Guarantees of Origin (GOs)
Source and Manage GOs Across Europe for Credible Renewable Energy Claims
Buy GOsWhat Are GOs
Guarantees of Origin (GOs) are renewable energy certificates used across Europe to verify that 1 MWh of electricity was generated from renewable sources. Issued by authorized registries in each country, GOs provide traceable information on generation date, location, and technology type.
Market Coverage
GOs are the standard certificate for renewable electricity across Europe, but the system is not fully unified. Most European countries issue GOs under the AIB (Association of Issuing Bodies) framework using the European Energy Certificate System (EECS). There are currently 39 members from 30 countries. For a full list of registries and member countries, see our dedicated AIB Registries page. However, some countries operate their own national systems, such as the UK's REGOs, Poland’s GO, and Bulgaria’s GO. We provide access to both AIB GOs and GOs issued by non-AIB systems.
GOs Generation Sources
GOs can be issued for electricity generated from various renewable technologies and are available on our Marketplace:
Solar
Wind
Hydropower (including small hydro)
Biomass
Geothermal
Why Companies Buy GOs
GOs are the standard mechanism for demonstrating renewable electricity use across Europe. They support Scope 2 emissions reduction and enable companies to make credible environmental claims in line with voluntary frameworks.
How to Get Started
You can source GOs directly through our Marketplace. Choose your country, volume, technology, vintage—or tell us your goals, and we’ll help you find the best options.
Talk to the teamRetirement & Claiming Process
To make a renewable energy claim, a GO must be redeemed (retired) for the end-user and country where the renewable electricity is being reported. While AIB countries are treated as a harmonized market under frameworks like RE100 and CDP, each registry enforces that GOs are canceled for the correct country. This rule exists to ensure that the renewable energy share of each country reflects actual usage and is not inflated by external retirements. Our platform ensures that redemption is performed correctly and in line with both registry and reporting requirements.
Voluntary Schemes
GOs we provide are aligned with the requirements of all major voluntary schemes.
Ecolabels
European GOs can carry ecolabels such as EKOenergy, which signal additional environmental quality beyond basic renewable generation. Ecolabels help companies strengthen their sustainability claims and demonstrate responsible sourcing practices.
Need Pricing or Guidance?
Europe-wide (AIB & national registries)
RE100 & other frameworks
EKOenergy label available
Flexible sourcing
Simple retirement & documentation
Get Started
Choose country, volume, technology, and vintage, or just tell us your goals. We’ll help you get the best match.
Talk to the Team