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How We Care for our Environment

HK Electric is committed to protecting the environment of Hong Kong. We take great care in site selection and project planning while constructing our power station and have paid utmost attention in minimising its environmental impact. Whilst sparing no efforts to reduce the emissions, wastes and discharges from our operations, we are also looking for ways of recycling. For example, a significant percentage of our power station's solid wastes is recycled and used as raw materials in the construction industry. We have acquired a number of electric and hybrid vehicles to help improve roadside air quality. We are also a keen supporter of a wider application of renewable energy in Hong Kong, funding several pilot projects and feasibility studies on sustainable development.

Gas-fired Power Generation

Gas-fired electricity generation accounts for over 30% of our total power production. It is environmentally friendly, as it emits minimal quantities of sulphur dioxide and particulates, while nitrogen oxide and carbon dioxide emissions are greatly reduced.

Solar Power

HK Electric has built one of the Hong Kong's largest commercial-scale solar power systems, which is also the first large scale project applying the amorphous silicon thin film photovoltaic panels in the territory. Since its inception in July 2010, more than 7.2 million kWh green electricity (as at end December 2017) has been produced, offsetting 6,000 tonnes of carbon dioxide emissions.

Wind Power

Hong Kong's first commercial-scale wind power station, Lamma Winds - a pioneer in the use of renewable energy in the territory - was commissioned on 23 February 2006. By the end of December 2017, Lamma Winds has generated more than 10.1 million kWh of green electricity, reducing over 3,400 tonnes of coal consumption and more than 8,400 tonnes of carbon dioxide emissions.

Flue Gas Desulphurisation Plant

Flue Gas Desulphurisation Plant is installed to remove over 90% of sulphur dioxide in the flue gas. A total of six Lamma coal-fired units responsible for 80% coal-fired generating capacity are now equipped with FGD systems.

Low NOx Burners

With the use of low NOx burners, concentration of NOx in the flue gas is reduced by two-third comparing with that produced by a conventional unit. A total of five Lamma coal-fired units responsible for 70% coal-fired generating capacity are now equipped with LNB systems.

Electrostatic Precipitators and Chimneys

Electrostatic Precipitators remove over 99% of particulates in the flue gas. The tall chimneys effectively disperse the pollutants to very low concentrations when they reach ground level.

Air Quality Monitoring Station

HK Electric has installed a total of six air quality monitoring stations in the south of Hong Kong Island and in Cheung Chau to monitor the impact of Lamma Power Station on the ambient air quality. Results obtained are considered well within the Hong Kong Air Quality Objectives. Please browse the following for the monitoring data:

Noise Monitoring Station

HK Electric has installed a total of six monitoring stations at strategic locations both inside and around the Lamma Power Station to continuously monitor the noise impact on the nearby villages.

Rain and Effluent

Rainwater and run-off water from the coal pile is collected and used in the computerised water spraying system for the coal yard, significantly reducing both the consumption of fresh water and the quantity of effluent. The rainwater and waste water collected for reuse in 2017 was about 112,000 cubic meters.

Seawater Monitoring

Scuba divers and laboratory technicians take biological, seabed sediment and water samples from the coastline around the power station on a regular basis, and laboratory tests and analysis of these samples confirm that marine life has not been affected by the power station's operations.

Submerged Scraper Conveyors

Submerged scraper conveyors handle furnace bottom ash from all coal-fired units, drastically reducing the quantity of wastewater discharged from the power station.

Foam Suppression Water-Spraying System

The large quantity of cooling water discharge can generate foam which is environmentally harmless but may be unsightly, so a foam suppression system comprising a retaining wall and water spray has been built to enclose and disintegrate the foam at the cooling water outfall.

Effective By-product Management

Ash is the major solid by-product of burning coal. Coal ash can be used for landfill purposes or for making cement and brick, and is marketed to contractors as a construction material for the building industry. An ash lagoon is in place to provide a temporary storage space for ash. Gypsum is a solid by-product from the FGD systems and we promote its beneficial use in industry.

Environmental Performance Data

Click here for the quarterly emissions data for Lamma Power Station.

Lamma Unit L9 is the first gas-fired combined cycle unit in Hong Kong fuelled by liquefied natural gas

Lamma Unit L9 is the first gas-fired combined cycle unit in Hong Kong fuelled by liquefied natural gas

Flue Gas Desulphurization Plant is installed to remove over 90% of sulphur dioxide in the flue gas

Flue Gas Desulphurization Plant is installed to remove over 90% of sulphur dioxide in the flue gas

Electrostatic Precipitators remove over 99% of particulates in the flue gas

Electrostatic Precipitators remove over 99% of particulates in the flue gas

Six air quality monitoring stations are installed to monitor the impact of Lamma Power Station on the ambient air quality

Six air quality monitoring stations are installed to monitor the impact of Lamma Power Station on the ambient air quality

Rainwater collected for water spraying in coal yard

Rainwater collected for water spraying in coal yard

Laboratory technician working on collected samples

Laboratory technician working on collected samples

Extensive landscaping and greening at Lamma Power Station

Extensive landscaping and greening at Lamma Power Station

HK Electric has acquired a number of electric and hybrid vehicles

HK Electric has acquired a number of electric and hybrid vehicles

Rainwater and recycled wastewater collection at Lamma Power Station

Rainwater and recycled wastewater collection at Lamma Power Station

Hong Kong's first commercial-scale wind power station, Lamma Winds

Hong Kong's first commercial-scale wind power station, Lamma Winds

Our solar power system is the largest of its kind in Hong Kong

HK Electric's solar power system has a generating capacity of one MW

An ash lagoonddd is in place to provide a temporary storage space for ash

An ash lagoon is in place to provide a temporary storage space for ash