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2018 SO2 Allowance Auction

The 2018 SO2 Allowance Auction took place on March 27, 2018. Allowances were auctioned that could first be used in 2018 as well as in 2025. Details are provided via the the links below.

Allowances Available for Auction

Origin of AllowancesSpot Auction
(First Usable in 2018)
7 Year Advance Auction
(First Usable in 2025 )
EPA125,000125,000
Privately Offered00
Total125,000125,000

Spot Auction Results

AllowancesNumber of BidsNumber of BiddersBid Price
Bid For: 128,000Successful: 2Successful: 2Highest: $.10
Sold: 125,000Unsuccessful: 1Unsuccessful: 0Clearing: $.06
(the clearing price is the lowest price at which a successful bid was made)
 Total: 3Total: 2Lowest: $.05
   Weighted Average of Winning Bids: $.06

7 Year Advance Auction Results

AllowancesNumber of BidsNumber of BiddersBid Price
Bid For: 130,000Successful: 2Successful: 2Highest: $.02
Sold: 125,000Unsuccessful: 0Unsuccessful: 0Clearing: $.02
(the clearing price is the lowest price at which a successful bid was made)
 Total: 2Total: 2Lowest: $.02
   Weighted Average of Winning Bids: $.02
Spot Auction Winners
Bidder's NameQuantityPercentage of
Total Allowances
Amount Paid
Bidder's NameQuantityPercentage of
Total Allowances
Amount Paid
#MSO2GA124,00099.200$7,440.00
Mt Carmel Cogen Inc1,00000.800$100.00
TOTALS125,000100%$7,540.00
 
7 Year Advance Auction Winners
#MSO2GA120,00096.000$2,400.00
Mt Carmel Cogen Inc5,00004.000$100.00
TOTALS125,000100%$2,500.00
 
 Total Auction Proceeds$10,040.00

Spot Bids (First Usable in 2018)

BIDSBIDDER'S NAMEQUANTITYTOTAL
$.10Mt Carmel Cogen Inc1,0001,000
$.06#MSO2GA*125,000126,000
Bids below this line were unsuccessful because they were below the clearing price of $.06;
$.05Mt Carmel Cogen Inc2,000128,000

*Awarded a partial fill of 124,000 out of 125,000 allowances bid for.

7 Year Advance Bids (First Usable in 2025)

BIDSBIDDER'S NAMEQUANTITYTOTAL
$.02Mt Carmel Cogen Inc5,0005,000
$.02#MSO2GA*125,000130,000

*Awarded a partial fill of 120,000 out of 125,000 allowances bid for.

The  2018 Auction Results Spreadsheet (xlsx) (27.57 KB)  provides the same results.  Download an Excel viewer.

« Return to the directory of annual auctions listed by year

Clean Air Power Sector Programs

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Contact Us About Clean Air Power Sector Programs
Contact Us About Clean Air Power Sector Programs to ask a question, provide feedback, or report a problem.
Last updated on May 20, 2026
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