Energy Transition, Emissions, Renewables
November 19, 2025
Platts to discontinue some Massachusetts, California REC assessments
Platts, part of S&P Global Energy, will discontinue some Massachusetts and California Renewable Energy Certificates (RECs) price assessments, effective Nov. 26, 2025.
Platts initially proposed the discontinuation Nov. 12, in a published subscriber note available here.
In Massachusetts, the current legislation phased out solar carve-out 1, and solar generation will now be included as part of Class 1 RECs, which are currently assessed by Platts.
Platts will also discontinue the California REC Prior Year Bucket 1, Bucket 2 and Bucket 3 price assessments due to the lack of liquidity associated with prior vintages, as feedback shows market participants are interested in vintages for current and future compliance years. Platts suspended these assessments Oct. 30, in a subscriber note available here.
The symbols to be discontinued are as follows:
Symbol | Assessment |
RECMAS0 | Massachusetts SREC 1 Current Year Vintage Wkly |
MECMAS0 | Massachusetts SREC 1 Current Year Vintage Wkly (Mirror) |
AREAG00 | California Bundled REC Bucket 1 Prior Year Vintage Wkly |
AREAI00 | California Bundled REC Bucket 2 Prior Year Vintage Wkly |
| AREAK00 | California REC Bucket 3 Prior Year Vintage Wkly |
AEMIH00 | CAISO Emissions Adjusted California Bundled REC Bucket 1 Prior Year Vintage |
AEMIH03 | CAISO Emissions Adjusted California Bundled REC Bucket 1 Prior Year Vintage MAvg |
| AEMIB00 | CAISO California Bundled Bucket 1 Prior Year Abatement Value |
| AEMIJ00 | CAISO Emissions Adjusted California Bundled REC Bucket 2 Prior Year Vintage |
AEMIJ03 | CAISO Emissions Adjusted California Bundled REC Bucket 2 Prior Year Vintage MAvg |
AEMID00 | CAISO California Bundled Bucket 2 Prior Year Abatement Value |
MREAG00 | California Bundled REC Bucket 1 Prior Year Vintage Wkly (Mirror) |
MREAI00 | California Bundled REC Bucket 2 Prior Year Vintage Wkly (Mirror) |
MREAK00 | California REC Bucket 3 Prior Year Vintage Wkly (Mirror) |
The assessments are currently found in the fixed pages CLE3202, CLE3205, PEA0751, PEA0752, EVA3007, EVA3010, AGP2751 and AGP2752, as well as REC Daily and Megawatt Daily.
Please send any questions, comments, or feedback to americas_renewables@spglobal.com and pricegroup@spglobal.com.
For written comments, please provide a clear indication if comments are not intended for publication by Platts for public viewing.
Platts will consider all comments received and make comments not marked as confidential available upon request.