DNOs
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A common methodology for all DNOs
What are the benefits?
• Consistency in methodology across DNOs – benefits to suppliers and customers
• Most cost and time effective way to achieve a positive outcome within the original timescales
• Manage resources during busy price control period, for DNOs and for Ofgem, but would require commitment from all parties
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A common methodology for all DNOs
How would this be achieved?
• Draft common methodology for all DNOs, facilitated by Ofgem
• Likely to allow different versions of load flow analysis to determine time to reinforcement
• Taken forward through industry meetings in first half of 2008
• Implementation:
– high degree of buy-in at start, DNOs submit mods Sept 08; or
– implement as part of DPCR5 through licence mod and/or via DCUSA; need to consider governance process
• Look to approve methodologies in 2008/09
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Any views?
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