NEM12

AEMO format for transmitting interval metering data in Australia.

Definition

NEM12 structure: 100 (header), 200 (NMI Data Details), 300 (Interval Data Record), 500 (Event Record). 30-minute or 5-minute granularity since the 5MS rollout (October 2021). Coupled to AEMO Markets Information System (MIS).

Origin

Published by AEMO (Australian Energy Market Operator) — Meter Data File Format Specification.

Example in context

300,20260101,1.234,1.235,...,A — 5-minute interval record for 1 January 2026.

Related terms

• AEMO spec — publishing regulator.