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Durable, repairable and upgradeable LED luminaires are key elements contributing to sustainable lighting. Zhaga is developing and standardizing interface specifications to help facilitate a new market framework called "Circularity Lighting".

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With the success of LEDs in general lighting, the time-honored separation of light sources (lamps) and luminaires has been discarded in the designs of LED luminaires.

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The Zhaga General Assembly has decided in November 2020 to transfer the Zhaga Books 18 and 20 to the IEC. Sharing Zhaga specifications with global standard development organizations is included in the Zhaga mission and has the goal of increasing global acceptance of Zhaga specifications.

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Zhaga Book 20 is an essential standard towards achieving smart building infrastructure, which specifies smart, interoperable LED luminaires with easily upgradeable IoT connectivity.


The Vision of the Zhaga Consortium is:

  • On top of their primary lighting task, LED luminaires are becoming increasingly smart and connected to IoT networks
  • The design of a new luminaire is facilitated by the availability of a large supply of interoperable components, based on standardized interfaces, while still encouraging differentiation
  • Zhaga creates specifications for electrical, mechanical, optical, thermal and communication interfaces for interoperable components to be used in LED luminaires
  • These interoperable components allow the upgrading and servicing of LED luminaires, depending on the design choices by the luminaire manufacturer
  • The ability to upgrade LED luminaires after installation is of great benefit to end customers. Their luminaires are future proofed to embrace upcoming innovations in the lighting industry, including the digital innovations beyond lighting
  • The ability to service LED luminaires encourages more resource efficient business models that meet circularity requirements, including legislation and drive market growth
  • The Zhaga logo proves the certification of interoperable components and provides an easy means to identify components that can be upgraded and serviced
  • Zhaga creates new opportunities for the lighting value chain in the innovations beyond lighting


The mission of the Zhaga Consortium is:

  • To create specifications for electrical, mechanical, optical, thermal and communication interfaces for interoperable components to be used in LED luminaires, or fixtures
  • To make components easily identifiable, and third party tested, through a logo licensing program
  • To enable manufacturers to make LED luminaires with Zhaga-compliant components, which are upgradeable and serviceable, depending on the design choices taken by the luminaire manufacturer and the serviceability level of the luminaire
  • To promote the benefits and opportunities of using Zhaga-compliant components for new luminaire use cases to manufacturers, specifiers, installers and professional end users
  • To actively share Zhaga specifications with other global and regional standards development organizations, as well as national lighting organizations, gaining increased global acceptance of the Zhaga specs
  • To maintain design freedom and scope for differentiation, by only restricting those parameters necessary to enable interoperability