87
            
            
              Sustainability Report 2011
            
            
              
                Environmental
              
            
            
              
                Resource Use / Conservation (Hong Kong)
              
            
            
              Naphtha saved
            
            
              #
            
            
              Metric
            
            
              tonnes
            
            
              13,996
            
            
              13,657
            
            
              11,234
            
            
              9,960
            
            
              3,430
            
            
              Town gas saved
            
            
              #
            
            
              Cubic metres 3,528,364 4,089,133 3,626,266 3,849,776 3,818,419
            
            
              Water saved
            
            
              #
            
            
              Cubic metres
            
            
              177,463 224,358 213,971 220,363 214,075
            
            
              Photovoltaic (PV)
            
            
              panels installed
            
            
              Square
            
            
              metres
            
            
              75
            
            
              75
            
            
              75
            
            
              75
            
            
              75
            
            
              Grid electricity
            
            
              saved through PV
            
            
              panels
            
            
              kWh
            
            
              86,600
            
            
              86,600
            
            
              86,900
            
            
              86,600
            
            
              86,200
            
            
              Electricity saved
            
            
              (North Point
            
            
              headquarters
            
            
              and Ma Tau Kok
            
            
              office)
            
            
              #
            
            
              kWh
            
            
              4,232,725 4,142,825 3,993,105 3,763,818 3,737,070
            
            
              CO
            
            
              2
            
            
              emissions
            
            
              avoided equivalent
            
            
              to electricity saved
            
            
              (North Point
            
            
              headquarters
            
            
              and Ma Tau Kok
            
            
              office)*
            
            
              Metric
            
            
              tonnes
            
            
              2,963
            
            
              2,900
            
            
              2,795
            
            
              2,635
            
            
              2,616
            
            
              Landfill gas
            
            
              utilisation as
            
            
              heating fuel in gas
            
            
              production
            
            
              Cubic metres
            
            
              from Shuen
            
            
              Wan
            
            
              2,364,000 2,761,000 2,361,000 2,528,000 2,716,366
            
            
              from NENT
            
            
              SNG
            
            
              20,789,390 19,925,269 16,065,375 14,381,262 5,390,254
            
            
              (since May
            
            
              2007)
            
            
              
                Air Emissions (Hong Kong)
              
            
            
              CO
            
            
              2
            
            
              Daily average
            
            
              in metric
            
            
              tonnes
            
            
              913
            
            
              896
            
            
              896
            
            
              929
            
            
              909
            
            
              (Metric
            
            
              tonnes per
            
            
              million MJ of
            
            
              town gas)
            
            
              (11.91)
            
            
              (11.96)
            
            
              (12.13)
            
            
              (12.35)
            
            
              (12.33)
            
            
              Key Statistics
            
            
              
                Unit
              
            
            
              
                2011
              
            
            
              
                2010
              
            
            
              
                2009
              
            
            
              
                2008
              
            
            
              
                2007