SIST EN IEC 63402-2-2:2026
(Main)Energy efficiency - Customer energy management system - Part 2-2: Data model and messaging - Interface between the customer energy manager and resource managers (IEC 63402-2-2:2026)
- Abstract
This document specifies the fundamental aspects of semantic interoperability for the S2 interface and the related data exchange between a CEM and the resource managers within the premises. It provides a technology independent set of data models and interaction patterns in order to enable applications for energy management within the premises. This document does not include:
– mappings to concrete data representations (XML, JSON and similar);
– mappings to application protocols for the message passing;
– security related aspects.
This group EE publication is primarily intended to be used as an EE standard for the products mentioned in the scope, but is also intended to be used by TCs in the preparation of publications for products which are included in the boundary mentioned in the scope of this document.
- Status
- Published
- Public Enquiry End Date
- 29-Apr-2025
- Publication Date
- 08-Nov-2026
- Technical Committee
- ELI - Electrical and communication installations
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 03-Nov-2026
- Due Date
- 08-Jan-2027
- Completion Date
- 09-Nov-2026
SIST EN IEC 63402-2-2:2026 is a SIST standard based on IEC 63402-2-2 for customer energy management systems. It specifies the technology-independent data models and messaging patterns for semantic interoperability at the S2 interface between a Customer Energy Manager (CEM) and resource managers within premises, for energy management applications in homes and buildings.
What does SIST EN IEC 63402-2-2:2026 specify?
SIST EN IEC 63402-2-2:2026 specifies the fundamental aspects of semantic interoperability for the S2 interface and the related data exchange between a CEM and resource managers inside the premises. It gives a technology-independent model so different devices and controllers can exchange energy-management information in a consistent way.
The document also states what it leaves out:
- mappings to concrete data representations such as XML and JSON
- mappings to application protocols for message passing
- security-related aspects
The document is organized into these main parts:
- Clause 1 Scope
- Clause 2 Normative references
- Clause 3 Terms, definitions and abbreviations
- Clause 4 Energy management
- Clause 5 Resource Manager
- Clause 6 Customer Energy Manager (CEM)
- Clause 7 Energy Management Concepts
- Clause 8 Energy Management Data Models
- Clause 9 Communication
- Annex A Use cases
| Annex | What it covers |
|---|---|
| Annex A | Use cases for organizing, scheduling, management, and case studies for energy management in premises |
What are the key requirements of SIST EN IEC 63402-2-2:2026?
SIST EN IEC 63402-2-2:2026 separates energy-management responsibilities between the CEM and the resource manager, and it uses the S2 interface to exchange capabilities, constraints, forecasts, measurements, and instructions. In practice, this means implementers need to model flexibility in a common way before they map it to a concrete protocol.
Interface roles and responsibility split
Clause 5 defines the Resource Manager as a software component with gateway function and embedded intelligence. It represents a single energy flexibility and connects the CEM to a HBES / BACS / SASS or (Smart) device, while the way it talks to the device itself is out of scope. For an implementer, this means the Resource Manager must translate device-specific behavior into information the CEM can use.
Clause 6 defines the CEM as the software component responsible for energy management within the premises. It may support local optimization, implicit control, or explicit control, depending on the optimization target. In practice, a system designer must decide whether the CEM is reacting only to local conditions, responding to tariffs, or receiving direct control instructions.
Energy-management concepts and abnormal conditions
Clause 7.3 introduces the abnormal condition concept. A CEM can request behavior that sacrifices user comfort only in extreme situations, and the Resource Manager still has to preserve safe operation and avoid excessive wear. This matters when a system must balance grid needs against comfort, for example during a serious supply issue.
Clause 7.4 limits power measurements to supported commodities and to power exchanged between the device and the local grid. Clause 7.5 describes power forecasts as ordered elements with duration, expected power value, and optional statistical certainty. For a project team, this means the CEM receives planning data that is useful for scheduling, but not arbitrary internal device telemetry.
Control types the interface supports
Clause 7.6 defines five control types. Each one gives a different way to represent and steer flexibility:
- Power Envelope Based Control (PEBC) - the CEM limits power within defined bounds
- Power Profile Based Control (PPBC) - the CEM works with profile changes, sequence shifting, and sequence selection
- Operation Mode Based Control (OMBC) - the CEM chooses among operation modes offered by the Resource Manager
- Fill Rate Based Control (FRBC) - the CEM coordinates based on fill level and fill rate
- Demand Driven Based Control (DDBC) - the CEM decides how a demand should be fulfilled
This classification matters because a device vendor must choose the control model that matches the device behavior, and a CEM must support the corresponding interaction pattern.
Data model structure
Clause 8 defines the data structures used by the S2 interface. It covers basic data types, Resource Manager details, power forecasts, the control-type models, and enumerations such as role, commodity, currency, instruction status, control type, and forecast type. In practice, Clause 8 is the core schema layer for implementation, integration, and message definition.
The data model also includes specific structures for the control types, such as constraints, envelopes, profiles, system descriptions, timers, actuator status, storage status, leakage behaviour, usage forecasts, and target profiles. That means the document is not just conceptual - it gives the object model needed to exchange operating information.
Communication tasks and behavior
Clause 9 turns the data model into communication tasks. It includes generic tasks such as updating Resource Manager details, activating a control type, communicating a power measurement, updating a power forecast, and revoking a forecast. For implementers, these tasks define the sequence and meaning of the exchanged data.
Clause 9 also defines task groups for each control type, including update, revoke, process instruction, and status-related tasks. The clause is technology independent, so a protocol implementer must map these tasks to the chosen communication stack while keeping the same meaning and order.
Clause 9 assumes a session already exists between the CEM and the Resource Manager, that compatible protocol versions are in use, that reception status can be reported, and that large data structures can be chunked if needed. That makes the document suitable as a message-model specification, not as a session-setup or transport specification.
What terms does SIST EN IEC 63402-2-2:2026 define?
- Customer Energy Manager (CEM) - the software component that manages energy within the premises and coordinates resource managers to achieve an optimization target.
- resource manager - the software component that represents one energy flexibility and mediates between the CEM and a device.
- S2 communication - the interface between the CEM and the resource manager.
- abnormal condition - a situation in which a Resource Manager may sacrifice user comfort when requested by the CEM.
- power forecast - an ordered description of expected future power behavior for a commodity-quantity, including duration and expected power.
- prosumer - a household or device that both produces and consumes energy of the same commodity.
- smart grid operator - the instance that requests energy profiles from the CEM to help keep the grid stable and reliable.
- time slot - a fixed period of time with a specific duration.
Who uses SIST EN IEC 63402-2-2:2026?
SIST EN IEC 63402-2-2:2026 is intended for products in the energy-efficiency and smart-grid space, and for technical committees preparing publications for products within its scope. It is relevant where a CEM must coordinate with devices through a resource manager rather than through device-specific logic only.
Typical users include:
- manufacturers of home and building energy devices
- developers of Customer Energy Management systems
- integrators of HBES / BACS / SASS and smart-grid solutions
- teams working on EV charging, storage, heating, solar generation, and load control
- IEC technical committees and standards developers working on related product standards
In practice, these users apply the standard when defining device capabilities, designing S2 data exchange, and specifying how a CEM and a resource manager should cooperate.
Which standards are used with SIST EN IEC 63402-2-2:2026?
- ISO 4217 - provides currency codes used by the data model.
- EN 61850-7-2:2003 - provides the Abstract Communication Service Interface (ACSI) reference used for communication concepts.
- IEC/TR 62746-2 - provides use cases and requirements for the interface between a customer energy management system and a power management system.
- ISO 15118-20 - provides the road-vehicle to grid communication interface used in the EV-related use cases.
- IEC 63402-1 - provides the shared terminology and system architecture referenced in Clause 3 and used as the basis for several definitions.
What does the SIST EN IEC 63402-2-2:2026 document contain?
The document contains a conceptual architecture for premises-side smart-grid energy management, including the relationship between the CEM, the Energy Management Gateway (EMG), and resource managers. It also includes figures that illustrate flexibility, power constraints, and example Resource Manager/device combinations.
Clause 7 contains the conceptual explanation of control types and includes a formula for mapping a control factor to a power value in operation mode control. Clause 8 contains the full data-model structure, including the object types and enumerations needed for implementation. Clause 9 contains the task-oriented communication model with preconditions for each exchange.
Annex A contains use cases grouped into organizing, scheduling, and management, plus case studies. Those use cases are used to explain the message flow and the data model behind scenarios such as configuration, tariff-aware scheduling, storage priority, conflicting EV charging, and grid-requested temporary energy saving.
Relations
- Effective Date
- 22-Sep-2026
- Effective Date
- 22-Sep-2026
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Frequently Asked Questions
SIST EN IEC 63402-2-2:2026 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Energy efficiency - Customer energy management system - Part 2-2: Data model and messaging - Interface between the customer energy manager and resource managers (IEC 63402-2-2:2026)". This standard covers: This document specifies the fundamental aspects of semantic interoperability for the S2 interface and the related data exchange between a CEM and the resource managers within the premises. It provides a technology independent set of data models and interaction patterns in order to enable applications for energy management within the premises. This document does not include: – mappings to concrete data representations (XML, JSON and similar); – mappings to application protocols for the message passing; – security related aspects. This group EE publication is primarily intended to be used as an EE standard for the products mentioned in the scope, but is also intended to be used by TCs in the preparation of publications for products which are included in the boundary mentioned in the scope of this document.
This document specifies the fundamental aspects of semantic interoperability for the S2 interface and the related data exchange between a CEM and the resource managers within the premises. It provides a technology independent set of data models and interaction patterns in order to enable applications for energy management within the premises. This document does not include: – mappings to concrete data representations (XML, JSON and similar); – mappings to application protocols for the message passing; – security related aspects. This group EE publication is primarily intended to be used as an EE standard for the products mentioned in the scope, but is also intended to be used by TCs in the preparation of publications for products which are included in the boundary mentioned in the scope of this document.
SIST EN IEC 63402-2-2:2026 is classified under the following ICS (International Classification for Standards) categories: 03.100.70 - Management systems; 27.015 - Energy efficiency. Energy conservation in general; 29.020 - Electrical engineering in general; 35.240.67 - IT applications in building and construction industry; 97.120 - Automatic controls for household use. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN IEC 63402-2-2:2026 has the following relationships with other standards: It is inter standard links to SIST EN IEC 63402-1:2025, SIST EN ISO 15118-20:2022. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN IEC 63402-2-2:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2026
Energijska učinkovitost - Sistemi za upravljanje energije odjemalcev - 2-2. del:
Podatkovni model in izmenjava podatkov - Vmesnik med upraviteljem energije
odjemalcev in stavbnih virov (IEC 63402-2-2:2026)
Energy efficiency - Customer energy management system - Part 2-2: Data model and
messaging - Interface between the customer energy manager and resource managers
(IEC 63402-2-2:2026)
Energie-Effizienz-Systeme - Smart grid - Kundenenergiemanager-Systeme -
Schnittstelle zwischen dem Heim-/Gebäude CEM und den Ressourcenmanagern -
Datenmodell und Informationsaustausch (IEC 63402-2-2:2026)
Systèmes pour l'efficacité énergétique - Systèmes de gestion d'énergie client - Part 2-2:
Modèle de données et messagerie - Interface entre le gestionnaire d'énergie client et les
gestionnaires de ressources pour foyers domestiques/bâtiments (IEC 63402-2-2:2026)
Ta slovenski standard je istoveten z: EN IEC 63402-2-2:2026
ICS:
27.015 Energijska učinkovitost. Energy efficiency. Energy
Ohranjanje energije na conservation in general
splošno
35.240.67 Uporabniške rešitve IT v IT applications in building
gradbeništvu and construction industry
97.120 Avtomatske krmilne naprave Automatic controls for
za dom household use
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 63402-2-2
NORME EUROPÉENNE
EUROPÄISCHE NORM October 2026
ICS 03.100.70; 27.015; 29.020
English Version
Energy efficiency - Customer energy management system - Part
2-2: Data model and messaging - Interface between the
customer energy manager and resource managers
(IEC 63402-2-2:2026)
Systèmes pour l'efficacité énergétique - Systèmes de Energie-Effizienz-Systeme - Smart grid -
gestion d'énergie client - Part 2-2: Modèle de données et Kundenenergiemanager-Systeme - Schnittstelle zwischen
messagerie - Interface entre le gestionnaire d'énergie client dem Heim-/Gebäude CEM und den Ressourcenmanagern -
et les gestionnaires de ressources pour foyers Datenmodell und Informationsaustausch
domestiques/bâtiments (IEC 63402-2-2:2026)
(IEC 63402-2-2:2026)
This European Standard was approved by CENELEC on 2026-09-29. 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.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 63402-2-2:2026 E
European foreword
The text of document 23K/134/FDIS, future edition 1 of IEC 63402-2-2, prepared by SC 23K “Electrical
Energy Efficiency products” of IEC/TC 23 “Electrical accessories” was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN IEC 63402-2-2:2026.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2027-10-31
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2029-10-31
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 63402-2-2:2026 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 63402-1:2025 NOTE Approved as EN IEC 63402-1:2025 (not modified)
IEC 63402-1 NOTE Approved as EN IEC 63402-1
IEC 63402 (series) NOTE Approved as EN IEC 63402 (series)
ISO 15118 (series) NOTE Approved as EN ISO 15118 (series)
ISO 15118-20 NOTE Approved as EN ISO 15118-20
ISO 15118-2:2014 NOTE Approved as EN ISO 15118-2:2016 (not modified)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cencenelec.eu.
Publication Year Title EN/HD Year
IEC/TR 62746-2 2015 Systems interface between customer - -
energy management system and the
power management system - Part 2: Use
cases and requirements
IEC 63402-1 - Energy Efficiency - Customer Energy EN IEC 63402-1 -
Management Systems - Part 1: General
Requirements and Architecture
ISO 4217 - Codes for the representation of currencies - -
ISO 15118-20 - Road vehicles - Vehicle to grid EN ISO 15118-20 -
communication interface - Part 20: 2nd
generation network layer and application
layer requirements
IEC 63402-2-2 ®
Edition 1.0 2026-08
INTERNATIONAL
STANDARD
HORIZONTAL PUBLICATION
GROUP ENERGY EFFICIENCY PUBLICATION
Energy efficiency - Customer energy management system -
Part 2-2: Data model and messaging - Interface between the customer energy
manager and resource managers
ICS 03.100.70; 27.015; 29.020 ISBN 978-2-8327-1442-3
IEC 63402-2-2:2026-08(en)
IEC 63402-2-2:2026 © IEC 2026
CONTENTS
FOREWORD . 8
Introduction. 10
1 Scope . 11
2 Normative references . 11
3 Terms, definitions and abbreviated terms . 11
3.1 Terms and definitions. 11
3.2 Abbreviated terms . 14
4 Energy management . 14
4.1 Architectural overview . 14
4.2 Description . 15
4.3 Energy management roles . 16
4.3.1 General . 16
4.3.2 Energy producer role . 17
4.3.3 Energy consumer role . 17
4.3.4 Energy storage role . 18
5 Resource manager . 19
6 Customer energy manager (CEM). 20
6.1 General . 20
6.2 Local optimization . 20
6.3 Implicit control . 21
6.4 Explicit control . 21
6.5 Summary . 22
7 Energy management concepts . 22
7.1 General . 22
7.2 Design philosophy . 22
7.3 Abnormal condition . 23
7.4 Power measurements . 23
7.5 Power forecasts . 23
7.6 Control types . 24
7.6.1 General . 24
7.6.2 Power envelope based control . 24
7.6.3 Power profile based control . 29
7.6.4 Operation mode based control . 30
7.6.5 Fill rate based control . 33
7.6.6 Demand driven based control . 35
8 Energy management data models . 37
8.1 Basic data types . 37
8.1.1 General . 37
8.1.2 Common concepts related to time . 37
8.1.3 Common concepts related to identifiers . 38
8.1.4 Common concepts related to strings . 38
8.1.5 Meaning of optionality . 38
8.2 Resource manager . 39
8.2.1 ResourceManagerDetails . 39
8.2.2 PowerValue . 39
8.2.3 PowerForecastValue. 40
IEC 63402-2-2:2026 © IEC 2026
8.2.4 PowerRange . 40
8.2.5 NumberRange . 40
8.2.6 PowerMeasurement . 41
8.2.7 Role . 41
8.2.8 ReceptionStatus . 41
8.2.9 Transition . 41
8.2.10 Timer . 42
8.2.11 InstructionStatusUpdate . 42
8.3 Power forecast . 42
8.3.1 Description . 42
8.3.2 PowerForecast . 43
8.3.3 PowerForecastElement . 44
8.4 Control types . 44
8.4.1 Power envelope based control . 44
8.4.2 Power profile based control . 47
8.4.3 Operation mode based control . 50
8.4.4 Fill rate based control . 52
8.4.5 Demand driven based control . 57
8.5 Enumerations . 60
8.5.1 RoleType . 60
8.5.2 Commodity . 60
8.5.3 CommodityQuantity . 61
8.5.4 Currency . 61
8.5.5 InstructionStatus . 62
8.5.6 ControlType . 63
8.5.7 PowerForecastType . 63
8.5.8 PEBC.PowerEnvelopeLimitType . 64
8.5.9 PEBC.PowerEnvelopeConsequenceType . 64
8.5.10 ReceptionStatusValues . 64
8.5.11 PPBC.PowerSequenceStatus . 64
9 Communication . 65
9.1 General . 65
9.2 Generic tasks . 66
9.2.1 Update resource manager details . 66
9.2.2 Activate control type . 66
9.2.3 Update active control type . 67
9.2.4 Communicate power measurement . 67
9.2.5 Update power forecast . 67
9.2.6 Revoke power forecast . 68
9.3 Power envelope based control tasks . 68
9.3.1 Update power constraints . 68
9.3.2 Revoke power constraints . 69
9.3.3 Update power plan. 69
9.3.4 Update energy constraints . 70
9.3.5 Revoke energy constraints . 70
9.3.6 Process instruction . 71
9.3.7 Revoke instruction . 72
9.4 Power profile based control tasks . 72
9.4.1 Update power profile definition . 72
IEC 63402-2-2:2026 © IEC 2026
9.4.2 Revoke power profile definition . 73
9.4.3 Update power profile status . 73
9.4.4 Process schedule instruction . 73
9.4.5 Revoke schedule instruction . 74
9.4.6 Process start interruption instruction . 75
9.4.7 Revoke start interruption instruction . 75
9.4.8 Process end interruption instruction . 76
9.4.9 Revoke end interruption instruction . 76
9.5 Operation mode based control tasks . 77
9.5.1 Update system description . 77
9.5.2 Revoke system description . 77
9.5.3 Update status . 78
9.5.4 Update timer status . 78
9.5.5 Process instruction . 79
9.5.6 Revoke instruction . 79
9.6 Fill rate based control tasks . 80
9.6.1 Update system description . 80
9.6.2 Revoke system description . 80
9.6.3 Update actuator status. 81
9.6.4 Update storage status . 81
9.6.5 Update timer status . 81
9.6.6 Update leakage behaviour . 82
9.6.7 Revoke leakage behaviour . 82
9.6.8 Update usage forecast . 83
9.6.9 Revoke usage forecast . 83
9.6.10 Update fill level target profile . 84
9.6.11 Revoke fill level target profile. 84
9.6.12 Process instruction . 85
9.6.13 Revoke instruction . 85
9.7 Demand driven based control tasks . 86
9.7.1 Update system description . 86
9.7.2 Revoke system description . 86
9.7.3 Update actuator status. 87
9.7.4 Update timer status . 87
9.7.5 Update average demand rate forecast . 87
9.7.6 Revoke average demand rate forecast . 88
9.7.7 Process instruction . 88
9.7.8 Revoke instruction . 89
Annex A (informative) Use cases . 90
A.1 Overview . 90
A.2 Organizing . 91
A.2.1 UC_EM_O100: Configuring CEM in network . 91
A.2.2 UC_EM_O101: Configuring master CEM with smart grid operator
credentials . 91
A.3 Scheduling . 92
A.4 Management . 92
A.4.1 UC_EM_M300: CEM selects alternative energy sequences by energy
costs . 92
A.4.2 UC_EM_M301 CEM modifies start time of energy sequence . 93
IEC 63402-2-2:2026 © IEC 2026
A.4.3 UC_EM_M302: CEM changes an energy profile to make temporary use
of stored energy . 93
A.4.4 UC_EM_M303: Demanded power cannot be delivered by domestic grid . 94
A.4.5 UC_EM_M304: Two electric vehicles conflicting in their power load . 94
A.4.6 UC_EM_M305: EMG requests temporarily energy saving . 95
A.4.7 UC_EM_M306: Energy storage requests high priority . 96
A.5 Case studies . 97
A.5.1 UC_EM_M307 Charging an EV in the context of Power Limitation PV
with the dynamic control mode of ISO 15118-20 . 97
A.5.2 UC_EM_M308: Charging an EV in the context of Power Limitation PV
with the scheduled control mode of ISO 15118 (series) [10] and
monetary incentives . 98
Bibliography . 100
Figure 1 – Architectural overview of Premises smart grid system . 15
Figure 2 – Example of how different power profiles can achieve the same target state . 16
Figure 3 – Example resource manager and HBES or BACS or smart appliance or
device combinations, or any combinations of these . 19
Figure 4 – Example of a PEBC.Instruction from the CEM containing a PowerEnvelope . 25
Figure 5 – Example of how a PowerEnvelope and a PowerForecast of type GENUINE
result in a PowerForecast of type CEM_INFLUENCED . 26
Figure 6 – Power constrain examples . 26
Figure 7 – Example of the PowerConstraints based on Figure 6 b) . 27
Figure 8 – Example which illustrates the effect of the minimal power envelope element
duration . 28
Figure 9 – Example of a power profile definition . 29
Figure 10 – Example system description for the operation mode based control type . 31
Figure 11 – Visual example of how the factor maps to power values . 32
Figure 12 – Example for fill rate based control . 33
Figure 13 – Example of the actuator details of fill rate based control . 34
Figure 14 – Example of an operation mode for fill rate based control . 35
Figure 15 – Schematic overview of the data the resource manager send to the CEM . 36
Figure 16 – Example of the operation modes in Demand Driven Based Control . 37
Figure 17 – PowerForecast . 43
Figure 18 – PowerForecastElement . 44
Figure 19 – State diagram for instruction status . 63
Figure 20 – Interaction pattern for 'update resource manager details' task . 66
Figure 21 – Interaction pattern for 'activate control type' task . 66
Figure 22 – Interaction pattern for the 'update active control type' task . 67
Figure 23 – Interaction pattern for the 'communicate power measurement' task . 67
Figure 24 – Interaction pattern for the 'update power forecast' task. 68
Figure 25 – Interaction pattern for the 'revoke power forecast' task . 68
Figure 26 – Interaction pattern for the 'update power constraints' task . 69
Figure 27 – Interaction pattern for the 'revoke power constraints' task . 69
Figure 28 – Interaction pattern for the 'update energy constraints' task . 70
Figure 29 – Interaction pattern for the 'revoke energy constraints' task . 71
IEC 63402-2-2:2026 © IEC 2026
Figure 30 – Interaction pattern for 'process instruction' task . 71
Figure 31 – Interaction pattern for the 'revoke instruction' task. 72
Figure 32 – Interaction pattern for the 'update power profile definition' task . 72
Figure 33 – Interaction pattern for the 'revoke power profile definition' task . 73
Figure 34 – Interaction pattern for 'update power profile status' task . 73
Figure 35 – Interaction pattern for 'process schedule instruction' task . 74
Figure 36 – Interaction pattern for the 'revoke schedule instruction' task . 74
Figure 37 – Interaction pattern for 'process start interruption instruction' task . 75
Figure 38 – Interaction pattern for the 'revoke start interruption instruction' task . 75
Figure 39 – Interaction pattern for 'process end interruption instruction' task . 76
Figure 40 – Interaction pattern for the 'revoke end interruption instruction' task . 76
Figure 41 – Interaction pattern for the 'update system description' task. 77
Figure 42 – Interaction pattern for the 'revoke system description' task . 78
Figure 43 – Interaction pattern for 'update status' task . 78
Figure 44 – Interaction pattern for 'update timer status' task . 78
Figure 45 – Interaction pattern for the 'process instruction' task . 79
Figure 46 – Interaction pattern for the 'revoke instruction' task. 79
Figure 47 – Interaction pattern for the 'update system description' task. 80
Figure 48 – Interaction pattern for the 'revoke system description' task . 80
Figure 49 – Interaction pattern for 'update actuator status' task . 81
Figure 50 – Interaction pattern for 'update storage status' task . 81
Figure 51 – Interaction pattern for 'update timer status' task . 82
Figure 52 – Interaction pattern for the 'update leakage behaviour' task . 82
Figure 53 – Interaction pattern for the 'revoke leakage behaviour' task . 82
Figure 54 – Interaction pattern for the 'update usage forecast' task. 83
Figure 55 – Interaction pattern for the 'revoke usage forecast' task . 83
Figure 56 – Interaction pattern for the 'update fill level target profile' task . 84
Figure 57 – Interaction pattern for the 'revoke fill level target profile' task . 84
Figure 58 – Interaction pattern for 'process instruction' task . 85
Figure 59 – Interaction pattern for the 'revoke instruction' task. 85
Figure 60 – Interaction pattern for the 'update demand driven system description' task . 86
Figure 61 – Interaction pattern for the 'revoke demand driven system description' task . 86
Figure 62 – Interaction pattern for 'update actuator status' task . 87
Figure 63 – Interaction pattern for 'update timer status' task . 87
Figure 64 – Interaction pattern for the 'update average demand rate forecast' task . 88
Figure 65 – Interaction pattern for the 'revoke average demand rate forecast' task . 88
Figure 66 – Interaction pattern for 'process instruction' task . 89
Figure 67 – Interaction pattern for the 'revoke instruction' task. 89
Figure A.1 – Solving conflicting power load . 95
Figure A.2 – Charging an EV . 97
Figure A.3 – Charging an EV . 98
Table 1 – Data types . 37
IEC 63402-2-2:2026 © IEC 2026
Table 2 – ResourceManagerDetails . 39
Table 3 – PowerValue . 40
Table 4 – PowerForecastValue . 40
Table 5 – PowerRange . 40
Table 6 – NumberRange . 41
Table 7 – PowerMeasurement. 41
Table 8 – Role . 41
Table 9 – ReceptionStatus . 41
Table 10 – Transition . 41
Table 11 – Timer. 42
Table 12 – InstructionStatusUpdate . 42
Table 13 – PowerForecast . 43
Table 14 – PowerForecastElement . 44
Table 15 – PEBC.PowerConstraints . 44
Table 16 – PEBC.AllowedLimitRange . 45
Table 17 – PEBC.EnergyConstraint . 45
Table 18 – PEBC.PowerEnvelope . 46
Table 19 – PEBC.PowerEnvelopeElement . 46
Table 20 – PEBC.Instruction . 46
Table 21 – PPBC.PowerProfileDefinition . 47
Table 22 – PPBC.PowerSequenceContainer . 47
Table 23 – PPBC.PowerSequence . 48
Table 24 – PPBC.PowerSequenceElement . 48
Table 25 – PPBC.PowerProfileStatus. 48
Table 26 – PPBC.PowerSequenceContainerStatus . 48
Table 27 – PPBC.ScheduleInstruction . 49
Table 28 – PPBC.StartInterruptionInstruction . 49
Table 29 – PPBC.EndInterruptionInstruction . 50
Table 30 – OMBC.SystemDescription . 50
Table 31 – OMBC.Status . 50
Table 32 – OMBC.TimerStatus. 51
Table 33 – OMBC.OperationMode . 51
Table 34 – OMBC.Instruction . 52
Table 35 – FRBC.SystemDescription . 52
Table 36 – FRBC.ActuatorDescription . 52
Table 37 – FRBC.ActuatorStatus . 53
Table 38 – FRBC.TimerStatus . 53
Table 39 – FRBC.OperationMode . 53
Table 40 – FRBC.OperationModeElement . 54
Table 41 – FRBC.StorageDescription. 54
Table 42 – FRBC.StorageStatus . 55
Table 43 – FRBC.LeakageBehaviour . 55
Table 44 – FRBC.LeakageBehaviourElement . 55
IEC 63402-2-2:2026 © IEC 2026
Table 45 – FRBC.Instruction . 55
Table 46 – FRBC.UsageForecast . 56
Table 47 – FRBC.UsageForecastElement . 56
Table 48 – FRBC.FillLevelTargetProfile . 57
Table 49 – FRBC.FillLevelTargetProfileElement. 57
Table 50 – DDBC.SystemDescription . 57
Table 51 – DDBC.ActuatorDescription . 58
Table 52 – DDBC.ActuatorStatus . 58
Table 53 – DDBC.TimerStatus . 58
Table 54 – DDBC.OperationMode . 59
Table 55 – DDBC.Instruction. 59
Table 56 – DDBC.AverageDemandRateForecast . 60
Table 57 – DDBC.AverageDemandRateForecastElement . 60
Table 58 – Enumeration of RoleType types . 60
Table 59 – Enumeration of commodity types . 61
Table 60 – Enumeration of CommodityQuantity types . 61
Table 61 – Examples of enumeration of currency types according to ISO 4217 . 61
Table 62 – Enumeration of InstructionStatus types . 62
Table 63 – Enumeration of ControlType types . 63
Table 64 – Enumeration of PowerForecastType types . 63
Table 65 – Enumeration of PowerEnvelopeLimitType types . 64
Table 66 – Enumeration of PowerEnvelopeConsequenceType types . 64
Table 67 – Enumeration of ReceptionStatusValues types . 64
Table 68 – Enumeration of PPBC.PowerSequenceStatus types . 64
Table A.1 – Use cases mainly describe energy management . 90
Table A.2 – Use cases overview . 90
IEC 63402-2-2:2026 © IEC 2026
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Energy efficiency - Customer energy management system -
Part 2-2: Data model and messaging - Interface between the customer
energy manager and resource managers
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for
standardization comprising all national electrotechnical committees (IEC National Committees).
The object of IEC is to promote international co-operation on all questions concerning
standardization in the electrical and electronic fields. To this end and in addition to other
activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC
Publication(s)"). Their preparation is entrusted to technical committees; any IEC National
Committee interested in the subject dealt with may participate in this preparatory work.
International, governmental and non-governmental organizations liaising with the IEC also
participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two
organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as
possible, an international consensus of opinion on the relevant subjects since each technical
committee has representation from all interested IEC National Committees.
...