Subpart W – Petroleum and Natural Gas Systems
Recent Activity
August 26, 2024: EPA announces a Request for Information on use of advanced technologies for quantification of methane in the GHGRP. Note that the deadline for comments has been extended by 30 days to November 27th, 2024.
This page provides resources for subpart W reporters, including implementation information as well as links to supporting documents for relevant rulemakings and data products associated with subpart W.
Summary
Owners or operators of facilities that contain petroleum and natural gas systems and emit 25,000 metric tons or more of GHGs per year (expressed as carbon dioxide equivalents) report GHG data to EPA. Owners or operators collect GHG data; calculate GHG emissions; and follow the specified procedures for quality assurance, missing data, recordkeeping, and reporting. Subpart W consists of emission sources in ten segments of the petroleum and natural gas industry.
Additional Resources
- View the GHGRP Oil and Gas Dashboard.
- View additional information about emissions from the oil and natural gas industry and GHGRP.
- View StoryMaps about the onshore wells and GHGRP.
Reporter Resources
- Offshore Information Sheet: Platforms that are subject to subpart W must submit the report for emissions from offshore petroleum and natural gas production by March 31 of each year, unless the 31st is a weekend or federal holiday, in which case the reports are due on the next business day.
- Training Presentations
Reported Data
- Data Highlights: summary of emissions data from the most recent Reporting Year.
- Onshore Production: summary of emissions data from the most recent Reporting Year in the onshore production and gathering and boosting segments.
- Other Industry Segments: summary of emissions data from the most recent Reporting Year for all other industry segments.
- Emission Sources: crosswalk of emissions by source and industry segment from the most recent Reporting Year.
- Sector Profile: more detailed information about emissions from the most recent Reporting Year.
- Data Publication FAQs
Regulatory History
Rulemaking Resources: Links to Subpart W rules and associated documents.