Central Issuer for I-RECs

We're not just a certification company; driven by a dedication and commitment to environmental responsibility, we take immense pride in certifying renewable energy production.


Renewable Energy Certified

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Latest news

Important announcements

  • Residual Mix Deadline Notice

    The Residual Mix Deadline for submitting 1 July 2023 - 31 December 2023 eligible production is 30 September 2024. The Residual Mix Deadline for submitting 1 January 2024 to 30 June 2024 eligible production is 31 May 2025.

    Production Month Year X Issuance Deadline Year X+1
    January - June 31st May
    July - December 30th September

    For further information regarding the consultation, please click the "Learn more" link below.

    Learn more
  • Splitting Issued Certificates

    It is best practice to submit Issue Requests based on the actual period of production. In cases where a Registrant is providing monthly production data, it is advised to issue certificates accordingly (i.e. on monthly basis).

    As an example, if data is provided in daily or monthly reports and the period covered is 1st June - 31st July, such a request is possible for a Registrant to submit as an Issue Request. However, following approval of the Issue Request by the Issuer, it will not be possible to split the issued certificates into two separate periods, one for June and one for July. Therefore, it is recommended to submit two separate Issue Requests for this case.

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Our emphasis is on creating a sustainable society, we are dedicated to being a responsive professional partner in assisting organisations to meet their environmental goals - and are committed to being flexible and adaptable to meeting customer needs.


Our team was part of the advisory on the formation of the European RECS programme, EU Guarantee of Origin, UK Renewables Obligation, and The International Attribute Tracking Standard.

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GCC values every customer equally, be it an international power company or a micro-generator. Our goal is to provide excellent service to every customer.

Solution Focused

GCC specialises in new markets and those seeking international recognition. We understand how to provide confidence to national authorities and international consumers.

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Our operating model has been designed to foster efficient working, economically.

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Annual Review 2022