Bay Area AQMD Emission Reduction Credits

Currently sourcing in this district

Posted by the Exchange on the wanted board. Responses go to the Exchange desk, privately.

Certificates their owners have flagged as available for sale in the district bank

The district's bank-status database lets an owner mark a certificate "available for sale". The 35 certificates below, across 9 holders, carried that flag in the edition retrieved 2026-10-21. The flag is the owner's, as the district publishes it: it is not a listing on the Exchange, not a current offer, and it carries no price. Owner contacts are on the district's database; the desk will check availability and ask for a quote on request.

PM2.5 is a subset of PM10 and is not added to it. Source: ERC Bank Status database (baaqmd.gov), retrieved 2026-10-21. A quote on file means a holder has given the desk a written asking price for that certificate; the desk passes it on to a buyer with a stated need, it is not published here.

Banked ERC certificates of record, 423 across 159 holders

From the district's public registry (ERC Bank Status database (baaqmd.gov), retrieved 2026-10-21 (volumes in tons; 35 owner-flagged 'available for sale')). Register edition retrieved 2026-10-21, last checked 2026-10-21; every certificate is mirrored, with its own page. These are banked credits, the registry shows what exists, not what the holder has committed to sell. Open the interactive registry to search, view pollutant breakdowns, and send an inquiry.

Recorded ERC transaction prices in Bay Area AQMD

2023: 7 transactions reported to CARB under Health & Safety Code §40709.5.

Source: CARB ERC transaction report for 2023.

2022: 21 transactions reported to CARB under Health & Safety Code §40709.5.

Source: CARB ERC transaction report for 2022.

Statewide tables, 2022–2025, on the ERC prices page.

Every recorded sale in Bay Area AQMD, year by year

From Table V-1 of CARB's statewide §40709.5 reports, which list each sale the districts reported (1994 to 2023; the 2006 and 2007 reports are scans that could not be read). The district publishes no sale-by-sale record of its own. Median price per ton as recorded, the number of sales (n) and the low–high range. 552 transactions in all; 10 recorded without a price (7 of them recorded at $0.00: transfers without a cash price, such as splits, reissues, barters and transfers between related parties, kept as transfers, not priced sales). Prices are shown as printed, including a few nominal ones ($1–$100 per ton) that sit at the low end of some ranges. Download every transaction (CSV).

Transferring ERCs in Bay Area AQMD

The district's own procedure, step by step, from its rules and forms (checked 2026-10-04). Every deal room on the Exchange follows these steps.

1. Seller (owner of record) completes Form P-402: certificate number, tons/year and $/ton per pollutant, application contact, and transfer contact (buyer, with Air District Facility ID if any) (source)
2. Seller writes "Surrendered to Bay Area Air District by" on the original certificate and signs and dates it (Rule 2-4-412.3) (source)
3. Seller signs the P-402 certification and submits it with the surrendered certificate by e-mail to permits@baaqmd.gov or by mail to 375 Beale Street, Suite 600, San Francisco, CA 94105 (source)
4. Pay the $684 transfer filing fee when the District invoices it (online or by check) (source)
5. District retains the old certificate and issues a new certificate to the buyer and a new certificate to the seller for any untransferred balance (source)

Restrictions the district states: Rule 2-4-412.5: the creator of the deposit keeps enforceable permit conditions and liability; "the user of any transferred bank deposit shall not be held liable for any failure of the creator to comply with District requirements." (source) · Rule 2-4-412.1: deposits are withdrawn "in accordance with the offset ratios in effect at the time of withdrawal" (Reg 2-2-302/303). No discount at the time of transfer is stated. (source) · Rule 2-4-304: ERCs may not be used to exempt a source from BACT, NSPS (Reg 10) or any other control requirement. (source) · Rule 2-4-411: the District keeps a banking register of all deposits, withdrawals and transactions; a summary is "available to the public upon request." Rule 2-4-413: annual report to the Board on all banking transactions. (source) · Rule 2-4-414: Small Facility Banking Account allocations "cannot be transferred or banked by the recipient." (source) · Reg 2-2-221.2 (amended Dec. 6, 2017): offsets may include banked ERCs "from adjacent Districts" if CAA 173(c)(1) and H&SC 40709.6 requirements are met or do not apply. (source)

Bay Area AQMD: contacts, banking rule and fees

From the district’s own pages, rules and forms, each fact linked to where it is published. Last verified 2026-10-06. Rules and fees change; confirm with the district before you file.

How ERCs work in Bay Area AQMD

Emission Reduction Credits are banked, district-certified reductions in NOx, ROG/VOC, PM10, SOx, or CO. Businesses building or expanding in the district may be required under New Source Review to purchase ERCs to offset new emissions before an air permit issues. Credits are generally usable only within Bay Area AQMD (or its air basin with district board approval, Health & Safety Code §40709.6), which is why local scarcity sets the price. The district verifies reductions and records every transfer.

District office: (415) 749-5000. District ERC program page.

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Bay Area AQMD credits by pollutant

NOx credits in Bay Area AQMD · ROG / VOC credits in Bay Area AQMD · PM10 credits in Bay Area AQMD · SOx credits in Bay Area AQMD · CO credits in Bay Area AQMD

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