The district's public ERC registry — 300+ banked certificates — mirrored and searchable on the Exchange. On the Exchange
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From the district's public registry (Active ERC & STERC list, published monthly (June 2026 edition, Excel)). 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 |
|---|---|---|
| Hundreds of active ERC & STERC certificates — the state's priciest market | Full list published monthly by the district (Excel); June 2026 edition current | Tell us what you need and we search the current month's list |
24 transactions reported to CARB for 2022 under Health & Safety Code §40709.5:
| Pollutant | Median $/ton | Low | High |
|---|---|---|---|
| NOx | $356,332.7 | $356,332.7 | $356,332.7 |
| PM10 | $318.78 | $318.78 | $427,777.78 |
| HC (ROG/VOC) | $21,875 | $314.02 | $27,397.26 |
| SOx | $1,190.55 | $1,189.92 | $1,191.18 |
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 South Coast 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: (909) 396-2000. District ERC program page.
Search South Coast AQMD credits on the Exchange Hold credits here? List free
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