Greenhouse Gas Inventory

The Greenhouse Gas Emissions Reduction Act requires the Department of the Environment to prepare and publish an updated inventory of statewide greenhouse gas emissions for a three-year cycle. Below are links to the 2006 base year inventory, and 2011, 2014, and 2017 triennial inventories.

The following files contain the greenhouse gas inventory:

The report below documents MDE’s work on the life cycle greenhouse gas emissions of natural gas extracted out of state through fracking but burned in state. MDE published an earlier version of this report in 2018. This update includes more analysis specific to 2017, and estimates using both the 100-year and 20-year GWP for methane.