What are guarantees of origin certificates?
Matthew Wilson
Updated on March 02, 2026
A Guarantee of Origin (GO) is a tradable commodity that represents a claim to the environmental benefits associated with renewable power generation. GOs are traded electronically in the voluntary market for renewable energy certificates and are not tied to the physical delivery of electricity.
How do I get a guarantee of origin?
Guarantees of Origin can either be contracted with an electricity supplier (bundled) or with a separate contract with a Guarantees of Origin supplier (unbundled) – a growing number of companies source renewable energy unbundled from their electricity supplier in order to maximize the value.
What is renewable energy Guarantees of Origin?
What is it? The Renewable Energy Guarantees of Origin (REGO) scheme provides transparency to consumers about the proportion of electricity that suppliers source from renewable generation. All EU Member States are required to have such a scheme.
What is GoO in renewable energy?
A Guarantee of Origin (GoO) is used as proof that power has been generated from renewable sources. One certificate represents the generation of 1 Megawatt hour of electricity.
Who can buy guarantees of origin?
1 GO is useable within 12 months. Within that validity time, it can be bought by electricity suppliers or any balancing responsible corporation who want to source their electricity from renewable energy sources.
What are Rego certificates?
The Renewable Energy Guarantees of Origin (REGO) certificate was developed to meet an EU requirement for all member states to be able to record and report what proportion of electricity consumption was from renewable sources and are issued at a rate of 1 REGO per MWh (Megawatt hour) of electricity generated.
What is rec power?
A renewable energy certificate (REC) is a tradeable, market-based instrument that represents the legal property rights to the “renewable-ness”—or all non-power attributes—of renewable electricity generation.
How do energy companies guarantee renewable energy?
Good Energy uses power purchase agreements (PPAs) which means that they buy electricity directly from wind farm and solar generators rather than buying the majority of their electricity on wholesale markets and then buying ‘REGOs’ which guarantee the equal amount of electricity created from fossil fuels is matched by …
What are Regos?
REGOS, otherwise known as Renewable Energy Guarantees of Origin, are certificates which aim to provide transparency to customers. They are designed to confirm that energy purchased by consumers is from renewable sources.
What is an energy attribute certificate?
Energy Attributes Certificates (EAC) are issued as proof of electricity produced by renewable sources. Each EAC endorses that 1MWh was generated and injected to the grid by a specific renewable source, such as wind or solar plant.
What is a ROC payment?
ROCs are essentially the green certificates issued to electricity generators and bought by suppliers to show that they have fulfilled the Renewables Obligation (RO). A ROC is issued to the operator of an accredited renewable energy generating station for every MWh of renewable electricity it generates.
What is a guarantee of Origin (GO)?
Guarantee of origin. A Guarantee of Origin (GO or GoO) is a tracking instrument defined in article 15 of the European Directive 2009/28/EC. A GO labels electricity from renewable sources to provide information to electricity customers on the source of their energy.
What is the meaning of the word guarantee?
Definition of guarantee (Entry 2 of 2) transitive verb. 1 : to undertake to answer for the debt, default, or miscarriage of guarantee a loan. 2 : to engage for the existence, permanence, or nature of : undertake to do or secure guarantee the winning of three tricks.
What are the guarantees of origin for electricity?
When a company buys guarantees of origin, as documentation for the electricity delivered or consumed, the guarantees of origin are cancelled in the electronic certificate registry.
What information does a guarantor have to provide?
The guarantor must disclose the nature of the guarantee (terms, history, and events that would put the guarantor in a position to fulfill its obligation), the maximum potential liability under the guarantee, and any provisions that might enable the guarantor to recover any money paid out under the guarantee.