* 2021年澳門二氧化碳排放系數 = 0.62 公斤二氧化碳排放當量／千瓦時
^ 預設每棵樹一年減除的二氧化碳量為 23 千克 -《香港建築物（商業、住宅或公共用途）的溫室氣體排放及減除的核算和報告指引 (2010年版)》
CEM “Macau Energy Saving Activity” saves over 380 million kWh of electricity in 14 straight years
Last year, CEM joined hands with the Environmental Protection Bureau to hold the “Macau Energy Saving Activity” again. The Award Ceremony was held today to present 49e Awards to the participating residents, buildings and hotels in recognition of their contributions to energy conservation and emission reduction in Macau.
A total of 46 hotels and 517 buildings have taken part in the contest and 3,580 people have registered for the “5% Energy Saving Action” Lucky Draw. During the contest period from July to October last year, all participating units jointly saved a total of more than 64 million kWh of electricity. Over the past 14 years, a total of more than 382 million kWh of electricity was saved during the Activity and more than 237 million kilograms of carbon emissions* were reduced, equivalent to the planting of 10.3 million trees^.
* Macau CO2-e emission factor of 2021 = 0.62 kg/kWh
^ CO2 removed by trees in one year estimated at 23kg / tree - Guidelines to Account for and Report on Greenhouse Gas Emissions and Removals for Buildings (Commercial, Residential or Institutional Purposes) in Hong Kong (2010 Edition)