Methane Reporting Under EPA's GHGRP: What Gets Captured
Methane is a potent greenhouse gas — roughly 80 times more powerful than CO₂ over a 20-year timeframe — and industrial operations are significant methane sources. EPA\'s Greenhouse Gas Reporting Program (GHGRP), established in 2009, requires large industrial facilities to annually report their greenhouse gas emissions, including methane. Understanding how GHGRP differs from TRI reporting is important for anyone working with industrial emissions data.
GHGRP vs. TRI: Different Purpose, Different Coverage
TRI focuses on toxic chemical releases; GHGRP focuses on greenhouse gas emissions. The two programs overlap somewhat — some facilities report to both — but they have different thresholds, different chemical lists, and different reporting formats. GHGRP data is available through EPA\'s Facility Level Information on GreenHouse gases Tool (FLIGHT). EmissionsLookup draws primarily on TRI and ECHO data; GHGRP data provides complementary context for facilities concerned about both toxics and climate-relevant emissions.
Oil and Gas: The Dominant Methane Source
GHGRP data consistently shows that oil and natural gas production and processing are the dominant industrial methane sources. Methane escapes throughout the oil and gas supply chain — at wellheads, from storage tanks, through pipeline leaks, and at processing facilities. The EPA has tightened methane regulations for the oil and gas sector repeatedly over the past decade, with updated rules under the Inflation Reduction Act expanding monitoring and leak detection requirements.
Landfills and Agriculture
After oil and gas, municipal solid waste landfills and agricultural operations (particularly livestock digestion) are major methane sources. Landfills are required to capture and combust methane above certain generation thresholds under Clean Air Act regulations. Agricultural methane — from enteric fermentation in cattle and from manure management — is largely unregulated at the federal level, which is a significant gap in U.S. methane policy. Find facilities in relevant industries at EmissionsLookup\'s industry browser.
Connecting Methane to Community Impact
Methane itself is not a direct toxic hazard at typical ambient concentrations, but methane leaks often co-occur with other volatile organic compounds (VOCs) that are toxic or ozone-forming. For communities near oil and gas facilities, the relevant health concern is often co-emitted compounds rather than methane itself. Browse VOC-releasing facilities at our chemical index and explore state-level emissions patterns at the state browser. For demographic data on communities near these operations, CensusDepth provides census tract population and income data.