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The problem being Ineffective Clean Energy Claims happening today and this problem could be fixed using Granular Certificates (Time-Stamped Energy Attribute Certificates).

Refer to the EnergyTag’s Blog on the Feasibility of Granular Certificates and Getting Started with EnergyTag for detailed explanation on problem and solution.

Definitions of Roles

• Producer: The owner of a Production Device which is valid for GC Issuance. 

• Granular Certificate Issuer (GC Issuer): A Granular Certificate Issuer is an organization responsible for the administration of the Granular Certificates within a Domain for an Energy Carrier, ensuring the avoidance of Double Counting of the Attributes represented by the Granular Certificates it administers throughout their lifetime.

• Consumer: The final beneficiary of GC/EAC cancelation and potentially the user of associated consumed energy. 

• GC Matcher (or GC-Consumption Matcher) (or Matcher): An Organization that matches the Attributes of canceled GCs to a specific quantity of energy consumption of a specific Consumer/Supplier, with a view to determining the content of a GC Matching Claim.

• Claim Verifier (or GC Claim Verifier): An organization checking that Granular Certificates (GCs) are canceled against the energy consumption measured at one or a group of multiple Consumption Points in compliance with the Matching rules in this standard and the guidelines in the GC Use Case Guidelines.

EnergyTag Configurations Overview

• Configuration #1 - GC Scheme evolves out of EAC Scheme: the GC Scheme is an evolution of an existing EAC Scheme such that thecurrently operating EAC Issuing Body evolves into a GC Issuer, 

• Configuration #2 - GC Scheme supplements EAC Scheme: the GC Scheme is an extension of an existing EAC Scheme and is managed by verified and approved third parties. Tasks and responsibilities related to the GC Scheme are performed by third-party entities in compliance with the rules and oversight of the existing EAC Scheme and EAC Issuing Body, and 

• Configuration #3 - the GC Scheme is based on Canceled EACs: this GC Scheme enables GC Issuance where the EAC Issuing body does not oversee the coordination with GCs for the same production. Instead, the GC Issuer takes such coordination upon itself. This involves canceling GCs upon their Issuance, for the same beneficiary as the beneficiary of the associated EACs for the same represented energy.

List of Crucial Attributes

• Energy Carrier (always Electricity).

• Unique identification number.

• Date when the Production Device became operational.

• Production/storage discharge interval, which shall be a maximum of one hour

• GC Issuance date-stamp.

• Source of produced energy.

• Technology used to produce energy.

• Name of the Production Device.

• Unique ID of the Production Device (if available).

• Capacity of the Production Device.

• Country/region of Issuance.

• Geographical location of the Production/Storage System that released the energy for which the GC is Issued (including zip code/postcode, street, city and country, and/or GPS coordinate). Where available, GPS coordinates shall be stated.

• Wh as the base unit rather than a multiple (kWh, MWh, etc.) unit.

• Volume of energy production represented  (i.e face value of the certificate) rounded down to the nearest Wh whole number.

• Identity of the GC Issuer.

• Whether it is Issued from production or released from storage.

• Whether or not it can be used to inform consumers of the origin of the energy they consume (i.e. Disclosure).

• Whether or not it has been Issued following Energy Carrier conversion or release from energy Storage.

• Configuration the GC is issued (i.e. Config-1,2 or 3).

Matching and Claim Verification Explained

• GC Matching (or Granular Matching or Matching): Allocating Attributes of canceled GCs to a corresponding quantity of consumed energy, for well-specified Matching Features.

• Temporal Matching (or GC Temporal Matching: Associating the period of time during which energy is produced or stored and which has been recorded on the GC at its Issuance with the corresponding time at which the GC is canceled and the energy is consumed. The time interval is equal to or less than 60 minutes and evidence of energy production and consumption is provided by GCs.

• Geographical Matching (or GC Geographical Matching): Associating the geographical location of energy production or storage which has been recorded on a GC at its Issuance, with the geographical location of energy consumption and for which the GC is canceled. For example, Geographical Matching may take place within physically interconnected zone(s) or Bidding Zone(s).

• GC Matching Claim (or Matching Claim): A statement by a Consumer or Supplier of energy regarding the proportion of their consumption being matched to GCs, and the resulting Attributes allocated to this consumption.