Structure of Charges project WPD workshop
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- Charlene Cain
- 5 years ago
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1 Structure of Charges project WPD workshop 1
2 Agenda Background to project Summary of proposed charging methodology Changes since October stakeholder meeting Scaling demand charges to required revenue Alternatives considered Key issues Treatment of interconnection with other networks Justifying charges Charges that result Risks of future volatility Treatment of pre 2005 generation update Publication of EDCM model Time table Next steps 2
3 Background to project Common licence requirement to introduce a common LRIC charging methodology at EHV was blocked by the distribution businesses of Scottish Power and Scottish & Southern Energy in October 2008 Ofgem decided to allow distributors to choose between a common LRIC or FCP methodology SLC50A was introduced in September 2009 DNOs have been jointly developing the two methodologies since September 2009 WPD held workshops on 29/04/2010,10/07/2010 and 14/10/2010 that outlined how the two methods (LRIC and FCP) work and the results at those times A joint consultation on the two methods was issued by the DNOs on 18/06/2010 and a final joint consultation is currently underway with a closing date of 01/02/2011 The consultation and previous papers are available from ENA website 3
4 Summary of proposed charging methodology Both methods aim to produce /kva/annum locational costs that reflect future reinforcement of the network WPD has decided to follow LRIC LRIC produces nodal costs and FCP zonal costs LRIC looks at the effect of a small increment at each node on the net present value of future reinforcement, whereas FCP looks at future demand growth in a zone over a 10 year period and assesses the resulting reinforcement needs LRIC treats demand and generation symmetrically (until scaling) whereas FCP utilises a test size generator to assess reinforcement needs 4
5 Summary of proposed charging methodology Resulting marginal charges are fed into a charging model that: Allocates transmission exit charges Other direct costs Deals with sole use asset charges Scales result to required revenue, and Produces tariffs to charge customers to recover this revenue Details of both LRIC and FCP are available from the ENA website 5
6 Summary of proposed charging EDCM applies to: methodology Distribution Systems or premises connected to the Distribution System at 22 kilovolts or more; (c) Distribution Systems or premises connected directly to substation assets that form part of the Distribution System at 1 kilovolt or more and less than 22 kilovolts or less where the primary voltage of the substation is 22 kilovolts or more and where the Metering Point is located at the same substation. Following diagram attempts to summarise this: 6
7 Boundary between CDCM and EDCM B1 B2 B3 C1 C2 C3 EDCM CDCM 7
8 Changes since October stakeholder meeting 8
9 Main areas of change Following areas were highlighted in our October workshop and have not changed further: LRIC Capping Generator Scaling Following areas have changed since our October workshop: Creation of the pot of revenue to be allocated between EDCM demand customers Sharing out of that pot between EDCM demand customers Application of the marginal charges Sole use asset allocation between import and export tariffs Approach to calculating charges for users subject to demand side or generation side management agreements Consideration of the need for further caps to charges 9
10 Main areas of change LRIC Capping The total charge generated by a network branch (from all use of it) is scaled to an annuity of the modern equivalent asset value This significantly reduces many of the charges previously seen particularly impacts generator charges Generator Scaling Generator charges are scaled (using a /kva scalar) to a target revenue derived from the price control allowed revenue This uses a factor of 1/kVA of installed capacity to cover O&M expenditure on sole use assets and shared assets 10
11 Scaling demand charges to required revenue Initially, a pot of revenue to be allocated between EDCM customers needs to be created This pot is created by looking at the cost of the assets used by all EDCM demand customers at the time of peak demand (assessed from a peak demand load flow) as a proportion of the total assets of the network Marginal charges, direct operating costs, network rates, indirect costs and sole use assets are allocated directly to demand customers This leaves a residual to be allocated which is the issue of greatest concern 86% of demand charges in S Wales and 76% of demand charges in S West are scaling 11
12 Scaling demand charges to required revenue This residual scaling represents a mixture of asset costs, tax allowances and pension costs within allowed revenue It has been decided that the tax and pension costs (which across DNOs is 20% of this residual) should be recovered on a fixed /kva basis There are two contenders for allocating the remaining 80% of residual demand scaling: Site-specific demand scaling uses site specific assets calculated from a peak demand notional path load flow as the allocation driver (i.e. what has been used to create the target revenue) or Voltage level demand scaling uses voltage level network assets as the allocation driver Following table summarises the allocation drivers 12
13 Scaling demand charges to required revenue Tariff Element Direct Operating costs Network Rates Indirect costs 80% of residual revenue 20% of residual revenue Site-Specific Scaling approach Site Specific assets on basis of notional path at peak demand Site Specific assets on basis of notional path at peak demand Fixed adder Site Specific assets on basis of notional path at peak demand Fixed adder Voltage level scaling approach Average voltage level assets Average voltage level assets Fixed adder Average voltage level assets Fixed adder 13
14 Scaling demand charges to required revenue There are two conflicting objectives driving the decision between these two methods of scaling: Forward looking charges that are higher in congested parts of the network Charges that are not materially different from a fair and reasonable allocation of costs A test for the first objective is to look at the correlation between the marginal charges for customers and the final charge to see if the marginal cost signal has been preserved Our analysis of this shows a poor correlation for both scaling methods in WPD The second objective can be understood by considering a customer connected very close to a GSP Here, the voltage level demand scaling would give an incentive to seek a private connection as the charge is likely to exceed the asset cost From these considerations, we (WPD) believe that the site specific demand scaling method is the better at meeting the objectives 14
15 Other areas of change since October stakeholder meeting Application of the marginal charges The marginal charges have been split between that for assets close to the user a that for assets remote from the user The part close will be charged on a capacity basis whilst that remote will be on an in year p/kwh basis Sole use asset allocation between import and export tariffs Previously these were all allocated to the import tariff, they are now split proportionately to agreed import/export agreed capacities Approach to calculating charges for users subject to demand side or generation side management agreements Capacity agreed to be available for demand side or generation side management will not be taken into account for the calculation of EDCM charges 15
16 Other areas of change since October stakeholder meeting Consideration of the need for further caps to charges Outliers can occur for several reasons including: The customers characteristics are significantly different from the average on the network. e.g. a customer with a large capacity who only uses a short part of the network may face large and potentially unjustifiable charges under the voltage level scaling approach The power flow analysis could indicate usage of network assets that may not be strictly necessary to supply that customer if the network were designed from scratch. In such cases the site specific approach may result in charges that cannot be justified Consideration is being given to how such caps could be applied 16
17 Other areas of change since October stakeholder meeting Potential solutions are: For the voltage level scaling approach the 80% of residual scaling element could be capped to an annuity on the value of site specific network assets used by the customer As the site specific network assets are calculated at the time of peak demand, it may be appropriate to scale these site specific network assets to the agreed capacity of the customer to account for those with low demands at the time of system peak For the site specific scaling approach the network use factors could be capped to a specific value e.g. set at 85 th percentile 17
18 Treatment of interconnection with other networks 18
19 Treatment of interconnection with other networks DNO DNO interconnection Generally treated as EDCM customers Off shore transmission Treated as an EDCM customer IDNO charges for EHV connected networks Portfolio tariffs for users connected at HV/LV within an EHV connected IDNO network An EDCM tariff for users connected at EHV within an EHV connected IDNO network Further work is still needed with IDNOs to address any concerns 19
20 Justifying charges 20
21 Context Derogation to delay the submission deadline included the following requirement on each DNO (this requirement has subsequently been absorbed into the Licence): To make changes to the methodology as required following sense checks, to ensure they are able to justify the level of charges particularly where charges are moving significantly (either up or down) from current levels 21
22 Justifying Charges Several licence conditions are of relevance to justifying charges: SLC The licensee must not discriminate between any person or class or classes of persons: (a) in providing Use of System;. SLC 13B.8 - The second Relevant Objective is that compliance with the EDCM facilitates competition in the generation and supply of electricity and will not restrict, distort, or prevent competition in the transmission or distribution of electricity or in participation in the operation of an Interconnector. SLC 13B.9 - The third Relevant Objective is that compliance with the EDCM results in charges which, so far as is reasonably practicable after taking account of implementation costs, reflect the costs incurred, or reasonably expected to be incurred, by the licensee in its Distribution Business. In addition, SLC 50A.12 by referring to the original Ofgem specification requires a fixed adder to be used 22
23 Justifying Charges demand We believe that calculating the amount of total required revenue that should be allocated to EDCM customers by assessing their usage of assets at the time of system peak is a reasonably fair way to allocate required revenue Incremental charges established using LRIC are attributed to each customer Where other costs can be separately allocated (direct operating cost, network rates and indirect costs) these have been using an appropriate driver Both proposed methods of scaling residual revenue resulting after allocating marginal costs, operating cost etc have some risk of producing non-cost reflective charges For this reason we believe that capping is required and the approaches proposed should result in justifiable charges to EDCM customers 23
24 Justifying Charges - generation The generation revenue target is calculated as the sum of the DG incentive scheme to post-2005 connected DG and an estimate of the cost if the O&M element of the DG incentive scheme were applied to pre-2005 DG The difference between this target revenue and the marginal charges is applied equally across all generators by using a fixed /kva/year adder Compared to demand the marginal charges and sole use charges for generation are a more significant part of the target revenue and a fixed adder appears to give reasonable results without distorting marginal charges 24
25 Summary Resulting charges need to be justified (a licence obligation) After many options of scaling have been assessed it appears unlikely that there is one that produces justifiable charges in all circumstance without some form of capping to the charges or some component of them Ultimately, each DNO will have to satisfy itself that it can justify the level of charges if this project is going to reach a successful conclusion 25
26 Charges that result 26
27 Evolution of demand charges 27
28 Summary of charges under various options Following tables show the UoS charges for individual sites that result under the different options that have been developed As the methods are still in development they are likely to change further before the method is finalised and there are still risks of data errors Charges in the consultation are based on the data that would be used to set tariffs now this data will have been updated twice before any tariff go live in April 2012 UoS charges are generally made to suppliers and the extent and timing that they are passed onto final charges to customers is governed by the contract between the supplier and customer 28
29 Charges that result Option 41 site specific demand scaling uses data from peak demand load flow as the driver to allocate the 80% of residual revenue Option 42 voltage level demand scaling uses the average voltage level assets as the driver to allocate the 80% of residual revenue Option 41 capped restricts the site specific scaling to twice an average value (concept is to use an 85 th percentile of GB data as we do not have this at present, twice has been used to illustrate the results) Option 42 capped restricts the average scaling to one derived from a notional path load flow analysis 29
30 charges in S West Existing charges Option 41 Option 42 Option 41 Capped Option 42 capped Tariff 1 246, , , , ,576 Tariff 2 132, , , , ,082 Tariff 3 134, , , , ,709 Tariff 4 6,474 13,645 17,456 13,247 17,456 Tariff 5 171, , , , ,865 Tariff 6 20,118 44,235 29,528 40,697 29,528 Tariff 7 19,394 33,063 30,955 32,535 30,955 Tariff 8 30,563 51,282 57,694 49,678 57,694 Tariff 9 11,391 49,175 28,866 35,858 28,866 Tariff , , , , ,015 Tariff , , , , ,721 Tariff 12 8,880 59,732 30,011 40,267 30,011 Tariff 14 52,826 70,620 80,717 68,760 80,717 Tariff 15 34, , , , ,832 Tariff , , , , ,460 Tariff 17 5,041 45,847 42,554 44,549 42,554 Tariff Tariff 19 4,540 4,605 4,408 4,605 Tariff Tariff Tariff 22 3,231 3,255 3,181 3,255 Note: customers marked with ** are currently CDCM and hence the existing charges are CDCM charges 30
31 charges in S West Existing charges Option 41 Option 42 Option 41 Capped Option 42 capped Tariff 23 1,159 1,171 1,133 1,171 Tariff Tariff 25 1,632 1,650 1,592 1,650 Tariff 26 15,178 15,402 14,932 15,402 Tariff Tariff 28 1,098 1,113 1,066 1,113 Tariff 29** 227, ,360 85,825 90,389 85,825 Tariff 30** 130,796 58,826 58,477 57,193 58,477 Tariff 31** 85,679 32,775 41,539 31,840 41,539 Tariff 32** 18,605 8,354 8,446 8,179 8,446 Tariff 33** 145,814 89, ,364 87, ,364 Tariff 34** 148,377 77,316 76,205 75,554 76,205 Tariff 35** 1,517 1,996 1,565 1,947 1,565 Tariff 36** 236,053 48,398 48,840 46,847 48,840 Tariff 37** 178,087 75,763 78,602 74,242 78,602 Tariff 38** 128,465 88,944 69,270 79,734 69,270 Tariff 39** 59,515 60,252 48,862 59,023 48,862 Tariff 40** 184, , , , ,438 Note: customers marked with ** are currently CDCM and hence the existing charges are CDCM charges 31
32 charges in S West Existing charges Option 41 Option 42 Option 41 Capped Option 42 capped Tariff 41 49,971 1,009 1, ,025 Tariff 42 49,971 54,423 60,876 53,130 60,876 Tariff 43 2,627 2,642 2,595 2,642 Tariff Tariff 45 4,842 4,879 4,762 4,879 Tariff Tariff 47 1,010 1, ,021 Tariff 48** 118,630 94,638 92,260 93,260 92,260 Note: customers marked with ** are currently CDCM and hence the existing charges are CDCM charges 32
33 charges in S West Existing charges Option 41 Option 42 Option 41 Capped Option 42 capped Tariff 49 2,454 ( 2,180) ( 2,180) ( 2,179) ( 2,180) Tariff 50 ( 11,879) ( 10,064) ( 10,064) ( 10,064) ( 10,064) Tariff 51 5,350 3,795 3,795 3,796 3,795 Tariff 52 ( 256) ( 1,271) ( 1,271) ( 1,271) ( 1,271) Tariff 53 1,926 3,417 3,417 3,418 3,417 Tariff 54 ( 19,629) ( 11,575) ( 11,575) ( 11,575) ( 11,575) Tariff 55 69,350 30,144 30,144 30,146 30,144 Tariff 56 17,909 11,595 11,595 11,595 11,595 Tariff , , , , ,684 Tariff 58 14,104 14,104 14,105 14,104 Tariff 59 23,839 23,839 23,840 23,839 Tariff 60 8,734 8,734 8,734 8,734 Tariff 61 9,705 9,705 9,706 9,705 Tariff 62 3,014 3,014 3,014 3,014 Tariff 63 1,260 1,260 1,260 1,260 Tariff 64 6,927 6,927 6,927 6,927 Tariff 65 13,136 13,136 13,136 13,136 Note: customers marked with ** are currently CDCM and hence the existing charges are CDCM charges 33
34 charges in S West Existing charges Option 41 Option 42 Option 41 Capped Option 42 capped Tariff 66 4,683 4,683 4,683 4,683 Tariff 67 49,393 49,393 49,394 49,393 Tariff 68 9,738 9,738 9,738 9,738 Tariff 69 90,276 90,276 90,292 90,276 Tariff 70 Tariff Tariff 73 10,454 10,454 10,455 10,454 Tariff 74 5,111 5,111 5,111 5,111 Tariff 75 13,708 13,708 13,708 13,708 Tariff 76 2,161 2,161 2,161 2,161 Tariff 77** ( 10,876) 6,012 6,012 6,013 6,012 Tariff 78** 73 6,255 6,255 6,255 6,255 Tariff 79** ( 1,448) 3,190 3,190 3,190 3,190 Tariff 81** ( 69,723) ( 14,087) ( 14,087) ( 14,087) ( 14,087) Note: customers marked with ** are currently CDCM and hence the existing charges are CDCM charges 34
35 charges in S Wales Existing charges Option 41 Option 42 Option 41 Capped Tariff 1 665, ,778 1,710, ,010 Tariff 2 107, , , ,098 Tariff 3 985, ,804 1,119, ,939 Tariff 4 91, , , ,733 Tariff 5 399, , , ,647 Tariff 6 325, , , ,042 Tariff 7 17, , , ,792 Tariff 8 24, , , ,413 Tariff 9 50, ,058 75, ,243 Tariff 10 11,125 18,315 14,577 18,089 Tariff ,836 1,284, ,326 1,279,021 Tariff 12 1,376, , , ,199 Tariff , , , ,219 Tariff ,871 67, ,825 66,595 Tariff ,504 86, ,617 84,484 Tariff 16 58,058 58,214 65,736 57,414 Tariff , , , ,052 Tariff , , , ,450 Tariff 19 55, , , ,728 Tariff , , , ,377 Tariff 21 4,818 99,782 82,911 99,154 Tariff 22 31,590 45,236 39,992 44,787 Note: customers marked with ** are currently CDCM and hence the existing charges are CDCM charges Option 42 capped 577, , , , , , , ,853 75,619 14, , , , , ,617 65, , , , ,160 82,911 39,992 35
36 charges in S Wales Existing charges Option 41 Option 42 Option 41 Capped Option 42 capped Tariff , , , , ,388 Tariff , , , , ,900 Tariff 25 15,683 35,888 32,442 35,610 32,442 Tariff 26 9,122 72, ,062 71,374 71,466 Tariff 27 59,823 69,981 63,553 69,426 63,553 Tariff 28 40, , , , ,465 Tariff , , , , ,225 Tariff 30 1,326,852 1,438, ,603 1,300, ,603 Tariff 31 94, ,426 94, ,595 94,277 Tariff 32 1, , Tariff Tariff 34 5,343 4,927 5,320 4,927 Tariff 35 2,761 2,361 2,737 2,361 Tariff 36 31,947 26,833 31,697 26,833 Tariff Tariff 38 2,521 2,282 2,508 2,282 Tariff 39 22,638 20,115 22,495 20,115 Tariff 40 1,566 1,328 1,552 1,328 Tariff 42 6,422 5,412 6,361 5,412 Tariff Note: customers marked with ** are currently CDCM and hence the existing charges are CDCM charges 36
37 charges in S Wales Existing charges Option 41 Option 42 Option 41 Capped Option 42 capped Tariff 44** 50,554 18,766 17,228 18,584 17,228 Tariff 45** 114,556 40,153 23,670 38,875 23,670 Tariff 46** 16,765 21,871 9,639 15,512 9,639 Tariff 47** 300, , , , ,891 Tariff , , , , ,918 Tariff 49 2,606 2,231 2,584 2,231 Tariff 50 2,326 1,949 2,304 1,949 Tariff 51 16,923 13,360 16,842 13,360 Tariff 52 2,056 1,729 2,036 1,729 Note: customers marked with ** are currently CDCM and hence the existing charges are CDCM charges 37
38 charges in S Wales Existing charges Option 41 Option 42 Option 41 Capped Option 42 capped Tariff Tariff , , , ,888 Tariff 55 ( 657) ( 657) ( 656) ( 657) Tariff 56 4,899 4,899 4,904 4,899 Tariff 57 2,549 2,549 2,551 2,549 Tariff Tariff 59 5,793 5,793 5,794 5,793 Tariff 60 31,376 31,376 31,404 31,376 Tariff 61 3,729 3,729 3,730 3,729 Tariff 62 ( 4,309) ( 4,309) ( 4,307) ( 4,309) Tariff , , , ,128 Tariff 64 2,694 2,694 2,698 2,694 Tariff 66 ( 13,957) ( 16,216) ( 16,216) ( 16,215) ( 16,216) Tariff 67 ( 24,504) ( 14,201) ( 14,201) ( 14,200) ( 14,201) Tariff 68 ( 19,350) ( 13,178) ( 13,178) ( 13,178) ( 13,178) Tariff 69 81,552 20,958 20,958 20,960 20,958 Tariff ,158 4,654 4,654 4,655 4,654 Tariff ,967 77,348 77,348 77,387 77,348 Note: customers marked with ** are currently CDCM and hence the existing charges are CDCM charges 38
39 charges in S Wales Existing charges Option 41 Option 42 Option 41 Capped Option 42 capped Tariff 72 ( 14,607) 1,291 1,291 1,292 1,291 Tariff 73 6,275 3,328 3,328 3,332 3,328 Tariff 74 79,108 1,945 1,945 1,948 1,945 Tariff 75 48,344 35,534 35,534 35,539 35,534 Tariff 76 ( 186) ( 186) ( 186) ( 186) Tariff 77 8,901 8,901 8,901 8,901 Tariff 78 3,398 3,398 3,398 3,398 Tariff Tariff Tariff 81 22,636 22,636 22,636 22,636 Tariff Tariff Tariff 84 9,917 9,917 9,930 9,917 Tariff , , , ,546 Note: customers marked with ** are currently CDCM and hence the existing charges are CDCM charges 39
40 Risks of future volatility 40
41 Risks of future volatility The main drivers of changes to prices from year to year are: Target revenue driven by price control allowance. There is more volatility in this year to year than under DPCR4 due to the removal of the volume driver which increases the risk of over/under recovery Peak demand on network and flows on network used by EDCM customers affects how the required revenue is split between EDCM and CDCM customers Marginal charges changes in loading on specific branches of the network affect these Individual customer changes to Agreed Capacities and usage at time of peak demand both have a direct effect on the customers charge Addition of new customer/closures 41
42 Risks of future volatility Consultation results are based on data that would have been used to set charges for 2010/11 i.e. current year We have re run our models on data that would be used to create charges for 2011/12 i.e. the indicative charges sent out prior to Christmas Two sets of results follow: 1. comparison of consultation results (2010/11 data) with results using 2011/12 data set but without the underlying tariff increase 2. comparison of consultation results (2010/11 data) with results on a 2011/12 data set (these charges will include the tariff increase of 22% in S West and 11% in S Wales) Note that 2. includes new customer not connected during 2010/11 42
43 Tariff 1 Tariff 2 Tariff 3 Tariff 4 Tariff 5 Tariff 6 Tariff 7 Tariff 8 Tariff 9 Tariff 10 Tariff 11 Tariff 12 Tariff 14 Tariff 15 Tariff 16 Tariff 17 Tariff 18 Tariff 19 Tariff 20 Option , , ,439 13, ,791 44,235 33,063 51,282 49, , ,342 59,732 70, , ,360 45, , charges in S West 1. Option 41 data only 236, , ,933 12, ,177 38,695 37,446 55,386 47, , ,514 48,516 98, , ,299 50, , Option 41 data tariff increase plus new customers 278, , ,357 15, ,090 48,575 42,557 65,144 57, , ,911 64, , , ,354 64,362 4,719 Note: customers marked with ** are currently CDCM and hence the existing charges are CDCM charges Option , , ,709 17, ,865 29,528 30,955 57,694 28, , ,721 30,011 80, , ,460 42, , Option 42 data only 321, , ,216 15, ,902 25,461 34,792 56,364 31, , ,109 27, , , ,011 48, , Option 42 data tariff increase plus new customers 395, , ,683 18, ,369 30,789 38,991 66,456 35, , ,225 35, , , ,510 61, ,
44 Option 41 charges in S West 1. Option 41 data only 2. Option 41 data tariff increase plus new customers Option Option 42 data only 2. Option 42 data tariff increase plus new customers Tariff Tariff 22 3,231 3,263 3,646 3,255 3,278 3,666 Tariff 23 1,159 1,176 1,384 1,171 1,184 1,395 Tariff Tariff 25 1,632 1,937 2,256 1,650 1,949 2,273 Tariff 26 15,178 13,298 16,328 15,402 13,450 16,532 Tariff Tariff 28 1,098 1,096 1,351 1,113 1,106 1,365 Tariff 29** 101, , ,180 85, , ,936 Tariff 30** 58,826 58,920 71,475 58,477 59,038 71,645 Tariff 31** 32,775 26,752 31,477 41,539 32,742 39,543 Tariff 32** 8,354 12,486 14,766 8,446 13,316 15,854 Tariff 33** 89,623 83,688 97, , , ,756 Tariff 34** 77,316 89, ,982 76,205 82, ,031 Tariff 35** 1,996 1,914 2,445 1,565 1,583 1,986 Tariff 36** 48,398 49,638 59,920 48,840 50,859 61,574 Tariff 37** 75,763 91, ,365 78,602 93, ,672 Tariff 38** 88,944 98, ,663 69,270 80,643 99,622 Note: customers marked with ** are currently CDCM and hence the existing charges are CDCM charges 44
45 charges in S West Option Option 41 data only 2. Option 41 data tariff increase plus new customers Option Option 42 data only 2. Option 42 data tariff increase plus new customers Tariff 39** 60,252 72,547 90,642 48,862 60,006 73,605 Tariff 40** 146, , , , , ,110 Tariff 41 1, ,261 1,025 1,005 1,276 Tariff 42 54,423 21,020 25,716 60,876 26,182 32,653 Tariff 43 2,627 2,490 2,746 2,642 2,501 2,759 Tariff Tariff 45 4,842 4,979 5,617 4,879 5,004 5,650 Tariff Tariff 47 1, ,090 1, ,101 Tariff 48** 94,638 93, ,891 92,260 90, ,151 Note: customers marked with ** are currently CDCM and hence the existing charges are CDCM charges 45
46 charges in S West Option Option 41 data only 2. Option 41 data tariff increase plus new customers Option Option 42 data only 2. Option 42 data tariff increase plus new customers Tariff 49 ( 2,180) 1,386 1,355 ( 2,180) 1,386 1,355 Tariff 50 ( 10,064) ( 4,613) ( 4,627) ( 10,064) ( 4,613) ( 4,627) Tariff 51 3,795 3,818 3,802 3,795 3,818 3,802 Tariff 52 ( 1,271) ( 3,194) ( 3,215) ( 1,271) ( 3,194) ( 3,215) Tariff 53 3,417 3,438 3,423 3,417 3,438 3,423 Tariff 54 ( 11,575) ( 14,048) ( 14,077) ( 11,575) ( 14,048) ( 14,077) Tariff 55 30,144 25,487 25,391 30,144 25,487 25,391 Tariff 56 11,595 11,681 11,631 11,595 11,681 11,631 Tariff , , , , , ,577 Tariff 58 14,104 14,208 14,147 14,104 14,208 14,147 Tariff 59 23,839 24,409 24,347 23,839 24,409 24,347 Tariff 60 8,734 8,893 8,856 8,734 8,893 8,856 Tariff 61 9,705 9,772 9,731 9,705 9,772 9,731 Tariff 62 3,014 3,032 3,019 3,014 3,032 3,019 Tariff 63 1,260 1,270 1,264 1,260 1,270 1,264 Note: customers marked with ** are currently CDCM and hence the existing charges are CDCM charges 46
47 charges in S West Option Option 41 data only 2. Option 41 data tariff increase plus new customers Option Option 42 data only 2. Option 42 data tariff increase plus new customers Tariff 64 6,927 6,914 6,885 6,927 6,914 6,885 Tariff 65 13,136 13,023 12,967 13,136 13,023 12,967 Tariff 66 4,683 4,150 4,133 4,683 4,150 4,133 Tariff 67 49,393 70,523 70,199 49,393 70,523 70,199 Tariff 68 9,738 10,045 10,007 9,738 10,045 10,007 Tariff 69 90,276 90,816 90,430 90,276 90,816 90,430 Tariff Tariff 73 10,454 10,934 10,886 10,454 10,934 10,886 Tariff 74 5,111 4,917 4,877 5,111 4,917 4,877 Tariff 75 13,708 13,892 13,833 13,708 13,892 13,833 Tariff 76 2,161 2,197 2,187 2,161 2,197 2,187 Tariff 77** 6,012 6,060 6,034 6,012 6,060 6,034 Tariff 78** 6,255 6,305 6,278 6,255 6,305 6,278 Tariff 79** 3,190 3,214 3,200 3,190 3,214 3,200 Tariff 81** ( 14,087) ( 28,018) ( 28,046) ( 14,087) ( 28,018) ( 28,046) Note: customers marked with ** are currently CDCM and hence the existing charges are CDCM charges 47
48 charges in S Wales Option /11 1. Option 41 data only 2. Option 41 data tariff increase plus new customers Option /11 1. Option 42 data only 2. Option 42 data tariff increase plus new customers Tariff 1 488, , ,267 1,710,432 1,875,560 2,134,264 Tariff 2 220, , , , , ,112 Tariff 3 765, , ,554 1,119,700 1,164,053 1,325,874 Tariff 4 150, , , , , ,795 Tariff 5 369, , , , , ,593 Tariff 6 271, , , , , ,307 Tariff 7 146, , , , , ,830 Tariff 8 132, , , ,853 97, ,439 Tariff 9 125,058 89, ,286 75,619 53,127 59,246 Tariff 10 18,315 14,997 17,020 14,577 12,812 14,432 Tariff 11 1,284,915 1,563,634 1,762, ,326 1,200,772 1,334,373 Tariff , , , , , ,806 Tariff , , , , , ,819 Tariff 14 67,765 61,279 67, ,825 94, ,917 Tariff 15 86,243 70,876 76, , , ,018 Tariff 16 58,214 50,416 56,409 65,736 54,424 61,092 Tariff , , , , , ,655 Tariff , , , , , ,492 Note: customers marked with ** are currently CDCM and hence the existing charges are CDCM charges 48
49 charges in S Wales Option /11 1. Option 41 data only 2. Option 41 data tariff increase plus new customers Option /11 1. Option 42 data only 2. Option 42 data tariff increase plus new customers Tariff , , , , , ,454 Tariff , , , , , ,304 Tariff 21 99,782 80,426 88,777 82,911 66,566 72,638 Tariff 22 45,236 39,964 44,041 39,992 34,907 38,069 Tariff , , , , , ,063 Tariff , , , , , ,634 Tariff 25 35,888 36,434 39,774 32,442 34,342 37,302 Tariff 26 72,060 87, , , , ,039 Tariff 27 69,981 80,703 90,385 63,553 74,364 82,868 Tariff , , , , , ,235 Tariff , , , , , ,722 Tariff 30 1,438,567 1,400,674 1,625, , , ,726 Tariff , , ,357 94,277 87,851 99,307 Tariff 32 1, Tariff Tariff 34 5,343 5,603 5,903 4,927 5,247 5,488 Tariff 35 2,761 2,080 2,330 2,361 1,781 1,982 Tariff 36 31,947 30,908 34,838 26,833 26,199 29,333 Note: customers marked with ** are currently CDCM and hence the existing charges are CDCM charges 49
50 charges in S Wales Option /11 1. Option 41 data only 2. Option 41 data tariff increase plus new customers Option /11 1. Option 42 data only 2. Option 42 data tariff increase plus new customers Tariff Tariff 38 2,521 2,431 2,622 2,282 2,232 2,389 Tariff 39 22,638 19,226 21,106 20,115 17,178 18,722 Tariff 40 1,566 1,511 1,681 1,328 1,309 1,447 Tariff 42 6,422 5,727 6,438 5,412 4,879 5,450 Tariff Tariff 44** 18,766 36,323 40,886 17,228 34,714 38,995 Tariff 45** 40,153 8,226 9,349 23,670 5,277 5,895 Tariff 46** 21,871 21,618 24,558 9,639 10,948 12,116 Tariff 47** 129,221 99, , ,891 67,561 76,443 Tariff , , , , , ,858 Tariff 49 2,606 2,420 2,696 2,231 2,093 2,314 Tariff 50 2,326 2,460 2,723 1,949 2,144 2,356 Tariff 51 16,923 24,888 27,245 13,360 21,895 23,716 Tariff 52 2,056 1,722 1,952 1,729 1,447 1,631 Note: customers marked with ** are currently CDCM and hence the existing charges are CDCM charges 50
51 charges in S Wales Option /11 1. Option 41 data only 2. Option 41 data tariff increase plus new customers Option /11 1. Option 42 data only 2. Option 42 data tariff increase plus new customers Tariff ,296 3, ,296 3,030 Tariff , , , , , ,935 Tariff 55 ( 657) 341 ( 2,000) ( 657) 341 ( 2,000) Tariff 56 4,899 8,853 6,379 4,899 8,853 6,379 Tariff 57 2,549 16,487 14,258 2,549 16,487 14,258 Tariff ,388 1, ,388 1,230 Tariff 59 5,793 6,308 4,920 5,793 6,308 4,920 Tariff 60 31,376 1, ,376 1, Tariff 61 3,729 5,238 4,382 3,729 5,238 4,382 Tariff 62 ( 4,309) ( 1,912) ( 2,889) ( 4,309) ( 1,912) ( 2,889) Tariff , , , , , ,790 Tariff 64 2,694 38,349 35,837 2,694 38,349 35,837 Tariff 66 ( 16,216) ( 8,860) ( 10,038) ( 16,216) ( 8,860) ( 10,038) Tariff 67 ( 14,201) ( 18,963) ( 19,482) ( 14,201) ( 18,963) ( 19,482) Tariff 68 ( 13,178) ( 2,337) ( 6,073) ( 13,178) ( 2,337) ( 6,073) Tariff 69 20,958 4,955 2,930 20,958 4,955 2,930 Note: customers marked with ** are currently CDCM and hence the existing charges are CDCM charges 51
52 charges in S Wales Option /11 1. Option 41 data only 2. Option 41 data tariff increase plus new customers Option /11 1. Option 42 data only 2. Option 42 data tariff increase plus new customers Tariff 70 4,654 6,613 5,496 4,654 6,613 5,496 Tariff 71 77,348 39,766 34,865 77,348 39,766 34,865 Tariff 72 1,291 15,658 6,226 1,291 15,658 6,226 Tariff 73 3,328 3,948 3,656 3,328 3,948 3,656 Tariff 74 1,945 29,552 23,939 1,945 29,552 23,939 Tariff 75 35,534 57,265 45,567 35,534 57,265 45,567 Tariff 76 ( 186) ( 110) ( 110) ( 186) ( 110) ( 110) Tariff 77 8,901 13,883 11,523 8,901 13,883 11,523 Tariff 78 3,398 8,138 7,204 3,398 8,138 7,204 Tariff ,461 1, ,461 1,952 Tariff ( 68,659) ( 77,629) 543 ( 68,659) ( 77,629) Tariff 81 22,636 1, ,636 1, Tariff ,755 1, ,755 1,189 Tariff ,832 1, ,832 1,558 Tariff 84 9,917 19,846 13,788 9,917 19,846 13,788 Tariff ,546 16,710 6, ,546 16,710 6,069 Note: customers marked with ** are currently CDCM and hence the existing charges are CDCM charges 52
53 Risks of future volatility There are two areas where the individual customers behaviour affect their charge: Agreed Supply Capacity whilst it needs to be high enough for the sites peak demand, there is a cost associated with having an Agreed Supply Capacity greater than necessary during peak periods generally referred to a Super Red. The movements in this between 08/09 and 09/10 has been assessed as follows 53
54 Movement in Super Red s Super Red s are used in the allocation of Indirect Cost and allocation of 20% of the residual revenue 54
55 Treatment of pre 2005 generation - update 55
56 Treatment of pre 2005 generation DPCR5 removed the exemption on pre April 2005 DG from paying use of system charges Determination of the appropriate test for undue discrimination and assessment of the contractual position of these generators has been undertaken Ofgem have provided no guidance on how undue discrimination should be interpreted in this regard WPD made a modification application on 17th June to integrate pre and post 2005 DG from 1 st October 2010 Ofgem requested that this was withdrawn to facilitate an Ofgem consultation on these issues Ofgem consulted on these issues between 21/07/2010 and 01/09/2010 There was a meeting between Ofgem and DNOs to ensure a common understanding of the issues needing decisions/guidance on 7 th September 56
57 Treatment of pre 2005 generation There are three key issues that need decisions/guidance: Principles that should be followed in deciding whether compensation is due and if so how it should be calculated If compensation is due, whether this should be an unbundled one-off payment to the generator or whether it should be a bundled discount to a use of system charge From what date should charges apply to pre April 2005 EHV generators Ofgem issued a decision on the second of these on 23 rd August requiring an unbundled solution The third issue was referred to in the decision letter on EDCM timelines issued on 22 nd September which stated Distributed generators (DG) connected at EHV who connected on pre-april 2005 terms will be subject to the arrangements for DG customers that will come into effect on the revised implementation date of 1 April
58 Treatment of pre 2005 generation We await Ofgems decisions on what, if anything should be compensated for We continue to seek changes, where necessary, to contractual arrangements between WPD and generators to facilitate charging once a decision has been made 58
59 Publication of EDCM model 59
60 Publication of EDCM model We believe that there are significant benefits to customers if the EDCM model were published: Customer can better understand the components of the charge Customer can make initial assessment of the impact of changing their usage at peak times or their agreed capacity Customers can start to see the impact of changes made by others connected near to them Customers can assess the impact of changes they may seek to make to the methodology under open governance However, the Utility Act prevents publication of data without the customers consent A licence requirement to publish would allow these models to be available, however Ofgem are not proposing to seek such a change 60
61 Publication of EDCM model As little progress seems to be being made in unlocking this issue, we will be sending out information to each EDCM customer detailing the input data to the model and the components of resulting charges Where there is a linkage between input data for customers and the components we will identify this to allow users to make some assessment to the impact of their future behaviour on charges We will also seek to understand what if any concerns they have with publication and ask for their permission to publish data about their site 61
62 Timetable/next steps 62
63 Timetable/next steps Feedback from today please DNO consultation by 01/02/2011 Submission to Ofgem 01/04/2011?? Further WPD workshop to consider Ofgem consultation May 2011?? Indicative charges by/before 31/12/11 Implementation 01/04/12 63
64 Any Questions? 64
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