Guarantees of Origin

A Guarantee of Origin (GO) certifies that one megawatt-hour of electricity was produced from renewable sources. As a key instrument in European energy markets, GOs enable suppliers to offer verified green electricity to their customers. They support transparency, consumer choice, and cross-border trading, playing a vital role in accelerating the transition to renewable energy.

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GO: Key to Energy Transparency

Guarantees of Origin (GOs) provide clear, verifiable information about where, when, and how renewable electricity is generated. Each certificate contains detailed data and is tracked in national registries, preventing double counting. This standardised system allows businesses and consumers to confidently support renewable energy while ensuring supplier claims are accurate, credible, and fully EU-compliant.

Why GOs Matter

  • Traceable renewable generation – fully audited and registry-tracked

  • Detailed provenance data – includes location, vintage, and technology type

  • Supports sustainability reporting – helps with Scope 2 emissions and credible environmental claims

  • Each GO certifies 1 MWh from a specific renewable source and vintage

  • Access via exchange and over-the-counter markets

  • Full audit-ready documentation and registry compliance

  • Advice on sourcing strategies and long-term procurement

How we help you:

Guarantees of Origin Made Simple

We source Guarantees of Origin directly from the exchange, traders, and renewable energy producers across Europe, ensuring competitive prices and reliable supply. Whether you need spot purchases or long-term procurement strategies, we tailor solutions to match your goals.

How It Works

  • Step 1

    Request Guarantees of Origin

    Share your energy certificate needs, and well provide you wit a proposal for the right GOs.

  • Step 2

    Source Selection

    Choose from a range of certified renewable energy sources, carefully researched and assesed by our team.

  • Step 3

    Purchase & Certification

    We handle the entire process, from sourcing GOs to registering them on your behalf, ensuring ful transparency.

Contact Us

TAKE THE NEXT STEP

Contact Grey Epoch today to learn more about our services and how we can help you navigate the voluntary carbon market.

40%

typical savings in trading fees

1bn

carbon products traded annually

2nd

largest ETS trader globally

18yrs

active in carbon markets

 FAQs

 

  • A GO certifies the production of one megawatt-hour (MWh) of renewable electricity, providing consumers and businesses with confidence in their renewable electricity claims. GOs underpin disclosure frameworks and renewable energy tracking in Europe.

  • Each GO includes detailed metadata such as generation technology, location, and vintage, with tracking through official registries preventing double counting.

  • They are essential for accurate Scope 2 emissions reporting, allowing organizations to claim renewable electricity consumption reliably.

  • GOs are tradable across interconnected European registries, supporting cross-border market liquidity and renewable energy sourcing.

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Grey Epoch Europe Limited (FRN: 959638) is an appointed representative of Thornbridge Investment Management LLP (FRN: 713859) which is authorised and regulated by the Financial Conduct Authority.

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