Held by Calpine Corporation
NOx 4.6 t/yr
Home / District guides / Bay Area AQMD / Calpine Corporation / 1222
| Certificate | 1222 |
|---|---|
| Holder of record | Calpine Corporation |
| Air district | Bay Area AQMD |
| Issued | 2010-11-01 |
| Reduction site | NRG Potrero, LLC, San Francisco, CA |
| Status | Banked — not listed |
| District note | These emission reduction credits shall be used solely asemission offsets for new or modified facilities thatgenerate electricity. Such new or modified facilities shallinclude electrical generating facilities owned and operatedby an electric utility, electrical cogeneration faclitiesand resource waste recovery electrical generation facilities |
| Pollutant | As the district records it |
|---|---|
| NOx | 4.6 t/yr |
| Date | Recorded |
|---|---|
| 2010-11-01 | Issued by the district |
| 2026-10-03 | On the register: ERC Bank Status database (baaqmd.gov), retrieved 2026-10-03 |
Changes between register editions — transfers, partial use, retirement — are added here as each new edition is ingested. All register changes.
| Pollutant | Year | Median $/t | Range | Trades* |
|---|---|---|---|---|
| NOx | 2023 CARB | $29,000 | $23,236– | 7 |
| NOx | 2022 CARB | $22,000 | $7,974– | 21 |
*For the CARB reports, every recorded transfer in the district that year, all pollutants. Recent years shown; every recorded year. Sources: CARB 2023 §40709.5 statewide report · CARB 2022 §40709.5 statewide report.
Arithmetic only — this certificate's volume multiplied by the Bay Area median recorded for each pollutant in 2022–2023, shown as a range because the medians moved between years. Not an appraisal, an offer or a prediction.
| Pollutant | Tons / year | × recorded median | Reference |
|---|---|---|---|
| NOx | 4.6 | $22,000– | $101,000– |
It is already public record in the Bay Area register. Listing it on the Exchange is free and commits you to nothing; we verify it against the register before anything goes live, and inquiries route to you or your broker.
List 1222 for saleAsk the Exchange about it
Buyer and holder agree a price privately. The transfer package — the holder's authorization, the purchase agreement and the district's transfer forms — goes to Bay Area AQMD, which verifies the banked reductions, records the transfer and re-issues the certificate, or its remaining balance, in the buyer's name. Credits are generally usable only inside Bay Area AQMD, or its air basin with district board approval (Health & Safety Code §40709.6). District office: (415) 749-5000.
ERC Bank Status database (baaqmd.gov), retrieved 2026-10-03 — Bay Area AQMD ERC register. Retrieved 2026-10-03. 425 banked certificates across 161 holders, in tons per year; 35 flagged by their owners as available for sale. PM2.5 is a subset of PM10 and is not added to it. Certificate sums match the district's published totals. Holder names and certificate numbers are public district records; holder contact details are never published here. See something wrong? Tell us and we check it against the district's file.