LAND, PUBLIC WORKS AND UTILITIES
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The government's arrangments for monitoring the operations of the power companies were reviewed by a firm of independent professional consultants in 1983. The consultancy report, published in March 1985, confirmed that the monitoring arrangements in the past had been adequate and appropriate. Nevertheless, the consultants also offered a number of recommendations on how the operational aspects of the monitoring process could be improved. A special working party responsible to the Secretary for Economic Serv- ices was set up to develop the recommendations. The working party's report was sub- mitted to the Executive Council and the consultants' recommendations have since been implemented.
In Kowloon and the New Territories, electricity is supplied by CLP's three affiliated generating companies - Peninsula Electric Power Company Limited (PEPCO), Kowloon Electricity Supply Company Limited (KESCO) and Castle Peak Power Company Limited (CAPCO). CLP has a 40 per cent stake in each of these affiliated companies, with the remaining 60 per cent being owned by Exxon,
PEPCO, KESCO and CAPCO have operating service agreements with CLP under which CLP constructs, commissions, operates and maintains the electricity generating facilities for these companies. The generating facilities include Tsing Yi ‘A' (720 MW) and Tsing Yi 'B' (800 MW) which are owned by PEPCO; Hok Un (264 MW) and Castle Peak ‘A' (1 640 MW) which are owned by KESCO; and the Castle Peak 'B' (2 031 MW) which is owned by CAPCO. The total installed capacity at the end of 1988 was 5 455 MW.
The Castle Peak, 'B' station is not yet fully completed. Work is in progress to add another 677 MW dual coal/oil fired units to it to bring the total generating capacity to 2 708 MW. When the 'B' station becomes fully operational in early 1990 it will, together with the adjacent 'A' station, make the Castle Peak Power Station complex the largest of its kind in Southeast Asia.
CLP's transmission system operates at 400 kV, 132 kV and 66 kV, and distribution is effected mainly at 33 kV, 11 kV and 346 volts. The supply is 50 hertz alternating current, normally at 200 volts single phase or 346 volts three phase.
To serve its consumers, CLP has more than 150 primary and over 5 176 secondary substations in its transmission and distribution network. An extra high voltage trans- mission system at 400 kV to transmit power from the Castle Peak power stations to the various load centres was recently completed. This 400 kV network comprises two transmission rings. One ring, a primary ring encircling the New Territories, consists of 90 kilometres of double-circuit overhead lines and four extra high voltage substations at Lei Muk Shue, Tze Wan Shan, Tai Po and Yuen Long. The other ring consists of 22 kilometres of cable circuits linking the major sub-stations at Tze Wan Shan, Tai Wan and Lai Chi Kok.
In HEC's supply areas, electricity is supplied from the Ap Lei Chau Power Station and Lamma Power Station with a combined installed capacity of 2 005 MW at the end of 1988. The Ap Lei Chau Power Station, with an installed capacity of 500 MW, is made up of four 125 MW oil-fired generating units. The Lamma Power Station, at this stage, consists of three 250 MW and two 350 MW dual coal/oil fired units and one gas turbine of 55 MW. There are plans to add a further 350 MW unit to Lamma in the early 1990's.
HEC's transmission system operates at 275 kV, 132 kV and 66 kV and distribution is effected mainly at 11 kV and 346 volts. With the exception of a small proportion of 132 kV overhead transmission lines, all supplies are transmitted and distributed by underground or submarine cables. The supply is 50 hertz, 200 volts single phase and 346 volts three phase. Supplies at high voltage are also made available to consumers.