D.—l

78

Table No. 3.—Details of Power Requirements, &c.— continued.

Only a proportion of the total power now in use in each district could, of course, be relied on a 8 load for a large power-scheme, the determining considerations of that proportion being,— (a.) The area covered by the distributing-mains : (b.) The price at which power can be sold, as compared with the present cost of generation ; (c.) The first cost to the consumer of the electric-motor installation. To deal with these points seriatim the transmission-lines proposed for the first development in each district would supply the main cities and suburbs, and all installations within, say, five miles on either side of the transmission-lino. Taking the four main cities as the primary distributing centres, Table No. 3 herewith shows the actual power now in use in each within the area of distribution, including all suburbs, and amounts to the following totals : — Horee-power, Wellington .. . . . . . . . . .. .. 25,600 Auckland .. .. .. .. .. .. .. .. ■ 22.400 Christchurch .. .. .. .. .. .. .. 15,500 Dunedin .. .. .. .. .. .. .. .. 13.200 Each of these centre* thus shows ample room for a development of 10,000 h.p. or more of cheap power.

Wellington. Auckland. j Christchurch. Dunedin. Electric motors .. .. .. H.p. 5,580 1,400 2,500 6,200 Tramways,— Mileage, single track .. .. .. 28 Cars .. .. .. .. .. 81 Power installed .. K.w. 3,000 Output per annum .. .. units 4,418,595 Load-factor .. .. ..Percent. 19-4 Working-cost .. .. Pence per unit 0-795 Interest and capital charges „ 0-472 Total cost .. .. „ 1,267 Total interest, sinking fund, and depreciation provided for in the above capital charges .. .. .. Per cent. 6-8 Electric lighting, — Total inhabited houses .. .. .. 15,200 Houses now supplied .. .. .. 4,147 Proportion supplied .. .. 28-1 Units sold for lighting .. .. .. 1,320,000 Charges per unit .. .. .. 7d. to 5d. Revenue from lighting .. .. .. £34,616 Average revenue .. Pence per unit 6-29 Average units per consumer .. .. 318 Average revenue per consumer . . .. £8 6s. Street-lighting,-— Units used per annum .. .. .. 562,000 Total revenue .. .. .. £8,877 Average revenue .. Pence per unit 3-8 Electric motors, &c. Total power .. .. H.p. 2,937 Units sold for power .. .. .. 851,158 Load-factor of motors .. . . Per cent. 3-3 Charges per unit .. .. .. 3d. to 1 Ad. Revenue from motive power .. .. £9,447 Average revenue .. Pence per unit 2-66 Average cost of power to consumer per horsepower installed, per annum . . .. £3 4s. Electric-supply station, - Power installed . . . . K.w. 2,500 Total capital outlay .. .. £218.0!") Capital outlay per k.w. .. .. .. £87 Units generated per annum .. . . 2.770,379 Units sold per annum .. .. .. 2.018,526 Efficiency of distribution . . Per cent. 73-0 Load-factor .. 12-6 Working-costs .. Pence per unit sold 3-08 Interest and capital charges 1-98 Total costs .. .. ., 5-06 Total revenue . . .. „ £44,814 Average revenue .. ,, 5-36 Total interest, sinking fund, and depreciation provided for in above capital charges 7-ti I 36 92 . 2,100 6.386,082 34-8 14,802 400 2-7 £6,110 £10 15s. ' £21 £1,984 675 £63.809 £95 496,000 8-4 2-00 I -30 3-30 £7,100 3-52 1-2 51 43 1,500 2,654,285 20-2 0-81 0-42 1-23 7-2 13.138 337 2-9 369.620 6d.to3^d. £7.854 5-1 1,060 £23 4s. Nil 520 412.314 8-9 3d. to 2Jd. £4,379 2-55 £8 8s. 950 £74.113 £78 987.580 782.006 79-2 11-8 2-60 1-40 1-0(1 £ 12.234 4-24 6-2 21 43 (say) 1,000 2,153,249 24-6 0-54 0-44 0-98 8-0 13,130 820 6-2 742,000 5d. to Id. £9,247 3-0 905 £11 6s. 102.000 £1,620 3-8 3,000 3,860,000 14-6 2d. to id. £16,669 0-58 £3 2,000 £265,200 £132 8,570.000 6.855.000 80-0 49-0 ii-Ki 0-44 0-84 £28.112 0-98 4-9