Metering Standards Reference

Global Metering Standards

A quick-reference guide to the major international and regional metering standards.

IEC / DLMS Standards

• IEC 62056 / DLMS-COSEM — The dominant global standard for electricity meter data exchange. Maintained by the DLMS User Association.
• IEC 61968 CIM — Common Information Model for utility back-office and MDM integration.
• IEC 62056-21 — Local data exchange via optical port (Mode A–E).

ANSI Standards (North America)

• ANSI C12.19 — Utility Industry End Device Data Tables
• ANSI C12.18 — Optical Port protocol
• ANSI C12.22 — Network communications for end devices

Legal Metrology

• MID (2014/32/EU) — Measuring Instruments Directive, EU legal framework for meters in trade.
• OIML R49 — International recommendation for water meters.
• OIML R46 — Active electrical energy meters.
• WELMEC — European cooperation in legal metrology guidance documents.

IoT / Communication Protocols

• LwM2M (OMA) — Lightweight M2M protocol for NB-IoT connected meters.
• DLMS WSM GCP — Water Smart Meter Generic Companion Profile (DLMS UA 1015-3).
• DSMR (Netherlands) — Dutch Smart Meter Requirements P1 port standard.
• SML — Smart Message Language, used in German meters.