Since collection of air pollution control fees for construction project particulates (total suspended particulates, TSPs) commenced in 1997, the EPA has kept more than half of Taiwan’s particulate matter pollutants under control. To further improve air quality, the EPA has planned to target stationary sources other than construction projects, which include TSP-emitting pipes in private and public emission stacks, stacking sites and transfer points. Fee rates range from NT$32 to NT$55, depending on emission levels. Extra fees are added if the TSPs contain harmful substances such as lead, cadmium, mercury, arsenic, hexavalent chromium, dioxins, and so on.

As nitrogen oxide (NOx) emissions generated by natural gas or liquefied petroleum gas (LPG) combustion in Taiwan have roughly doubled over the last decade, there is a need for more effective controls to be in place. Hence, enterprises with seasonal NOx emissions of more than 24 metric tons will be targeted for NOx fee collection, so as to encourage installation of control equipment and improvements in operations.