oSIST prEN 16325:2023
(Main)Guarantees of Origin related to energy - Guarantees of Origin for Electricity, gaseous hydrocarbons, Hydrogen, and heating & cooling
Guarantees of Origin related to energy - Guarantees of Origin for Electricity, gaseous hydrocarbons, Hydrogen, and heating & cooling
This European Standard specifies requirements for Guarantees of Origin of electricity from all energy sources and of gaseous
hydrocarbons, Hydrogen, and heating & cooling.
This standard will establish the relevant terminology and definitions, requirements for registration, issuing, transferring and
cancellation in line with the RED and Cogeneration.
This standard will specify how to create accounts and associated ownership rights.
This standard will also cover measuring methods and auditing procedures.
These Guarantees of Origin may be traded and/or used for Disclosure/Labelling.
This standard is suitable for certification purposes.
This standard will specify the requirements on the issuing bodies and on the auditing bodies.
Herkunftsnachweise im Energiebereich - Herkunftsnachweise für Elektrizität, gasförmige Kohlenwasserstoffe, Wasserstoff sowie Wärme und Kälte
Dieses Dokument legt Anforderungen an Herkunftsnachweise für Strom, mehrere gasförmige Energieträger sowie Wärme und Kälte fest. Dieses Dokument schreibt die maßgeblichen Begriffe und Definitionen fest sowie die Anforderungen an die Registrierung, an die Ausstellung, Übertragung und Entwertung von Herkunfts
nachweisen im Einklang mit den folgenden Richtlinien: Erneuerbare-Energien-Richtlinie (2018/2001/EU), die Richtlinie mit gemeinsamen Vorschriften für den Elektrizitätsbinnenmarkt (2019/944/EU), die Richtlinie über Energieeffizienz (2012/27/EU) und andere einschlägige Rechtsvorschriften der Europäischen Union. Dieses Dokument umfasst außerdem Mess- und Auditverfahren.
Die Anerkennung von Herkunftsnachweisen durch die Mitgliedstaaten ist nicht Gegenstand dieses Dokuments.
Garanties d’origine liées à l’énergie - Garanties d'origine de l'électricité, des hydrocarbures gazeux, de l’hydrogène, du chauffage et du refroidissement
Le présent document spécifie les exigences concernant les garanties d’origine de divers vecteurs énergétiques gazeux d'électricité, du chauffage et du refroidissement. Il établira la terminologie et les définitions pertinentes, ainsi que les exigences d’enregistrement, d'émission, de transfert et d'annulation des garanties d’origine, conformément aux directives suivantes : la Directive sur les énergies renouvelables (2018/2001/UE), la Directive concernant des règles communes pour le marché intérieur de l'électricité (2019/944/UE), la Directive relative à l'efficacité énergétique (2012/27/EU) et autres législations pertinentes de l’Union européenne. Le présent document couvrira également les méthodes de mesurage et les modes opératoires des audits.
La reconnaissance des garanties d’origine par les États membres ne relève pas du domaine d'application du présent document.
Potrdilo o izvoru energije - Potrdilo za električno energijo, plinaste ogljikovodike, vodik ter ogrevanje in hlajenje
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 16325:2023
01-februar-2023
Potrdilo o izvoru energije - Potrdilo za električno energijo, plinaste ogljikovodike,
vodik ter ogrevanje in hlajenje
Guarantees of Origin related to energy - Guarantees of Origin for Electricity, gaseous
hydrocarbons, Hydrogen, and heating & cooling
Herkunftsnachweise im Energiebereich - Herkunftsnachweise für Elektrizität, gasförmige
Kohlenwasserstoffe, Wasserstoff sowie Wärme und Kälte
Garanties d’origine liées à l’énergie - Garanties d'origine de l'électricité, des
hydrocarbures gazeux, de l’hydrogène, du chauffage et du refroidissement
Ta slovenski standard je istoveten z: prEN 16325
ICS:
27.010 Prenos energije in toplote na Energy and heat transfer
splošno engineering in general
oSIST prEN 16325:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 16325:2023
EUROPEAN STANDARD DRAFT
prEN 16325
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2022
ICS 27.010
Will supersede EN 16325:2013+A1:2015
English version
Guarantees of Origin related to energy - Guarantees of
Origin for Electricity, gaseous hydrocarbons, Hydrogen,
and heating & cooling
Garanties d'origine liées à l'énergie - Garanties Herkunftsnachweise im Energiebereich -
d'origine de l'électricité, des hydrocarbures gazeux, de Herkunftsnachweise für Elektrizität, gasförmige
l'hydrogène, du chauffage et du refroidissement Kohlenwasserstoffe, Wasserstoff sowie Wärme und
Kälte
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/CLC/JTC 14.
If this draft becomes a European Standard, CEN and CENELEC members are bound to comply with the CEN/CENELEC Internal
Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any
alteration.
This draft European Standard was established by CEN and CENELEC in three official versions (English, French, German). A
version in any other language made by translation under the responsibility of a CEN and CENELEC member into its own language
and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN and CENELEC members are the national standards bodies and national electrotechnical committees of Austria, Belgium,
Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia,
Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.Recipients of this draft are invited to submit, with their comments, notification
of any relevant patent rights of which they are aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
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Contents Page
European foreword . 3
Introduction . 4
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 Generic Rules for guarantees of origin (for all energy carriers) . 18
5 Rules specific to individual energy carriers . 46
Annex A (normative) Energy Source Type codes . 59
Annex B (normative) Technology codes . 68
Annex C (normative) Coding structures . 75
Annex D (normative) Cogeneration GO codes — Uses of Heat. 79
Annex E (normative) Dissemination level of the physical energy for which the GO is issued . 80
Bibliography. 81
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European foreword
This document (prEN 16325:2022) has been prepared by Technical Committee CEN/CLC/JTC 14 “Energy
management and energy efficiency in the framework of energy transition”, the secretariat of which is held
by UNI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 16325:2013+A1:2015.
In comparison with the previous edition, the following technical modifications have been made:
— the scope of the document is extended to guarantees of origin of several gaseous energy carriers and
heating and cooling.
This document will establish the relevant terminology and definitions, and requirements for the
registration, issuance, transfer and cancellation of GOs in line with the following directives:
— Directive 2018/2001/EU on the promotion of the use of energy from renewable sources,
— Directive 2019/944/EU on common rules for the internal market for electricity,
— Directive 2012/27/EU on energy efficiency,
and other relevant European Union law.
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Introduction
General
This document sets out how Guarantees of Origin (GOs) are standardized in line with relevant European
(EU) directives and existing voluntary schemes. The aim of the standard is, therefore, to create a
standardized transferable GO that can be used to facilitate the disclosure of the origin of energy, the
identification of particular energy sources, to its final customer, including by labelling schemes, like
environmental/ecological labels. For the purpose of the Renewable Energy Directive (2018/2001/EU,
often referred to as RED II), a GO means an electronic document which has the sole function of providing
evidence to a final customer that a given share or quantity of energy was produced from renewable
sources. A GO may serve other purposes where Member States have arranged to have GO’s for other types
of energy.
There is a growing demand from final customers for energy that can be reliably certified. Electricity
suppliers are required to provide reliable disclosure information to final customers on the origin of the
energy they supplied them. The EU GO system already meets many of the needs of these stakeholders and
revising the EN 16325 standard on GOs can further strengthen the current system.
The EN 16325 standard on GOs is being revised to ensure that it fulfils the requirements of the recast
Renewable Energy Directive (2018/2001/EU), the Directive on common rules for the internal market for
electricity (2019/944/EU), the Directive on Energy Efficiency (2018/844/EU) and other relevant
European laws. The revised standard will provide a basis for the further development of energy attribute
tracking in the EU, to achieve greater harmonization between the national systems of EU Member States
and EEA countries.
GOs are certificates which are tracked through a book and claim system and which thereby underpin the
trading and disclosure of energy. The Renewable Energy Directive and Directive on Energy Efficiency
require Member States to recognize a GO issued by another Member State unless it has “well-founded
doubts about its accuracy, reliability, or veracity” (RED II - Art. 19.9). Further, the system should prevent
double-counting and be resistant to fraud. Therefore, a European Standard for GOs for all member states
is important. As per the revised Renewable Energy Directive, the content of the standard applies to energy
from renewable sources, be it “electricity, or gas, including hydrogen, or heating or cooling” (RED II - Art.
19.7). The content of this standard can also be applied for energy from non-renewable sources.
The elaboration and publication of European Standards will allow certification bodies to develop their
activities on consensual and recognized practices and this will increase the credibility of the certificates
they deliver.
Description of the Guarantee of Origin system and its components
Basic description of the GO system and its components
The purpose of a guarantee of origin (GO) system is to track the attributes of a given megawatt-hour
(MWh) of energy from generation/production to consumption. In doing so, the system allows final
customers to know the origin of the energy supplied to them. For instance, this enables those final
customers to choose to consume/use energy from renewable sources or to consume/use decarbonised
and low-carbon energy. This is accomplished by energy producers or generators requesting the issuance
of a GO for each MWh of energy they produce/generate. These GOs can then be traded until they are
cancelled by/for a final customer. This cancellation allows the final customer to state that they have used
this unit of energy. The underlying goal of GOs is to facilitate consumer choice, which indirectly could act
as a market incentive for renewable production.
The guarantee of origin system for electricity was first legislated for at European level in Article 5 of
Directive 2001/77/EC on the promotion of electricity produced from renewable energy sources in the
internal electricity market. This article was later amended by Article 15 of the Renewable Energy
Directive 2009/28/EC (often referred to as RED I). Article 15.1 states that “…Member States shall ensure
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Competent body
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that the origin of electricity produced from renewable sources can be guaranteed… for the purpose of
proving to final customers the share or quantity of energy from renewable sources in an energy supplier’s
energy mix”. Renewable Energy Directive 2018/2001/EU, in Art. Nineteen extended the scope of GOs to
cover gas (including hydrogen) as well as heating and cooling. The existing Energy Type Electricity is
therefore extended to include the Energy Type Gas and Heating and Cooling:
a) Electricity
b) Gas
c) Heating and Cooling
Article 14.10 of the Energy Efficiency Directive determines that upon request, a Member State shall issue
a GO for Electricity produced from High-Efficiency Cogeneration, for the purpose of demonstrating that
such production method leads to savings of primary energy used.
At the time of revision of this EN 16325 standard in 2020, the European energy market has adopted the
GO system for electricity initiated by the first Renewable Energy Directive (2001/77/EC) and updated in
the second and third one (2009/28/EC and 2018/2001/EC).
A guarantee of origin system consists of certain basic components, which relate to the verification of the
underlying information, accurate generation of data, secure and electronic GO transfer as well as the use
of GOs for cancellation and disclosure. These basic components ensure accurate attribute tracking and
the avoidance of double disclosure, when the same unit of (renewable or decarbonised/low-carbon)
energy is disclosed more than once. Table 1 describes how these basic components relate to the GO life-
cycle.
Table 1 Main components of a GO system
Account Holder Registration Prevent access of fraudulent actors
Ensure rule-compliance contractually
Production Device Registration Verify plant data
Ensure data maintenance and re-verification
GO issuing Base issuing on verified meter readings
Verify shares of energy origin in multi-fuel plants
GO transfer Secure and electronic transfer independently from the
physical energy or energy trading
Non-mutability an uniqueness of certificate data
GO cancellation GO as the sole instrument to disclose renewable energy to
consumers
Disclosure Disclosure of the energy origin sold/consumed
Where applicable, calculation of the residual mix and
obligation to use it for untracked energy
Account Holder registration
GOs are held in accounts of electronic registries which are managed by Issuing Bodies. Only legitimate
companies (legal persons) with the intention of participating in the GO market (e.g. producers, traders
and/or energy suppliers, end users of energy) are permitted to register as GO account holders. By setting
a registration process and required documentation for account holders, the Competent Body or Bodies,
Disclosure Authority of each country makes the necessary steps to block fraudulent actors accessing the
market. Some countries may, at their discretion, limit access to the GO registry further to e.g. to energy
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market actors alone established in the national territory. After a successful registration process, an
account holder gains secure access to its GO account(s).
Production Device registration
Issuing of GOs is based on measured energy output from registered Production Devices. For this purpose,
all Production Devices, the owner/operator of which requests issuance of GOs, are registered in the GO
registry. Prior to the approval of a registration, a Competent Body or its agent verifies the registered
standing data (such as age, capacity, location, technology, energy medium) of the Production Device.
Periodically, the registration information is re-verified to ensure the up-to-date accuracy of the data.
GO Issuing
Issuing of GOs is made periodically (typically every month) for measured energy output from registered
Production Devices. In most countries, the energy output data are derived from Transmission or
Distribution System Operator’s data (e.g. imbalance settlement), which automatically portrays the
accurate amount of energy production netted from auxiliary consumption. Where (rarely) this is not the
case, the production data might come straight from the producer, in which case the Competent Body takes
the necessary additional steps to ensure the accuracy of the data (e.g. by verification of the metering
diagram).
For Production Devices producing energy from multiple energy sources (e.g. certain combined heat and
power plants), the measured total energy output is distributed to each energy source through a verified
declaration of the shares of different energy sources used in production. GOs are then issued for output
from each energy source in proportion to their share so that each GO only records one energy source. The
declaration process might cause a time lag of several months for the issuance of GOs from multi fuel
plants.
Issued GOs are deposited on the GO Account(s) of registered Account Holders. Each GO represents a value
of 1 MWh of energy and the information content of a GO, the attributes of the unit of energy, consists of
the standing information of the Production Device as well as information specific to the production such
as the energy source, production time, received support). Once the GO is issued, the information contained
on a GO is immutable (apart from possible error correction). The Competent Body ensures through
contractual and other means that the same energy origin is not tracked by any other means (e.g.
contractually or through another tracking system).
GO Transfer
Account Holders may access their GO Accounts to perform transactions such as the transfer of a GO to
another Account Holder’s account. GOs may be transferred independently from the transfer of the energy
to which they relate (2018/2001/EC, preamble 55).
GO Cancellation
The Cancellation (use) of a GO enables a claim on the origin of the energy supplied to a final customer.
Cancellation hence means the realization of the value of the GO for the Disclosure of energy origin to a
final customer. An Account Holder who performs a Cancellation unambiguously designates the
sold/consumed energy to which the Cancellation relates. This may imply a certain (renewable or
decarbonised/low-carbon) energy product or the generic mix of a supplier in a given year.
GO transfers between Account Holder’s in countries
between which no communication interface exists are handled usually through a process called ex-
domain cancellation, where a GO is cancelled in one country for disclosure of the energy origin of the
energy sold or consumed in another country.
Energy disclosure and residual mix
Each electricity supplier is obliged to disclose to its customers the energy origin of electricity sold
(2018/2001/EU, Article 19.8). This process, called “Disclosure”, is the purpose of GOs. GOs are used by
energy suppliers, and, in some countries, by consumers to self “green” the “regular” energy supplied to
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them by a supplier or directly purchased from e.g. an energy exchange. Sale of energy from renewable
1
energy origin shall take place accompanied by the cancellation of a GO .
The legal basis for a similar disclosure obligation exists to some extent for district heating and cooling
(see 2018/2001/EU, Article 24.1) and can be found for other types of energy in 2018/2001/EU, Article
19.8 paragraph 2. In order to avoid double claims on the origin of the same amount of energy, a disclosure
scheme linked to the cancellation of guarantees of origin is needed for all energy carriers for which a GO
system is introduced. No requirement exists for disclosure of the energy origin of gas at the time of
drafting this revised standard.
Residual Mix is the energy source mix excluding tracked energy generation attributes from the generation
mix. The concept of residual mix is an integral part of any energy origin disclosure system based on the
book-and-claim principle. The introduction of a GO (= book-and-claim) system provides a way to supply
energy with specified attributes, but also impacts the remaining attributes of energy supplied without a
GO. A residual mix is a logical consequence of implementing energy attribute tracking as it ensures that
the attributes represented by GOs are not double disclosed to other consumers through an implicit mix.
The use of uncorrected generation statistics for purposes of disclosure should be avoided. For the time
being a residual mix is only mandatory for electricity, but the same methodology should be extended for
other energy carriers as GO and disclosure systems for other energy carriers develop.
Electricity disclosure information provided by energy suppliers to their customers is verified by a
Disclosure Supervisory Body to ensure a) that a sufficient amount of GOs has been cancelled
corresponding to the suppliers’ disclosure statements and b) that for the remaining part of disclosure the
2
residual mix is correctly applied.
Complementing EN 16325 for agile response in changing circumstances
This standard covers the essential building blocks for a reliable system of guarantees of origin, and a basis
for reliable disclosure of the origin of energy. For efficiency of operation and deeper quality assurance,
harmonization of detailed processes is recommended, although such details may require frequent
updates e.g. to keep pace with developments in the market, and national policies.
There is need for a trade-off between the stability of a formalized standard and the more flexible
additional agreements that can be made between issuing bodies.
Ideally, this is done in a single platform where issuing bodies share experiences and concerns, and jointly
make decisions on the updates. A clear process for such decision-making between GO issuing bodies,
enables agile response to changing circumstances for GO system management.
1
Only exceptions include governmental support schemes and remaining shares of renewable energy attributes in the residual
mix.
2
or possible contractual tracking for non-renewable attributes.
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1 Scope
This document specifies requirements for Guarantees of Origin (GOs) of Electricity several gaseous
Energy Carriers, and Heating and Cooling. This document will establish the relevant terminology and
definitions, and requirements for the registration, issuance, transfer and cancellation of GOs in line with
the following directives: Renewable Energy Directive (2018/2001/EU), the Directive on common rules
for the internal market for electricity (2019/944/EU), the Directive on Energy Efficiency (2012/27/EU)
and other relevant European Union law. This document will also cover measuring methods and auditing
procedures.
Out of scope of this document is GO recognition by Member States.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 13443, Natural gas – standard Reference conditions
ISO 20675, Biogas - Biogas production, conditioning, upgrading and utilization - Terms, definitions and
classification scheme
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
account
record on a registration database (3.54) relating to a particular account holder (3.2) in which GOs (3.33)
are held
3.2
account holder
person or organisation in respect of whom an account (3.1) is maintained on a registration database (3.54)
3.3
affiliate
stakeholder assigned by the expression “related undertaking” by the IEMD (in relation to the electricity
market) and directive (EU) 2009/73 (in relation to the gas market)
3.4
alteration
correction by the competent body (3.12) of any data of a GO (3.33) where an error has been introduced
upon issuing the GO (3.33) or during the processing the GO (3.33)
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3.5
auxiliary
item of the production device (3.50) that is required for the functional operation of that production device
(3.50) that consumes energy
Note 1 to entry: An auxiliary can consume output produced by that production device.
Note 2 to entry: An auxiliary can consume energy in the form of any energy carrier.
Note 3 to entry: Energy consumed by an auxiliary used to facilitate the process is other energy than input and is thus
not converted into the output.
3.6
authorised measurement body
person or organization responsible for collecting and determining (on behalf of the registrant (3.53))
measured values of the import meter(s) (3.36) and export meter(s) (3.29) of a production device (3.50),
and which has been either:
— appointed under a domain GO scheme (3.20); or
— appointed by a competent body (3.12) as its agent (3.13);
for the purpose of measuring energy
3.7
attribute
data field specifying the characteristics of an energy unit produced by a production device (3.50) in terms
of the input(s) (3.37) used and/or the details (standing data) of that production device (3.50) and
production process
3.8
biomass
biodegradable fraction of products, waste, and residues from biological origin from agriculture, including
vegetal and animal substances, from forestry and related industries, including fisheries and aquaculture,
as well as the biodegradable fraction of waste, including industrial and municipal waste of biological
origin
3.9
cancel
mark, at the request of the holder of the account on which it is held, a GO (3.33) as having been used for
the purpose of disclosure (3.16) of consumed energy, and to prevent it from subsequently being:
— transferred to another account; or
— marked again in this way
3.10
cancellation statement
electronic, non-transferrable receipt which provides evidence of the cancellation of one or more GOs
(3.33) for the purpose of disclosure (3.16) of the attributes (3.7) of those GOs (3.33) for the beneficiary or
beneficiaries of the cancellation
3.11
cogeneration
simultaneous generation of thermal energy and electrical and/or mechanical energy in a single process
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3.12
competent body
body duly authorised under the laws and regulations of any state (and, as the case may be, region) to
exercise or discharge any legislative, governmental, regulatory, administrative or supervisory function
associated with the administration of a domain GO scheme (3.20)
3.13
competent body's agent
agent
person or organisation engaged by a competent body (3.12) to perform on its behalf any of its functions
associated with the administration of a domain GO scheme (3.20)
3.14
consumption declaration
declaration with respect to the inputs (3.37) of a production device (3.50), including energy used in storing
energy to be used by that production device (3.50)
3.15
conversion issuance
issuance of a GO (3.33) for output (3.46) resulted from energy carrier conversion (3.23), and for which GOs
(3.33) representing the attributes (3.7) of the input (3.37) to that production device (3.50) have been
cancelled
3.16
disclosure
provision of information to a final customer on the share or quantity of the energy supplied to them as
having specific attributes (3.7)
3.17
disclosure authority
competent body (3.12) charged with supervision of origin disclosure in its domain (3.19), comprising tasks
like e.g.:
— verifying the accuracy and veracity of disclosure statements (3.18); and
— applying corrective measures with regard to disclosure statements (3.18) that do not conform to the
requirements of the relevant domain GO scheme (3.20), and
— calculating the residual mix (3.61) and possibly other fuel mixes, where applicable
3.18
disclosure statement
information provided as a result of disclosure (3.16)
3.19
domain
geographic area containing production devices (3.50) with respect to which an issuing body (3.39) is
responsible for issuing GOs (3.33) for the relevant energy carrier (3.22)
3.20
domain GO scheme
GO scheme
legislative, regulatory, administrative, supervisory, and contractual framework, in relation to any domain
(3.19), establishing a system for issuing, registration, and cancellation of GOs (3.33) and for disclosure
(3.16) in that domain (3.19)
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3.21
domain GO scheme participant
GO scheme participant
registrant (3.53) and/or an account holder (3.2)
3.22
energy carrier
substance or phenomenon that can be used to produce mechanical work or heat or to operate chemical
or physical processes and the means by which it is conveyed
3.23
energy carrier conversion
conversion
production of an energy carrier (3.22) in a production device (3.50) from one or more inputs (3.37)
including at least one other energy carrier (3.22)
3.24
energy efficiency directive
EED
directive 2012/27/EU of the European Parliament and of the Council of 25 October 2012 on energy
efficiency, amending Directives 2009/125/EC and 2010/30/EU and repealing Directives 2004/8/EC and
2006/32/EC
3.25
energy input factor
proportion (relating to the energy content and expressed as a factor of not more than one) of the output
(3.46) of a production device (3.50) which is from a single type of input (3.37)
3.26
energy storage
storage
device or system that is used to store energy, where the energy carrier (3.22) injected into that device or
system is the same as the energy carrier (3.22) that flows out of it
Note 1 to entry: For the purpose of this standard, energy carrier conversion is not to be understood as energy
storage.
3.27
expiry
cessation of a GO (3.33) being eligible for transfer or cancellation, as a consequence of the passage of a
given period of time since the production of the associated energy, in accordance with subclause 4.9.4
3.28
fuel index
minimum mole fraction of a certain compound in a gas mix
Note 1 to entry: Th
...
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