ENG-1978 — Page 207

PUBLIC WORKS AND UTILITIES

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Company Limited (PEPCO), an enterprise financed 60 per cent by Esso and 40 per cent by China Light. PEPCO owns the power stations at Tsing Yi ‘A' (720 MW), Tsing Yi 'B' (842 MW) and Hok Un ‘C' (240 MW). Operation of these plants is in the hands of China Light, which also has its own stations Hok Un ‘A' and ‘B' (total 350 MW) and a number of diesel sets (total 6 MW).

The Hong Kong Electric Company has a generating station at Ap Lei Chau with a generating capacity of 806 MW, following the commissioning of a 50 MW gas turbine unit in November, 1978. Three more 125 MW generating units will be commissioned in 1979, 1980 and 1981 which will complete the development of the entire station (1,181 MW).

The installed capacity of the Cheung Chau Electric Company is 7 MW.

Transmission is carried out at 132 kV and 66 kV, while 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. For bulk consumers, supply is available at 33 kV and 11 kV.

Main electricity statistics for 1978, as well as electricity sales figures for 1976 to 1978, are shown in Appendix 34.

Gas

12

The Hong Kong and China Gas Company Limited supplies Towngas to the urban areas of Hong Kong Island, Kowloon and the New Territories.

Towngas is available throughout the island with the exception of the Shek O peninsula. The area of supply extends to Chai Wan in the east and to Aberdeen, Repulse Bay and Stanley in the south. The company is also in the process of extending its services to Ap Lei Chau. Towngas is supplied throughout Kowloon, including Kwun Tong and the rapidly developing area of north-east Kowloon. In the New Ter- ritories, the area of supply includes Kwai Chung, Tsuen Wan and the neighbouring island of Tsing Yi. Towngas is also supplied throughout Sha Tin.

The company's production station is located at Ma Tau Kok in Kowloon. Hong Kong Island is supplied by four submarine pipelines, the company having laid two 400 millimetre-diameter pipelines under Victoria Harbour in 1978 to supple- ment two 250 millimetre-diameter pipelines laid in 1958. Towngas is produced in six modern cyclic naphtha reforming plants, with a total installed capacity of 935,000 cubic metres a day. Two additional units, each rated at 283,000 cubic metres a day, are now under construction and are scheduled to be commissioned early in 1980.

Towngas is distributed at a calorific value of 17.27 MJ/m3 and a specific gravity of approximately 0.56. Gas is sold on the thermal basis (one therm=105.5 megajoules). Towngas sales in 1978 amounted to 23.7 million therms (2.5 million gigajoules) compared with 19.7 million therms (2.08 million gigajoules) in 1977.

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