Electricity market summary, week ending 24 July

Wholesale electricity market summary for the week ending
24 July 2005

17-Jul 18-Jul 19-Jul 20-Jul 21-Jul 22-Jul 23-Jul 24-Jul
Sun Mon Tue Wed Thu Fri Sat Sun

Daily Average Reference Price (c/kWh)
Otahuhu 7.22 7.78 7.85 7.91 8.10 8.26 7.38 6.76
Haywards 7.56 7.94 7.90 7.96 8.22 8.31 7.60 7.03
Benmore 7.71 7.92 7.78 7.85 8.09 8.17 7.64 7.12
Haywards 1 month ago 7.81 8.03 8.42 8.18 7.97 8.34 9.15 9.35
Haywards 1 year ago 0.77 2.00 3.15 2.83 3.75 3.54 2.74 2.47

M-co Electricity Price Index (c/kWh)
New Zealand 7.66 7.54 7.58 7.69 7.78 7.94 7.96 7.89
New Zealand 1 month ago 8.09 8.13 8.11 8.11 8.10 8.05 8.17 8.39
New Zealand 1 year ago 3.01 2.38 2.37 2.36 2.58 2.74 2.85 3.06

NZ Demand (GWh)
Total 101.2 115.3 117.3 116.8 117.8 117.0 103.6 98.3
7 days ago 101.9 121.3 119.0 114.5 113.8 110.8 104.3 101.2
7 day change -0.6% -5.00% -1.41% 2.02% 3.56% 5.57% -0.68% -2.90%
Total 1 month ago 99.7 109.5 112.7 110.7 110.3 108.2 98.2 98.2
Total 1 year ago 102.8 116.8 120.4 117.4 122.3 121.9 110.6 107.6

NZ Generation Output (GWh)
NI Hydro 19.2 21.8 21.4 21.1 21.2 20.8 17.5 15.7
NI Other 47.6 52.2 53.3 53.3 53.8 54.1 51.3 50.1
SI Hydro 37.6 45.0 46.2 46.0 46.5 45.2 38.0 35.6
Total 104.5 118.9 121.0 120.3 121.5 120.2 106.8 101.4

NI Hydro 1 month ago 16.2 21.6 22.0 22.7 22.1 23.2 19.6 19.3
NI Other 1 month ago 49.3 53.8 53.7 53.0 52.9 53.4 49.9 50.6
SI Hydro 1 month ago 37.3 45.5 46.9 42.9 43.4 44.5 43.2 43.5
NI Hydro 1 year ago 31.1 31.9 32.9 30.8 31.2 31.0 29.1 29.1
NI Other 1 year ago 27.4 32.3 34.1 32.7 35.9 36.6 30.0 28.7
SI Hydro 1 year ago 46.3 55.4 56.5 56.9 58.3 57.4 54.4 52.5

Inter-Island Transmission Transfers (GWh)
South to North 0.3 2.1 3.1 3.4 3.6 3.0 0.6 0.4
North to South 6.6 3.7 1.5 1.3 1.2 0.9 3.3 5.1
South to North 1 month ago 0.7 2.9 5.7 1.7 1.4 1.9 1.8 3.1
South to North 1 year ago 6.7 11.8 12.8 13.2 13.3 13.2 14.3 12.8

Hydrology (GWh)
Storage 2144 2133 2114 2089 2062 2039 2027 2016
% of average 84% 84% 84% 83% 82% 81% 81% 81%
Inflows (GWh/day) 47 47 47 47 40 38 40 40
% of average 85% 86% 85% 85% 73% 69% 72% 72%
Storage % of average 1 month ago 86% 86% 86% 87% 87% 86% 86% 86%
Storage % of average 1 year ago 138% 137% 136% 135% 134% 133% 132% 130%

The M-co Electricity Price Index is a demand weighted seven-day rolling average that smoothes ut price volatility distortions. The wholesale electricity price differs from the retail electricity rice, which is the price domestic consumers see on their electricity bill. The wholesale price is nly one of the factors that influence retail prices.

The above information has been prepared for the purposes of media release only. All due care has been taken in the production of this
information; however, M-co accepts no responsibility or liability for the accuracy of the information contained in this media release.

ENDS

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