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Tak Airport North Apron Decontamination > 1,800
Mega Watt Extension... > West
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Development at Telegraph Bay > Felling
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East Rail Extension > East
Mega Watt Extension at Lamma Island Gas-fired Power Station
Aerial view of future power station
Comparison between coal fired and gas fired options
Lamma Island Power Station
Electric Company Limited (HEC) is committed to providing a
reliable and cost-effective electricity supply to meet current
and future power requirements of Lamma and Hong Kong Islands.
A new 1,800MW power station with six 300MW units will need
to be fully developed by 2012, with the first unit to begin
operation by 2004.
A Site Search
Study concluded that an extension to Lamma Power Station was the
preferred site on condition that units were to be fired by the more
environmental-friendly fuel of natural gas rather than coal. Natural
gas was chosen as it could reduce the potential adverse air quality
impacts by shifting of the base-load operation of existing coal-fired
plants to new gas-fired units in phases while the total electricity
generation in the year 2012 would be increased to 2.57 times that
Based on the
outcomes of this Site Search Study, an EIA study was conducted to
determine the environmental acceptability of the proposed new extension
at Lamma Island Power Station.
Mitigation Measures and Outcomes
shifting the base load from the existing coal-fired units to new
gas-fired units, a total of 6.5 million tonnes of CO2
emissions will be avoided in 2012. This means that the estimated
greenhouse gas emissions per unit of electricity produced will
be reduced by 37% below the 1990 level in 2012 despite the increase
in power generating capacity.
Reductions in 61% of SO2 and 40% of NOx emissions will
benefit local air quality in 2012 when compared to 2002. From
a regional perspective, the contribution to acid deposition in
the Pearl River Delta by this new power station would be 3% and
1% for the years 2002 and 2012 respectively, a reduction of 2%.
Deployment of no less than 400m3 of artificial reefs
could enhance coral habitation. Provision of greater than 31,000m2
of rubble mound seawalls on the western and southern edges of
the reclamation will be employed to facilitate re-colonization
of soft corals and gorgonians that might be damaged or disturbed
as a result of reclamation activity at Lamma Island.
The use of silt curtains and reduced dredging rates at certain
stages of the tidal cycle prevented unacceptable impacts to the
water quality while protecting marine ecology resources.
Construction of seawalls to above sea level before backfilling
of the site platform commenced prevented the loss of excessive
fine to the water column during sand filling.
To avoid adverse impact to the Finless porpoise, jet laying for
the gas pipeline would be prohibited in southeastern Lamma Island
from April to June. The routing of all construction related vessels
would avoid disturbance of the finless porpoise in southern waters.