182 
The N.Z. Journal of Science and Technology. 
[Aug. 
The peak load oh the composite curve representing an interconnected 
system is 25,305 kilowatts, occurring approximately at 9 a.m., whereas it 
will be noted that the individual peaks occur at various times between 
9 a.m. and 9 p.m. This means that with the present system of isolated 
stations there must be provided an excess of 7,062 kilowatts to meet these 
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Composite Load-curve for Fourteen New Zealand Electric-power Stations, for 
30th September, 1920. 
Total units output, 413,000 ; peak load, 25,305 kilowatts ; average load, 17,200 kilo¬ 
watts ; load-factor, 68 per cent. 
individual peak loads, or 27-8 per cent, of the composite demand ; and there 
actually was installed 16,750 kilowatts of excess plant, or 66*2 per cent, 
of the combined maximum demand. 
The total installed capacity for the whole of New Zealand, including 
Wellington and Auckland tramways, is 54,805 kilowatts, and the sum of 
