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10 September 2009 energynetworks.orgenergynetworks.org 1
Common Methodology Group Work
PRESENTED BY OLIVER DAY
Common Distribution Charging Methodology
Impact Analysis
10 September 2009
Caveats…
• Based on individual DNO averages• Need to consider your typical usage
• Common model – DNO specific inputs• Different end user behaviour• Different costs
• Current DNO models may be very different, resulting in sometimes opposing starting positions
10 September 2009 energynetworks.org
Domestic Unrestricted
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Domestic Two Rate
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Small Non Domestic Unrestricted
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Small Non Domestic Two Rate
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LV Medium Non Domestic
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LV HH Metered
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HV HH Metered
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NHH UMS
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HH UMS
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LDNO Charges
• Charges based on end user tariffs• IDNO charged end user tariff with discount• Discount based on IDNO boundary voltage• Discounts applied using ‘portfolio’ approach
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LDNO LV: LV End User Discount
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LDNO HV: End User Discount
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Time bands
• 3 time bands: Green, Amber and Red • Vary from DNO to DNO • Reflect the DNO’s network usage• Weekday and weekend
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Weekday
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* EDF’s time bands are in GMT for weekdays, all other DNOs are in UK clock time
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Weekend
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All weekend time bands are in UK clock time
