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Annual Auction
Allowance Trading
Once a year, EPA auctions a certain number of SO2 allowances at the end of March. Utilities, environmental groups, allowance brokers, and anyone else interested in purchasing allowances can participate. Allowances sold at the auctions will be sold to the highest bidder until no allowances remain. Successful bidders are notified and are listed on our Web site.
To bid in the EPA Auctions please see the How to Bid Factsheet in the Auction section of Clean Air Markets forms page.
For more information on EPA’s SO2 allowance auction, see the Allowance Auction Fact Sheet.
EPA tracks the results of each annual auction:
- 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
A compressed (ZIP) Excel spreadsheet (MS Excel, 4.5 MB) provides auction proceeds at the unit and plant level for each year (1993 thru 2012).