County Greenhouse Gas Inventory


In 2018, the County worked with the Metropolitan Washington Council of Governments (MWCOG) to complete a GHG inventory for the years 2005, 2012, and 2015. Additional inventories are planned for 2018 and 2020.


Between 2005 and 2015, Montgomery County’s community-wide GHG emissions decreased by nearly 14 percent, even as the population grew by 11 percent. In 2015, residential and commercial energy consumption accounted for 51 percent of emissions and transportation-related emissions accounted for 41 percent.

However, emissions between 2012 and 2015 increased by nearly three percent, largely resulting from increased residential and commercial energy use during this period. The factors causing this increase, and what policies could mitigate them, require additional investigation.

Below are detailed tables and graphs, produced by the Metropolitan Washington Council of Governments (MWCOG) on behalf of Montgomery County: