{"attribution":"California ERC Exchange (calercexchange.com), compiled from district registers and recorded transactions; cite the source of each figure.","generated":"2026-10-06","changes":[{"date":"2026-10-06","key":"MBARD","district":"Monterey Bay ARD","edition":"Active ERC Registry (Summary of Emission Banking Transactions) as of October 5, 2026; Community Bank ERCs as of October 5, 2026","prevEdition":"Active ERC Registry (Summary of Emission Banking Transactions) as of September 5, 2025; Community Bank ERCs as of September 5, 2025","kind":"update","summary":{"certificates":17,"holders":17,"added":1,"removed":0,"transfers":0,"volume":1,"renamed":1},"items":[{"type":"volume","c":"ERC-22-002","holder":"Monterey Bay ARD (community bank)","changes":[{"k":"NOx|t/yr","from":127.8275,"to":129.7575},{"k":"SOx|t/yr","from":85.1996,"to":85.3896},{"k":"VOC|t/yr","from":43.9217,"to":44.2617},{"k":"CO|t/yr","from":514.3595,"to":521.8295},{"k":"PM|t/yr","from":25.9778,"to":26.5478}],"text":"Volume changed: certificate ERC-22-002 (Monterey Bay ARD (community bank)), NOx t/yr 127.8275 to 129.7575; SOx t/yr 85.1996 to 85.3896; VOC t/yr 43.9217 to 44.2617; CO t/yr 514.3595 to 521.8295; PM t/yr 25.9778 to 26.5478"},{"type":"added","c":"ERC-26-001","holder":"Ameresco Santa Cruz Energy LLC","vols":[{"p":"NOx","v":17.43,"u":"t/yr"},{"p":"SOx","v":1.73,"u":"t/yr"},{"p":"VOC","v":2.99,"u":"t/yr"},{"p":"CO","v":67.24,"u":"t/yr"},{"p":"PM","v":4.97,"u":"t/yr"}],"text":"Added: certificate ERC-26-001, Ameresco Santa Cruz Energy LLC"},{"type":"renamed","c":"ERC-0000012","from":"Department of the Army - Presidio of Mon","to":"Department of the Army - Presidio of Monterey","text":"No longer on the register: certificate ERC-0000012, undefined"}]},{"date":"2026-10-03","key":"AVAQMD","district":"Antelope Valley AQMD","edition":"ERC Registry, updated 5/20/2025","kind":"baseline","summary":{"certificates":12,"holders":4},"items":[]},{"date":"2026-10-03","key":"BAAQMD","district":"Bay Area AQMD","edition":"ERC Bank Status database (baaqmd.gov), retrieved 2026-10-03","kind":"baseline","summary":{"certificates":425,"holders":161},"items":[]},{"date":"2026-10-03","key":"BCAQMD","district":"Butte County AQMD","edition":"District ERC Registry, August 2025","kind":"baseline","summary":{"certificates":30,"holders":11},"items":[]},{"date":"2026-10-03","key":"EKAPCD","district":"Eastern Kern APCD","edition":"Banking Certificate Registry, reviewed Aug 25, 2026","kind":"baseline","summary":{"certificates":52,"holders":14},"items":[]},{"date":"2026-10-03","key":"ICAPCD","district":"Imperial County APCD","edition":"Certificates Bank, Aug 25, 2026 (records-request response)","kind":"baseline","summary":{"certificates":328,"holders":37},"items":[]},{"date":"2026-10-03","key":"MBARD","district":"Monterey Bay ARD","edition":"Active ERC Registry (Summary of Emission Banking Transactions) as of September 5, 2025; Community Bank ERCs as of September 5, 2025","kind":"baseline","summary":{"certificates":16,"holders":16},"items":[]},{"date":"2026-10-03","key":"MDAQMD","district":"Mojave Desert AQMD","edition":"District-Wide ERC Summary dated September 15, 2026","kind":"baseline","summary":{"certificates":39,"holders":25},"items":[]},{"date":"2026-10-03","key":"NCUAQMD","district":"North Coast Unified AQMD","edition":"ERC Banking Register, Active Registry (last revised Jan 5, 2016; printed Nov 22, 2022)","kind":"baseline","summary":{"certificates":4,"holders":4},"items":[]},{"date":"2026-10-03","key":"SBCAPCD","district":"Santa Barbara County APCD","edition":"Active ERC certificates, run date Sept. 22, 2026","kind":"baseline","summary":{"certificates":100,"holders":24},"items":[]},{"date":"2026-10-03","key":"SDAPCD","district":"San Diego County APCD","edition":"ERC Banking Registry, Class A active ERCs, last update August 12, 2025; MERC Banking Registry, last update May 18, 2023","kind":"baseline","summary":{"certificates":185,"holders":48},"items":[]},{"date":"2026-10-03","key":"SJVAPCD","district":"San Joaquin Valley APCD","edition":"Available Emission Reduction Credits, district reports of 2026-10-03","kind":"baseline","summary":{"certificates":2305,"holders":411},"items":[]},{"date":"2026-10-03","key":"TCAPCD","district":"Tehama County APCD","edition":"District ERC Bank log, Nov 24, 2025 (records-request response)","kind":"baseline","summary":{"certificates":24,"holders":14},"items":[]},{"date":"2026-10-03","key":"VCAPCD","district":"Ventura County APCD","edition":"ERC Certificates by Company report dated Monday, July 20, 2026","kind":"baseline","summary":{"certificates":166,"holders":58},"items":[]},{"date":"2026-10-03","key":"YSAQMD","district":"Yolo-Solano AQMD","edition":"District ERC Registry, May 19, 2025","kind":"baseline","summary":{"certificates":137,"holders":49},"items":[]},{"date":"2026-10-02","key":"FRAQMD","district":"Feather River AQMD","edition":"District ERC Register workbook (fraqmd.org), active certificates","kind":"baseline","summary":{"certificates":133,"holders":72},"items":[]},{"date":"2026-10-02","key":"SCAQMD","district":"South Coast AQMD","edition":"ERC & STERC Active List, July 2026","kind":"baseline","summary":{"certificates":760,"holders":358},"items":[]},{"date":"2026-10-02","key":"SMAQMD","district":"Sacramento Metro AQMD","edition":"Current ERC Certificate Holders report dated 18-Sep-26","kind":"baseline","summary":{"certificates":203,"holders":32},"items":[]}]}