Datalogger / DMV Modification Proposals - Summary
Simon Trivella – 26th August 2010Distribution Workstream - Elexon
UPDATE
Content• Reminder of June 2010 presentation and potential Modification Proposals
• Modification Proposal 0224 (DM Elective) Update
• Daily Read statistics– DM population changes with DME switching (various scenarios)
• Update on WWU proposed Modification Proposals
UPDATE
Background / Drivers• The world is changing – increase in AMR usage and new supplier
obligation increases the number of devices attached to meters– More options for obtaining data
– More cases of devices being disconnected resulting in lost data and therefore data not being usable
• DM elective (DME) due to be introduced in November 2010– Consistent with meter reading being a competitive activity
• Modification Proposal 0258A already implemented which reflects this changing world
– Allows Transporter to procure data from 3rd parties
June 2010
Background / Drivers• DM Unbundling to be considered / developed
– Potential lengthy timescales
• WWU is drafting three Modification Proposals– Priority of position for Transporter equipment
– Removal DM voluntary (DMV) sites from DM liability regime
– Removal of DMV regime when DME is operational and after transition period
• Detailed discussions to take place at June 2010 Distribution Workstream
• Feedback / comments welcome in the interim period
June 2010
DM Elective (DME) Update• Implementation Date confirmed as 21st November 2010
– Phase 1 (21st November 2010)
• AQ > 5,860,000 kWh (200,000 tpa)
– Phase 2 (21st November 2011)
• AQ > 2,196,000 kWh (75,000 tpa)
– Phase 3 (21st May 2012)
• AQ > 732,000 kWh (25,000 tpa)
• All Phases subject to a maximum DME count of 25,000
• Phase 2 & 3 dates can be later if Transporters determine necessary
• Modification Proposal required for earlier Phasing
UPDATE
Daily Read StatisticsUPDATE
• DM Sites – All Distribution NetworksDME
Phase FIRM SNI TNI Total
n/a 199 270 10 479
n/a 37 15 1 53
1 134 193 5 332
1 102 289 15 406
1 63 261 13 337
2 52 46 2 100
3 17 13 0 30
n/a 18 17 1 36
622 1,104 47 1,773
<732,000
Total
>=2,196,001 and <5,860,000
>=732,001 and <2,196,000
Load Band kWh
>=58,600,000 mandatory
>=58,600,000 voluntary
>=29,300,000 and <58,600,000
>=14,650,000 and <29,300,000
>=5,860,000 and <14,650,000
532
1,241
30.0%
70.0%
Daily Read StatisticsUPDATE
• 532 (30%) of current DM sites are above DM Mandatory threshold– 1,241 of DM sites are below the Mandatory threshold (includes Interruptibles)
• 1,151 (65%) of sites are Interruptible Supply Points– 296 of these would remain DMM if Firm
• Only 36 (2%) sites have AQ <732,000 kWh (not eligible for DME)
Potential DM Population ChangesUPDATE
DM population with 100% 'switch' to DM Elective
0
250
500
750
1,000
1,250
1,500
1,750
2,000
Aug-10
Oct-10
Dec-10
Feb-11
Apr-11
Jun-1
1
Aug-11
Oct-11
Dec-11
Feb-1
2
Apr-12
Jun-1
2
Aug-12
Date
Supp
ly P
oint
s
DMV (100%)
DME (100%)
GT DRE
Potential DM Population ChangesUPDATE
DM population with 50% 'switch' to DM Elective
0
250
500
750
1,000
1,250
1,500
1,750
2,000
Aug-10
Oct-10
Dec-10
Feb-1
1
Apr-11
Jun-1
1
Aug-11
Oct-11
Dec-11
Feb-1
2
Apr-12
Jun-1
2
Aug-12
Date
Supp
ly P
oint
s
DMV (50%)
DME (50%)
GT DRE
Potential DM Population ChangesUPDATE
DM population with 10% 'switch' to DM Elective
0
250
500
750
1,000
1,250
1,500
1,750
2,000
Aug-10
Oct-10
Dec-10
Feb-1
1
Apr-11
Jun-1
1
Aug-11
Oct-11
Dec-11
Feb-1
2
Apr-12
Jun-1
2
Aug-12
Date
Supp
ly P
oint
s
DMV (10%)
DME (10%)
GT DRE
Priority of position for Transporter equipment• Gives priority of position to Transporter dataloggers and data recorders
installed for UNC purposes
• UNC refers to IGE Meter Recommendations– Installation of Supply Meter only
– IGEM/GM/7A proposes that loggers used for fiscal purposes should have priority
• This does not apply to equipment used for other purposes (e.g. Demand Estimation)
• We recognise work to develop standard MPU contract
• For historical reasons Transporter equipment tends to have priority of position
• Modification raised to regularise situation and ensure that the position is clear within the UNC
June 2010
Priority of position for Transporter equipment• Proposal placed on hold
– Feedback received at previous Workstreams
– Modification Proposal 0258A offers level of protection
• Revisit at a later stage
UPDATE
Removal DM voluntary sites from DM liabilities• DMV sites can be from 73,200 kWh to 58,599,000 kWh
• Not material to daily balancing requirements
• Daily settlement data requirements are D+5
• Removal of DMV from DM liability regime would mean that networks concentrated on the DMM sites that are material to daily balancing
June 2010
Removal DM voluntary sites from DM liabilities• Feedback from Distribution Workstream members
– Alignment with “competitive” alternative?
– Reduction in charges?
• Competitive alternative (currently) restricted to >732,000 kWh– This would leave an obligation on a small population of DMV
• No plans to align with DME rollout
• Proposed amendments– Limit removal to D+1 11am Read Submission (UNC TPD M 5.1)
– Reads not provided with D+5 remain subject to liabilities (UNC TPD M 5.2.3)
– No changes to rollout
• “big bang” approach
UPDATE
Removal of DMV regime• Once competitive activity established then the bundled service should cease
to be an obligation– Transporters could act as a DM(E)SP (outside of UNC arrangements)
• Consistent with meter reading being competitive activity
• DM Elective will provide competitive alternative to DMV
• Phased approach consistent with DME rollout
• Transition period of [3] months following each Phase– 1st Phase transition period of [6] months
• After transition period all DMV sites become DME or NDM
June 2010
Removal of DMV regime• Generally positive feedback from Distribution Workstream members
– Issues around <732,000 kWh sites as not eligible for DME
• Proposal updates– Transition period following Phase 1 to be 6 months
– Transition period following Phase 2 & 3 to be 3 months
– 73,200kWh to 732,000kWh also to be removed 3 months after Phase 3
• No competitive alternative (currently)
• Only 36 sites nationally (18 Firm & 18 Interruptible)
• Majority of sites are “drifters” (i.e. demand reduced)
• Consider option to allow existing ‘small’ DMVs to become DME?– Is this a viable option?
UPDATE
Next steps• Further comments / feedback welcome
• [Draft] Modification Proposals to be raised in Sept/Oct 2010– Further Distribution Workstream discussions as necessary
UPDATE
Datalogger / DMV Modification Proposals - Summary
Simon Trivella – 26th August 2010Distribution Workstream - Elexon
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