1. DSR Volumetrics
Workgroup 3
10 September 2014

2. Background
Following a request from the DSR workgroup we have created some volumetric’s to show how much potential demand reduction could be available on any one day for DSR
The analysis reflects a mixture of data requested from each of the distribution networks and from National Grids systems
Only Daily Metered(DM) sites that have a system offtake quantity (SOQ) of above 2 million therms per annum are included
Gas fired generation are currently excluded

3. Scenarios / Assumptions
For the purpose of these volumetric’s we have created a base scenario (assumption) for each site this is equal to 50% of their (SOQ) figure. We believe this provides an overall more realistic assumption for the available volume
OCM minimum trade size (100,000 kWh) – i.e if the volume in any scenario drops below this the site is excluded in that scenario
Scenarios used:
Base - 50% of SOQ figures
50% of Base Available
20% of Base Available
10% of Base Available
5% of Base Available

4. Analysis Example
All figures shown are in GWh (0.100 is the minimum OCM trade)
Names
DM SOQ
Base Scenario
50% Scenario
20% Scenario
10% Scenario
5% Scenario
Site 1
6.60
3.30
1.65
0.66
0.33
0.17
Site 2 2 1
0.50
0.20
0.10
0.05
Site 3
1.13
0.56
0.28
0.11
0.06
0.03

5. Estimated DSR Volume Availability
Scenarios
Estimated Volume Available (GWh)
Number of sites
Base - 50% of SOQ figures
240
423
50% of Base Available
108
260
20% of Base Available 34
109
10% of Base Available 13 55
5% of Base Available 4 19

6. Estimated DSR Volume Availability

7. Potential DSR Availability (sites)