Emissions growth processing creates emissions for year(s) in the future using an available dataset. The SMOKE program Cntlmat will create a growth matrix that contains the growth factors for each source and pollutant in the inventory. Next, the SMOKE program Grwinven combines this growth matrix with the inventory to create a grown emissions inventory.

Cntlmat can also be used to apply controls to the emissions inventory. These controls can be designed to change the emissions values based on regulations. Grwinven is also used to combine this control matrix with the inventory to create a controlled emissions inventory.