SO2 Allowance Auctions
Annual Auctions
- 2025 EPA Allowance Auction Results
- 2024 EPA Allowance Auction Results
- 2023 EPA Allowance Auction Results
- 2022 EPA Allowance Auction Results
- 2021 EPA Allowance Auction Results
- 2020 EPA Allowance Auction Results
- 2019 EPA Allowance Auction Results
- 2018 EPA Allowance Auction Results
- 2017 EPA Allowance Auction Results
- 2016 EPA Allowance Auction Results
- 2015 EPA Allowance Auction Results
- 2014 EPA Allowance Auction Results
- 2013 EPA Allowance Auction Results
- 2012 EPA Allowance Auction Results
- 2011 EPA Allowance Auction Results
- 2010 EPA Allowance Auction Results
- 2009 EPA Allowance Auction Results
- 2008 EPA Allowance Auction Results
- 2007 EPA Allowance Auction Results
- 2006 EPA Allowance Auction Results
- 2005 EPA Allowance Auction Results
- 2004 EPA Allowance Auction Results
- 2003 EPA Allowance Auction Results
- 2002 EPA Allowance Auction Results
- 2001 EPA Allowance Auction Results
- 2000 EPA Allowance Auction Results
- 1999 EPA Allowance Auction Results
- 1998 EPA Allowance Auction Results
- 1997 EPA Allowance Auction Results
- 1996 EPA Allowance Auction Results
- 1995 EPA Allowance Auction Results
- 1994 EPA Allowance Auction Results
- 1993 EPA Allowance Auction Results
The Historical SO2 Allowance Auction Proceeds Spreadsheet (xlsx) provides auction proceeds at the unit and plant level for each year. Download an Excel viewer.
Frequently Asked Questions About EPA's Acid Rain Program SO2 Allowance Auction