European Residual Mix Calculation

Grexel is responsible for calculating the European Residual Mixes and the European Attribute Mix on behalf of the Association of Issuing Bodies (AIB).  

Why is this so crucial for reliable Electricity Disclosure and Guarantees of Origin?

Case: Ireland - In Need of an Efficient Online Registry for GOs

Ireland is a good example of how CMO.grexel online registry helps issuing bodies and local energy authorities to manage their energy certificates with efficiency, transparency and, let’s not forget, low cost.

Grexel discloses and compensates its Carbon Footprint

Being an environmentally aware company, Grexel® has decided to disclose and compensate its own carbon footprint.

Norwegian Central Registry, NECS

The Grexel-built Norwegian Energy Certificate System, NECS, is the first certificate registry supporting internationally connected disclosure and support certificate schemes.

Energy Certification in Egypt - Thriving in Turmoil

To support the rising trend of renewable energy projects in Egypt, the consumer protection regulatory agency, ERA, seeked Grexel's assistance in designing a guarantee of origin system compatible with the European markets.



Our Services

Regulatory and Market Engineering Services
How can we optimize the effectiveness of support schemes and empower consumers to be the driving factor behind green economy?
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Energy Certificates for Beginners »

Central Registry Systems Services
Need a central registry system to set up a trading scheme for environmental commodities or rights, such as Guarantees of Origin? See what the market leader has to offer.
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Our Clients

We host a central registry (CMO.grexel) for Guarantees of Origin for Croatia, Denmark, Hungary, Iceland, Ireland, Luxembourg and Sweden.
Login to CMO.grexel»

We power a central registry for support certificates for Norway (NECS) and Sweden (Cesar).
It is the world’s first certificate-based joint support scheme between two countries!
Login to NECS» / Login to Cesar»

We also provide a central registry (GGT) for the Biomethane Certification Scheme in the UK


Grexel is responsible for calculating the European Residual Mixes for AIB
Why is this so crucial for reliable Electricity Disclosure and Guarantees of Origin?
Read More»

Say Hello to GECCO
Grexel’s Environmental Commodity Clearing Office, GECCO™, is now open and running in CMO.grexel. 
Read More»

EECS Activity in Grexel's registries in 2014
The majority of all EECS certificates issued came from Grexel's registries
Read More»

Scientific Contributions
Grexel is active in the energy certification field. We are involved in its development, also from a non-business perspective.
Read More»

What is going on at Grexel? 
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Market Data

  2015 2014
Norway 122 894 392 130 513 251
Denmark 16 382 392 16 533 662
Finland - Grexel 20 874 102
Germany - Öko
Iceland 5 827 219 10 041 952
Ireland 1 570 833
Luxembourg 127 519 47 010
Sweden 25 215 923 22 633 802

More Statistics

CMO.grexel reports
EECS Market data from Denmark, Finland, Germany, Iceland, Luxembourg and Sweden

NECS GO reports
EECS market data from Norway

Cesar GO reports
Swedish national GO market reports

NECS Elcertificate reports
Norwegian support certificate market reports

Cesar Elcertificate reports
Swedish support certificate market reports

AIB Statistics
EECS certificate market information

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