CEM (Macau)

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Companhia de Electricidade de Macau
Industry Electrical power
Founded 1972 (1972)
Headquarters Municipality of Macau
Key people
Xu Kaicheng (Chairperson)
João Marques da Cruz (Vice Chairperson)
Bernie Leong (CEO)
Products Electricity
Services Electricity distribution and transmission
Website www.cem-macau.com
CEM Headquarter
CEM Taipa Service Centre

Companhia de Electricidade de MacauCEM, S.A. (CEM; Chinese: 澳電) is a private public utility company with a sole concession to transmit, distribute, sell high, medium and low voltage of electricity in Macau. Besides, CEM owns an installed generation capacity of 472 MW.


From 1906 to 1972, the electricity supply service was managed by the Macao Electric Lighting Company Ltd. (now Melco International Development), which had its headquarters in British Hong Kong. In 1972, due to non-fulfilment of its concession contract with the former Portuguese administration, the company was replaced by CEM.

CEM was restructured with the former Portuguese administration's support in 1982. In 1985, CEM signed the 25-year concession contract. It has since scored achievements in the areas of cost-effectiveness and technology.

In November 2010, the Macau SAR government and CEM signed the Power Supply Contract Extension for 15 years. The new contract terms came into effect on 1 December 2010.


Before 1987, the largest shareholder of CEM was the Government of Macau. But ever since that, the government had been reducing its share until the current 8%.[1] Shares of CEM are currently owned by Sino French Energy Development Co., Ltd. (42%), EDP Asia-Investment and Consultancy Ltd. (21%), Polytec Industrial Ltd. (11%), Asiainvest (IP Holding) (10%), China Power International Holding Ltd (6%), Government of Macau (8%), other 800 local shareholders (2%).[2]

Organizational structures[edit]

  • Network Operations and Maintenance Department
  • Procurement and Logistics Department
  • Power and Network Dispatch Department
  • Customer Services Department
  • Finance Department
  • Human Resources Department
  • Information Systems Department
  • Special Projects Department
  • Generation Department
  • Network Planning, Design and Construction Department
  • Communication and Public Affairs Department
  • Regulatory Affairs Department
  • Safety, Health and Quality Department[3]


CEM has 2 power stations and 22 substations across Macau:[4]

  • Macau Power Station - 30.2 MW gas (1973) and 34.0 MW diesel (1983)
  • Coloane Power Station A - 40.0 MW Steam Turbine (1978) and 271.4 MW Diesel Turbine (1987-1996)
  • Coloane Power Station B - 136.4 MW Cycle Combined gas fired (2002-2003)
  • Lotus Substation -Taipa/Cotai
  • Canal dos Patos Substation
  • Macau Norte Substation
  • Hengqin Island Substation

Distribution of electricity generated at the power stations are delivered by an underground network.[5]

See also[edit]