Products & Services

Grexel's products and the concept equips the issuing body organizations with dependable information systems that fulfill both market and government requirements. Read more about our approach.

G-Rex
The Guarantee of Origin registry system registers production devices and receives meter readings. It meets the RES-E directive requirements and supports CHP as well as electricity disclosures.

C-Rex
The Green certificate registry system for tradable certificates facilitates on-line banking style accounts and fine grained authorization. The system manages the issuance, transfers and redeeming of certificates. Easy to modify to support different certificate schemes.

A-Rex
CO2 allowance registry for European Union and Kyoto cap and trade systems. Supports initial allocations, transfers, surrenders, CDM, JI, etc.

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