The STS Association is pleased to announce the signing of a Liaison Agreement with the DLMS User Association (DLMS UA), marking an important milestone in the continued evolution of interoperable, secure, and future-ready metering systems.

This strategic partnership advances interoperability, strengthens smart prepayment integration, and delivers greater value to the global metering ecosystem by aligning secure data exchange with trusted prepayment systems. The DLMS User Association is a leading voice globally in interoperable and secure data exchange, providing a foundation for innovation and growth to support strategic energy and water management. It’s DLMS/COSEM protocol and data model is widely adopted and supported by major international standardization bodies.

This liaison agreement represents a strategic alignment between two widely adopted and deployed global standards — STS token technology and the DLMS/COSEM data model — with the shared objective of delivering stronger interoperability, enhanced smart prepayment capabilities, and increased value across the metering ecosystem.

Through this collaboration, the STS Association and DLMS UA will work closely to ensure that STS tokens are seamlessly transported using the DLMS/COSEM protocol and data model. The liaison will support the development of the necessary specifications, mappings, and technical enhancements required to integrate STS token functionality within the DLMS Generic Companion Profiles.

Both associations will also coordinate their respective roadmaps to ensure that future developments in token technology and data exchange evolve in a synchronized and complementary manner. In parallel, joint efforts will focus on market education, technical documentation, and awareness initiatives that clearly articulate the benefits of combining STS prepayment with DLMS-based communication frameworks.

While electricity metering remains a core focus, the collaboration will also support the expansion of aligned use cases across electricity, water, gas, and time metering, reinforcing the multi-utility relevance of both standards. By working in close cooperation with DLMS UA, the STS Association aims to further strengthen smart prepayment implementations, support utilities and manufacturers with clear and consistent specifications, and enable secure, flexible solutions that are fit for both current and future smart-metering environments.