Five harmonized European standards for thermal energy meters have been officially cited in the Official Journal of the European Union (OJEU), following the publication of Commission Implementing Decision (EU) 2025/1939. This milestone marks a significant step forward in supporting the EU’s internal market and regulatory framework for measuring instruments under the Measurement Instruments Directive (MID – Directive 2014/32/EU).
The cited standards are:
- EN 1434-1:2022 – Thermal energy meters – Part 1: General requirements
- EN 1434-2:2022 – Thermal energy meters – Part 2: Constructional requirements
- EN 1434-4:2022 – Thermal energy meters – Part 4: Pattern approval tests
- EN 1434-5:2022 – Thermal energy meters – Part 5: Initial verification tests
- EN 1434-6:2022 – Thermal energy meters – Part 6: Installation, commissioning, operational monitoring and maintenance
These harmonized standards provide a robust technical foundation for manufacturers, notified bodies, regulators, and other stakeholders across Europe. Their citation ensures that instruments conforming to these standards are presumed to meet the essential requirements of the MID, facilitating smoother market access and legal certainty.
A commitment to European standardization
CEN and CENELEC reaffirm their commitment to supporting European legislation through timely and relevant standardization. The citation of the EN 1434:2022 series strengthens the role of standards in enabling innovation, ensuring consumer protection, and fostering a competitive and sustainable European market. By enabling the free movement of compliant thermal energy meters across the EU, these standards contribute to the efficient operation of district heating and cooling systems, which are vital for Europe’s energy efficiency and climate goals.
“The citation of the latest edition of the EN 1434 series is a major achievement for the thermal energy sector. It ensures legal clarity and supports the industry’s ability to deliver high-quality, compliant products across Europe. This is the result of enduring collaboration between experts, technical committees, and the Commission – which we are committed to maintain in lieu of the upcoming revision of the MID,” said Bledar Beqiri, Secretary of CEN/TC 176.
Supporting the internal market and the green transition
The EU is revising the MID to include new technologies like electric vehicle charging stations and hydrogen refilling stations, as well as to update requirements for smart utility meters. The European Commission initiated a public consultation in late 2024, with feedback periods having continued into early 2025, to address rapid technological advancements and ensure the Directive remains relevant for fair trading and consumer protection.
