Final CO2 allowance auction dates, the auction calendar, and CO2 allowance quantities are published in the Auction Notice for each auction, available on the Auction Materials page.
| Auction |
Auction Date |
Reserve Price | Projected Quantity | Allocation Year1 | Cost Containment Reserve | Emissions Containment Reserve |
| 51 | March 3, 2021 | $2.38 | 23,467,261 |
2018, 2019, 2020, 2021 |
11,976,778 | 11,307,333 |
| 52 | June 2, 2021 | $2.38 | 22,987,719 | 2019, 2020, 2021 | 11,976,778 | 11,307,333 |
| 53 | September 8, 2021 | $2.38 | TBD | TBD | Unused Remainder | Unused Remainder |
| 54 | December 1, 2021 | $2.38 | TBD | TBD | Unused Remainder | Unused Remainder |
1 States participating in 2021 auctions may auction allowances from previous allocation year set asides as specified in regulations for each state.