National
Thu, 30 Jun 2005

Today's snapshot - Thu, 30 Jun 2005 (Updated 11:30 pm)

Victoria
Thu, 30 Jun 2005
 
 
 
 
 
 
Summary of the latest weekly market analysis


 

 

 

 

 

 

The total cost of ancillary services for the week was $569,000 or 0.6 per cent of the total turnover in the energy market. The cost for lower 5 minute services was up by nearly $200,000 on the previous week as a result of a network outage in Victoria for the latter half of the week. The cost for ancillary services in Tasmanian totalled $130,000 or 0.9 per cent of the energy market turnover for that region.

Regulation prices spiked for one despatch interval to $10,000/MW in Tasmania on Wednesday evening when every unit with an offer for regulation was inadvertently made unavailable.

Figure 4: volume weighted average frequency control ancillary service prices (excluding Tasmania)

 
Raise
Lower
 
6
sec
60
sec
5
min
Reg
6
sec
60
sec
5
min
Reg
Last week($/MW)
1.31
0.42
0.68
0.92
0.23
1.44
4.96
1.62
Previous week ($/MW)
1.20
0.45
0.70
0.86
0.22
0.24
0.70
1.52
Last quarter ($/MW)
2.36
1.50
1.41
1.32
2.28
2.13
3.48
1.70
Market cost($1000s)
64
20
44
22
2
39
210
38
% of energy market
0.08
0.03
0.06
0.03
0.00
0.05
0.28
0.05

Figure 5: Tasmanian volume weighted average frequency control ancillary service prices

 
Raise
Lower
 
6
sec
60
sec
5
min
Reg
6
sec
60
sec
5
min
Reg
Last week($/MW)
1.63
0.48
0.78
1.34
0.20
0.22
0.67
1.46
Previous week ($/MW)
2.94
0.57
0.79
1.52
0.26
0.31
1.25
1.62
Last quarter ($/MW)
2.36
1.50
1.41
1.32
2.28
2.13
3.48
1.70
Market cost($1000s)
82
24
52
32
1
1
14
34
% of energy market
0.07
0.02
0.04
0.03
0.00
0.00
0.01
0.03

Figure 6 shows the daily breakdown of price for each frequency control ancillary service. It also includes the cost of services sourced locally and in Tasmania.

Figure 6: daily frequency control ancillary service prices

Figure 7 shows the weekly participation in each of the ancillary service markets on a regional basis.

Figure 7: regional participation in ancillary services

Figures 8 and 9 show 30-minute prices for each of the ancillary services.

Figure 8: prices for raise services

Figure 9: prices for lower services

Figures 10 and 11 show the 30-minute Tasmanian price for each or the ancillary services.

Figure 10: Tasmanian prices for raise services

Figure 11: Tasmanian prices for lower services

Figures 12 and 13 present for both raise and lower services the requirement for each service over the week.

Figure 12: raise requirements

Figure 13: lower requirements

Figures 14 and 15 present for both raise and lower services the Tasmanian requirement for each service over the week.

Figure 14: Tasmanian raise requirements

Figure 15: Tasmanian lower requirements

Long-term analysis

This graph shows weekly ancillary services costs and as a percentage of the turnover in the energy market since the beginning of the year. Tasmanian costs are included from 29 May 2005.

   

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