CO Emission Reduction Credits in California
Research recorded prices and district certificate records. Ask the Exchange to confirm current availability and obtain seller quotes.
Why CO credits matter
CO credits appear in district registers and historical transaction reports. Whether a project needs CO offsets, and which credits qualify, depends on the applicable district rules. Sparse reported sales do not establish a current asking price.
What CO ERCs sold for, recorded 2023 prices (CARB)
| District | Median $/ton | Low | High |
|---|---|---|---|
| Yolo-Solano AQMD | $3,400 | $3,400 | $3,400 |
Source: CARB 2023 ERC transaction report; 2022 and South Coast 2024 tables on the prices page. Yolo-Solano's own transaction history (1998–2024) shows CO clearing $1–$10,000/ton across 15 recorded transactions.
Districts with banked CO credits on the Exchange
Published register entries reporting CO volumes, by district. These records do not confirm current seller availability:
Search banked CO ERC records Request CO credits privately
Request a current CO quote
Provide the project district, required quantity, units, quarterly requirements if applicable, and permit deadline. We compare the credit price, minimum purchase, seller fees, district transfer charges and agreed brokerage compensation. A smaller quantity can cost more per ton when fixed charges apply. Historical prices are context, not a current offer.
Buy or sell CO ERCs
Eligibility for CO credits depends on the project and district rules. Some interdistrict uses are possible with required approvals under Health & Safety Code §40709.6. Tell us the district and tonnage your permit requires and we research district records and request quotes from holders or their representatives. Initial inquiries are free. Brokerage services and compensation are agreed in writing. Holders list free and set their own asking price.