General Enquiries


Church Studio400 Springvale RoadSheffieldS10 1LPUnited Kingdom

Our services

Central Issuer for
the I-REC Standard

We are the Central Issuer and Centre of Excellence for I-RECs (International Renewable Energy Certificates) and accredited by the I-REC Standard. GCC verifies and approves the registration of production facilities and requests for certificates for their output.

The global I-REC registry operated by Evident provides end-users with a uniquely verifiable confirmation of ownership as the single register for I-REC certificates.

I-REC certification meets RE100 and CDP requirements in accordance with the Greenhouse Gas Protocol Scope 2 Guidance. RE100 companies commit to using 100% renewable electricity for their global operations by either producing or purchasing from renewable sources. CDP helps companies measure and report their environmental impact, set goals, and engage stakeholders.

Learn more about the RE100 Standard here, CDP here, and the Greenhouse Gas Protocol Scope 2 Guidance here

Central Issuer
for C-Capsule

GCC is the Central Issuer for C-Capsule, which is a standard for durable Carbon Dioxide Removal (CDR), and certifies carbon that has been durably removed from the atmospheric cycle.

C-Capsule operates an open framework and clear governance structure to provide trustworthy, universal access to the Voluntary Carbon Market for all actors. C-Capsule offers a market-based solution to scale up supply by accelerating access to finance for high-quality, durable CDR.

About us

We are a world leader in certifying renewable energy, with over 20 years of experience and are a key delivery partner for the I-RECs. From 2014 to February 2023, we issued 385 million I-RECs across 27 countries.

We are also the central issuer for C-Capsule, which is a standard for durable Carbon Dioxide Removal (CDR).

GCC became part of the Evident group in 2022.


years of experience


power projects certified


renewable energy certified


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 I-REC Standard.

Superior Customer Experience

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

Cost Effective

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


Annual Review 2021