The district's public ERC registry — 145+ banked certificates — mirrored and searchable on the Exchange. On the Exchange
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From the district's public registry (District bank-status database export, Aug 28, 2026 (426 certificates; volumes in tons; 35 owner-flagged 'available for sale'). Top holders by pollutant shown.). 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.
| Holder of record | Certificate(s) | Source / pollutants banked |
|---|---|---|
| Tesoro Refining & Marketing Co., LLC | 8 certificates | Refining — Martinez · SO2 2,892.4 · NOx 130.7 · CO 33.2 · PM10 11.8 (t) |
| Valero Refining Company — California | 13 certificates | Refining — Benicia · SO2 2,467.3 · NOx 19.4 · PM10 1.7 (t) |
| Lehigh Southwest Cement Company | 5 certificates | Cement — Cupertino · CO 1,106.2 · NOx 195.4 · SO2 187.4 · PM10 79.6 (t) |
| Calpine Corporation | 24 certificates | Power generation · NOx 480.3 · SO2 460.1 · CO 140.7 (t) |
| Pacific Gas & Electric Company | 20 certificates | Utility / power plants · NOx 324.7 · SO2 221.1 · CO 100.6 · PM10 73.2 (t) |
| Chevron Products Company | 14 certificates | Refining — Richmond · CO 509.1 · SO2 100.2 · NOx 70.1 · PM10 31.2 (t) |
| GenOn Emissions, LLC | 4 certificates | Power generation · CO 465.5 · PM10 182.3 · NOx 6.2 (t) |
| Marsh Landing LLC | 1 certificate | Power — Antioch · NOx 210.4 · SO2 125.2 · CO 114.0 · PM10 25.3 (t) |
| Harbert ERC, LLC | 11 certificates | ERC holder · SO2 169.8 · CO 52.3 · NOx 10.7 · PM10 10.3 (t) |
| PSEG Global USA, LLC | 10 certificates | Power generation · SO2 169.8 · CO 52.3 · NOx 10.7 · PM10 7.6 (t) |
| Anew Environmental, LLC | 7 certificates (4 flagged available) | ERC aggregator / broker · SO2 197.9 · CO 3.8 · PM10 2.3 (t) |
| Martinez Refining Company LLC | 9 certificates | Refining — Martinez · NOx 103.4 · SO2 64.8 · PM10 8.6 (t) |
| Homestake Mining Company | 1 certificate | Mining — Napa · PM 87.5 · CO 87.0 (t) |
| U.S. Air Force | 17 certificates | Federal / military · NOx 54.8 · CO 45.1 · SO2 14.7 · PM10 8.8 (t) |
| + ~150 more certificate holders | 426 certificates total | Full district bank — NOx ~2,090t · SO2 ~7,157t · CO ~3,133t · PM10 ~540t. 35 are owner-flagged 'available for sale'; ask us for any holder or pollutant |
21 transactions reported to CARB for 2022 under Health & Safety Code §40709.5:
| Pollutant | Median $/ton | Low | High |
|---|---|---|---|
| NOx | $22,000 | $7,974 | $31,000 |
| PM10 | $20,000 | $20,000 | $20,000 |
| HC (ROG/VOC) | $9,125 | $8,500 | $10,000 |
| SOx | $10,025.5 | $51 | $20,000 |
Source: CARB Emission Reduction Offset Transaction Cost Summary Report for 2022. Full statewide table on the Market Data page.
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.
Search Bay Area AQMD credits on the Exchange Hold credits here? List free
NOx credits in Bay Area AQMD · PM10 credits in Bay Area AQMD · CO credits in Bay Area AQMD
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