77

T).—l

This figure also does not include the 22,452 h.p. of electric motors already installed, as these are supplied from the other prime movers included in the above total; but this figure is of importance in indicating the amount of motive power in the Dominion which is already applied electrically. Of this electric-motor power 22,000 h.p. has been installed during the past six weeks —that is, under present conditions 3,600 h.p. of electric motors are being installed per annum.

Table No. 2. —Comparison of Total Power (exclusive of Railways) in Use in New Zealand in 1904 and 1910.

In Table No. 2 herewith the total power now installed in em-h district is compared with that in 1904, as published in Mr. P. S. day's report (parliamentary paper, 1904, D. Iα). The average increase for tin- si.\ years is 13-2 per cent. —about 2 per cent, per annum. But the progress of the centres which offer the most likely markets for power-development is much larger than the average —viz., Canterbury . . . . . . . . . . 26-7 per cent, in 6 years. Wellington .. .. .. .. .. 36-2 Auckland District has progressed steadily (12-3 per cent.), and Southland shows a growth of 10-8 pe t cent, for the six years. Timaru District, showing an increase of 90-5 per cent., is adjacent to the Canter, bury District, and would be supplied ultimately from the same power-scheme. The. figures for Otago are instructive—viz.. a reduction of 4,458 h.p. It must be noticed that the latter figure does not include 6,382 h.p. of electric motors, of which 5,381 h.p. are supplied from the Waipori water-power system. Undoubtedly the Otago District has progressed industrially, and has not retrogressed, but the introduction of electric power with the consequent economies in direct application has enabled the greater industrial requirements to be met by a smaller rated horse-power of prime movers, showing the influence of the load-factor on the power installed, a point that will be discussed in dealing with each proposed power-system.

Table No. 3.—Details of Power Requirements and Costs of New Zealand Cities, including Suburbs, Year ended 31st March, 1910.

1904. (Mr. Hay's Report.) Horse-power. 191(1. Horse-power. Percentage. Auckland Hawke's Bay Taranaki Wellington .. Nelson South Nelson North Marlborough Westland Canterbury .. Timarujjt., .. Otago £, . . .Southland| 51,603 9,888 9,084 28,568 8,724 3,699 2,615 7,156 13,576 3,774 27,741 14,160 57,973 11,008 10.415 38,921 8,393 3.491 3,13S 7.780 17.179 7,189 23,283 15,688 Inc. 12-3 ., 11-4 „ 15-8 „ 36-2 Dec. 3-8 5-6 Inc. 20-0 „ 8-7 „ 26-7 „ 90-5 Dec. 16-0 Inc. 10-8 Total 180,588 180,588 204,458 204,458 Inc. 13-2 Inc. 13-2

Wellington. Auckland. Christchurch. | ] Uunedin. Population Present power in use, — Steam-engines Gas and oil engines Pumping water and sewerage Harbours and docks Railway workshops H.p. 76,390 97,929 78,605 62,584 17,500 6,420 1,000 560 120 14,500 5,900 660 260 80 10,800 3.360 450 500 440 9,800 2,400 300 460 240 Total prime movers .. 25,600 22,400 15,550 13,200