openLEADR

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Friendly, compliant implementations of OpenADR 2.0b and 3.1.

Friendly and compliant implementations of OpenADR 2.0b and OpenADR 3.1

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OpenLEADR is an LF Energy project providing free and open source implementations of the Open Automated Demand Response (OpenADR) protocol – an industry standard for enabling energy flexibility across grids, devices, and services.

The project focuses on the development of openleadr-rs, a Rust based implementation of OpenADR 3.1 (referred to as OpenLEADR 3.1). The Python based implementation of OpenADR 2.0b is currently unmaintained.

Project Lifecycle Stage
Incubation

Project Special Interest Group
Edge Interoperability and Flexibility

Why OpenADR?

OpenADR is a widely adopted protocol for automated, standards-based demand response. It enables grid operators and utilities to communicate signals such as pricing, events, and capacity limits to energy-consuming devices and systems in real-time.

OpenADR is used globally to:

  • Reduce grid strain and balance load
  • Enable customer participation in energy markets
  • Integrate flexible, distributed energy resources
  • Support regulatory compliance for demand response programs

What’s New in OpenADR 3.1?

OpenADR 3.1 modernizes the protocol with significant improvements in usability, flexibility, and developer-friendliness:

  • RESTful architecture and JSON messaging make it simpler to implement and integrate
  • Maintains core OpenADR concepts (events, reports, etc.) while streamlining complexity
  • Easier adoption for VENs (Virtual End Nodes) with modular implementation options
  • Greater alignment with Common Information Model (CIM), facilitating broader interoperability

OpenLEADR 3.1, developed in Rust, provides a highly reliable, memory-safe platform for critical infrastructure.

Why Rust?

OpenLEADR 3.1 is built in Rust, a modern language known for safety, performance, and reliability – making it ideal for the high-assurance needs of grid infrastructure.

Benefits include:

  • Memory safety and secure execution
  • Easy deployment as portable, standalone binaries
  • Growing adoption across infrastructure and embedded systems communities

What’s Included in OpenLEADR 3.1?

OpenLEADR 3.1 provides:

  • A robust VTN (Virtual Top Node) and VEN (Virtual End Node) implementation
  • Support for CRUD operations on programs, events, reports, VENs, and resources
  • Authentication and authorization mechanisms
  • High test coverage (166 of 168 tests from the OpenADR Alliance suite pass)
  • Currently excludes support for the webhook mechanism (pending spec update)
  • VTN support for signalling via MQTT and WebSockets
  • VTN support for resource groups (to be standardized in OpenADR 3.2)

Use Cases

OpenADR 3.1, as implemented by OpenLEADR, enables diverse energy flexibility use cases:

  • Grid-Aware EV Charging: Dutch Distribution System Operators (DSOs) will use OpenADR 3.1 to send static and dynamic grid capacity profiles to Charge Point Operators (CPOs)
  • Dynamic Price Signals: Communicate time-sensitive pricing to end-user devices or systems
  • Load Management & DER Integration: Enable smarter orchestration of distributed assets in real time

Governance & Community

OpenLEADR is governed by the LF Energy community under the guidance of its Technical Steering Committee (TSC), with contributors from:

  • Tweede golf
  • ElaadNL

Contributions, discussions, and collaboration take place on Slack, GitHub, and through public TSC meetings.

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