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Our story

Based on the International Electrotechnical Commission (IEC) 62056 DLMS/COSEM suite of international standards, IDIS Companion Specifications define precise Use Cases and Options to ensure 100% interoperable smart meter devices. The Companions Specification is supported by an independent, proven, and test-driven conformance and interoperability process through certification provided by the IDIS Association. In an effort to strengthen interoperability and open standards, the IDIS Association merged with the DLMS User Association in November 2021.
DLMS will build out the DLMS certification program by integrating the proven IDIS methodology and approach and ramp-up new initiatives to support multi-utility heat, water and gas smart metering companion profiles with a supporting interoperability and compatibility testing service. DLMS will continue to support the IDIS legacy with unchanged services. 

Find out more about the DLMS UA here

The IDIS Standard

 constantly evolving to meet changing requirements

Since its inception, the IDIS companion specification has evolved through 3 baseline ‘packages’ that enables  a core set of key use cases to operate across various underlying communications technologies. 

Package 1

was focused on optimized use cases for narrow-band power line communication networks. 

Package 2

introduced Internet Protocol (IP) as the underlying communication 


Package 3

Extends functional and non-functional use case, keeping track with market demands 

Compliance Testing and Use Cases

Guaranteed flexibility

The IDIS Association offers a product compliance testing process via an independent facility.  Devices are tested via a well-respected third party, with 40 certified devices currently holding the IDIS test label. The IDIS conformance test gives utilities the confidence that multiple vendors are qualified for the relevant baseline IDIS specification. 

Conformance test reports clearly identify the type and manufacturer of the device; the extensions, and the additional options supported by the device.

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