Electric Power, Energy Transition, Agriculture, Renewables, Biofuel
November 03, 2025
Platts proposes to change EU Guarantees of Origin assessments to AIB Guarantees of Origin
Platts, part of S&P Global Commodity Insights, proposes to change the specification of its EU Guarantees of Origin (GO) price assessments to Association of Issuing Bodies (AIB) Guarantees of Origin (GO), effective Jan. 2, 2026.
The EU GO assessments currently reflect EU Wind, EU Solar, and EU Biomass. Platts proposes to change the specifications, so the prices reflect certificates of origin in the AIB member countries that have European Energy Certificate System (EECS) certification. The AIB aggregates national registry data from each AIB member-country.
This proposed change will make the GO assessments more reflective of the contracts traded in the European market and better define the country-origin of the certificates.
Platts Nordic Hydro assessments will remain unchanged.
The assessments affected by this proposal are:
| Current Assessment Name | Proposed change as of Jan. 2 | Assessment Symbol | Mirrored Symbol | Monthly Average Symbol | MAvg Mirrored Symbol |
| EU Wind GO, Current year | AIB Wind GO, Current year | EWGY004 | MWGY004 | EWGY003 | MWGY003 |
| EU Wind GO, Year 01 | AIB Wind GO, Year 01 | EWGY104 | MWGY104 | EWGY103 | MWGY103 |
| EU Wind GO, Year 02 | AIB Wind GO, Year 02 | EWGY200 | MWGY200 | EWGY203 | MWGY203 |
| EU Wind GO, Year 03 | AIB Wind GO, Year 03 | EWGY300 | MWGY300 | EWGY303 | MWGY303 |
| EU Wind GO, Year 04 | AIB Wind GO, Year 04 | EWGY400 | MWGY400 | EWGY403 | MWGY403 |
| EU Solar GO, Current year | AIB Solar GO, Current year | ESGY200 | MSGY200 | ESGY203 | MSGY203 |
| EU Solar GO, Year 01 | AIB Solar GO, Year 01 | ESGY300 | MSGY300 | ESGY303 | MSGY303 |
| EU Solar GO, Year 02 | AIB Solar GO, Year 02 | ESGY400 | MSGY400 | ESGY403 | MSGY403 |
| EU Biomass GO, Current year | AIB Biomass GO, Current year | EBGY200 | MBGY200 | EBGY203 | MBGY203 |
| EU Biomass GO, Year 01 | AIB Biomass GO, Year 01 | EBGY300 | MBGY300 | EBGY303 | MBGY303 |
| EU Biomass GO, Year 02 | AIB Biomass GO, Year 02 | EBGY400 | MBGY400 | EBGY403 | MBGY403 |
Platts symbols for these assessments will not change.
Each GO represents the environmental attributes of renewable electricity and represents one megawatt hour of electricity generated from a renewable source.
Details about the methodology for Platts GO assessments can be found here: Specifications Guide Global Renewables Certificates.pdf
Please send all feedback and comments to pricegroup@spglobal.com and global_renewables@spglobal.com by Nov. 28, 2025.
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 will make comments not marked as confidential available upon request