Energy Attribute Certificates (EACs)

Green Electricity for your Business

Energy Attribute Certificates (EACs) describe global instruments which certify that a specific unit (usually 1 MWh) of electricity was produced from a renewable source. EACs comply with Greenhouse Gas Protocol Scope 2 Guidance. Energy Attribute Certificates (i.e. GoOs, RECs & I-RECs) are the only widely recognized instruments guaranteeing the renewable credentials of the supplied electricity. These certificates are a tradeable commodity.

Several manners to reach renewable energy targets exist and as global CO2 emissions are to be reduced by at least 45% by 2030, documenting your energy by using EACs is an effective way to improve sustainability. STX has established its reputation as a reliable partner for over 4000 counterparties through innovation, expertise, and liquidity provision. Whether your needs are for voluntary purposes or compliance markets, our specialists will guide you through available options, giving you improved market visibility, enabling you to make better-informed procurement decisions.

EAC systems

Globally there are several different EAC systems to claim the use of renewable energy. The map below shows you the participating countries and market boundaries of the most common schemes:



Guarantee of Origin (GoO) is the official standard to certify the renewable origin of electricity in Europe. Unbundled from the physical electricity, one guarantee of origin always represents the injection of one MWh of green electricity into the grid.

Guarantee of Origin


International Renewable Energy Certificate (I-REC) is the internationally used standard to certify the renewable origin of electricity. One I-REC guarantees the origin of one MWh of green electricity injected into the grid.

International Renewable Energy Certificate


A Renewable Energy Certificate (REC) is the official standard to certify the renewable origin of electricity in North America, comprising USA and Canada. Unbundled from the physical electricity, one Renewable Attribute Certificate equals one MWh of renewable electricity.

Renewable Energy Certificate


Buying Guarantees of Origin with the ecolabels below guarantees that the renewable energy adheres to the ecolabel’s requirements.


Naturemade Star 

Swiss ecolabel for ecological improvements.

Plants receive certification through Association for Environmentally Sound Energy (VUE)

Supported by WWF and Konsumentenforum Schweiz



EACs fulfill stricter environmental criteria

Simultaneously allows fundraising for RE projects in developing countries



Bra Miljöval

Swedish ecolabel established in 2002 through Svenska Naturskyddsföreningen (The Swedish Society for Nature Conservation)

Translation “Good Environmental Choice”.

Enforces the environmental protection through the generating plants.



German ecolabel promoting energy from new power plants

Managed by TÜV Nord.




German ecolabel that promotes the use of new power plants

Supports new technologies and invests in new projects




German ecolabel from the Hamburg Institute to promote new power plants.

Supports the expansion of and investment in renewable power projects.

STX-Climate-Solutions Hydro Power STX-Climate-Solutions Solar Energy STX-Climate-Solutions-Biogas


  • Solar Power
  • Concentrated Solar Power
  • Hydro Power
  • Power through Biomass
  • Wind Power
  • Geothermal Power


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