National Emissions Inventory

The Environmental Management Bureau (EMB) is required under RA 8749 to conduct an inventory of emissions once every three years. Emissions inventory estimates emissions coming from stationary, mobile and area sources.

Based on the latest National Emissions Inventory by source conducted in 2018, the majority (74%) of air pollutants came from mobile sources such as cars, motorcycles, trucks and buses.  Sixteen  percent (15%) were contributed by stationary sources such as power plants and factories. The rest (11%) were from area sources such as construction activities, open burning of solid wastes, kainginin the upland, among others.

Emissions Inventory Per Region
Regions Stationary Mobile Area
Region 1 11% 79% 9%
Region 2 0.03% 95.29% 4.68%
Region 3 20% 75% 5%
Region 4A 7% 87% 6%
Region 4B9.48%90.42%0.10%
Region 53%76%21%
Region 612%61%27%
Region 729%67%4%
Region 81%90%9%
Region 90.23%99.22%0.56%
Region 1045.0%35.5%19.5%
Region 114%35%61%
Region 122%62%36%
Region 134%91%5%
NCR18.42%81.15%0.43%
CAR0.05%54.77%45.2%