4 banked SOx certificates of record, recorded prices, and a direct line to the holders.
Home / District guides / Antelope Valley AQMD / SOx
Every registry entry in Antelope Valley AQMD that includes SOx, from ERC Registry, updated 5/20/2025. These are banked credits — the register shows what exists, not what the holder has agreed to sell. Open the interactive registry to send an inquiry on any of them.
| Holder of record | Certificate(s) | Source / pollutants banked |
|---|---|---|
| Lockheed Martin | 4 certificates (AV0004 … AV0030) | NOx 7,304 lb/yr · VOC 148 lb/day · VOC 45,268 lb/yr · SOx 7 lb/yr · CO 962 lb/yr |
No SOx transactions were reported to CARB for Antelope Valley AQMD in 2022. See the statewide price tables and SOx prices in other districts for a reference range; local scarcity sets the price.
SOx demand is thinner than NOx or ROG, and SOx volumes often trade as add-ons to a larger deal — but recorded 2022 sales ran as high as $20,000/ton in the Bay Area.
ERCs are district-bound: a SOx credit banked in Antelope Valley AQMD is usable in Antelope Valley AQMD (or its air basin with district board approval). Tell us the tonnage your permit requires and we contact the holders above, confirm what is available, and can represent you as buyer's broker — no fee to inquire.
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