以目前政府的統計資料,每增加一度電消耗就會多排放0.638g的CO2。
以LED MR16及傳統MR16 的CO2排放量做比較:
單顆LED MR16 (10W)每月耗電量約3度, 因此一年的CO2排放量約23g;傳統MR16 (50W) 每月耗電量約15度,因此一年的CO2排放量約115g。因此,每顆LED-MR16每年可幫地球減碳約92g。
以E26/27 LED燈泡及鎢絲燈泡的CO2排放量做比較:E26/27(13W) LED 每月耗電量約3.9度,因此一年的CO2排放量約30g,60W鎢絲燈泡每月耗電量約18度, 因此一年的CO2排放量約138g。因此,每顆E26/27(13W )LED每年可幫地球減碳約108g。
According to the official data shows that 0.638g carbon dioxide (CO2) will be produced by increasing 1 kW/hrs power- consumption. Comparing the amounts of CO2 produced from LED MR16 with the traditional MR16, the result is as follows:
LED MR16 (10W) consumes 3 kW/hts per month. Therefore, the annual amount of CO2 produced will be 23g.
Traditional MR16(50W) consumes 15kW/hts per month. Therefore, the annual amount of CO2 produced will be115g.
Based on the above statements, we can conclude that if we use LED MR16 to replace the traditional one, we will reduce CO2- produced around 92g annually.
Comparing the amount of CO2 produced from LED E26/27 with the traditional light bulb:
LED E26/27 (13W) consumes 3.9 kW/hrs per month. Therefore, the annual amount of CO2 produced will be 30g.
Traditional light bulb(60W) consumes 18 kW/hrs per month. Therefore, the annual amount of CO2 produced will be 138g.
To conclude, to use the LED E26/27 will reduce CO2-produced around 108g annually.


To read more details: Halogen vs LED Spotlights Comparison (in English).