IEC 63341-2-2025 PDF

Full title and description

St IEC 63341-2-2025 — Photovoltaic (PV) systems — Plant-level operational data models and interfaces — Part 2: Interface specification for monitoring and control (provisional national adoption)

Abstract

This standard specifies interface models, data objects and communication requirements for monitoring and control of photovoltaic power plants at the plant level. It defines a common information model and message semantics to support exchange of operational data between PV plant controllers, SCADA systems, asset managers and external stakeholders. The document focuses on data representation, mapping to communication profiles and required services to enable interoperable telemetry, event reporting, control commands and performance analytics for utility-scale and distributed PV installations.

General information

• Status: Published draft / provisional national adoption
• Publication date: 2025
• Publisher: National Standards Body adopting IEC standards (based on IEC)
• ICS / categories: 29.120 (Electrical instruments & energy measurement); 27.140.01 (Photovoltaic power plants)
• Edition / version: 1.0 (2025)
• Number of pages: Approximately 40–80 pages (typical for part‑type IEC interface specifications)

Scope

This part of IEC 63341 defines the interface specification for monitoring and control at the PV plant level. It covers the data models, object dictionaries, semantic definitions and required services to exchange operational data (measurements, statuses, alarms, events, and control commands) between plant supervisory systems and external systems such as distribution system operators, energy management systems and market participants. The standard addresses both real‑time and historical data, message formats, time stamping and quality indicators, and recommends transport and security considerations to achieve interoperable implementations.

Key topics and requirements

• Common information model for PV plant operational data including measurements, topology, device status and performance metrics
• Definitions of data objects and attributes for monitoring, alarms, events and control commands
• Message semantics, time stamping, data quality flags and units of measure
• Interface services for polling, subscription/notification (push), command execution and acknowledgement
• Mapping guidance to common communication profiles and protocols (e.g., IEC protocols, web services, MQTT, OPC UA) for interoperability
• Security and authentication recommendations for data exchange and control commands
• Requirements for logging, historical data access and performance reporting
• Conformance and implementation guidance including test cases and example data models

Typical use and users

The standard is used by system integrators, PV plant designers, SCADA and EMS vendors, inverter and plant controller manufacturers, asset managers, distribution system operators and utilities. It is intended for engineers and developers implementing monitoring and control interfaces, for procurement teams specifying interoperable communications, and for testing and certification bodies validating compliance.

Related standards

IEC 63341-1 (overall framework and terminology), IEC 61850 (communication networks and systems in substations, adapted models and services), IEC 61970/61968 (CIM), IEC 62351 (security for power system management), relevant IEEE and IEC standards for PV systems and smart grid interfaces, and national grid connection codes and telemetry requirements.

Keywords

PV plant, photovoltaic, monitoring, control, interface specification, information model, SCADA, telemetry, IEC 63341, interoperability, data objects, alarms, events, OPC UA, MQTT, cyber security

FAQ

Q: What is this standard?

A: St IEC 63341-2-2025 is a national adoption of IEC 63341‑2, defining interface specifications for monitoring and control of photovoltaic power plants, including data models, message semantics and services to enable interoperable data exchange.

Q: What does it cover?

A: It covers plant‑level operational data models, data object definitions, time stamping and quality, message and service requirements (polling, subscription, commands), mapping guidance to communication profiles, security considerations and conformance guidance for PV monitoring and control interfaces.

Q: Who typically uses it?

A: Manufacturers of inverters and plant controllers, SCADA/EMS vendors, system integrators, asset managers, utilities and distribution system operators, and testing/certification bodies involved in PV plant communications and interoperability.

Q: Is it current or superseded?

A: The designation indicates a 2025 edition. Confirm with the national standards body for the current status; it is presented here as a 2025 publication and should be checked against official catalogues to determine if it is current or later superseded.

Q: Is it part of a series?

A: Yes. IEC 63341 is a multipart series addressing PV plant data models and interfaces. Part 1 provides framework and terminology, Part 2 specifies the interface for monitoring and control, and other parts address additional aspects such as data exchange, testing or use cases.

Q: What are the key keywords?

A: Photovoltaic, PV plant, monitoring, control, information model, interface, interoperability, SCADA, telemetry, data objects, alarms, events.