Dispatchable Unit Identifier — AEMO's unique code for each registered grid asset.
A Dispatchable Unit Identifier (DUID) is the short alphanumeric code AEMO assigns to every registered dispatchable unit in the National Electricity Market — generators, loads, and batteries alike. It is the primary key AEMO's dispatch and settlement systems use to identify a unit in every public data table.
For a battery energy storage system, the DUID typically covers the whole registered facility rather than an individual inverter or container, though large sites are occasionally split across more than one DUID (for example when a project registers multiple connection points). NEMPulse uses the DUID as the canonical identifier throughout — in URLs (`/battery/HPR1`), in API responses, and in every exported CSV — because station names change or get abbreviated inconsistently across sources while the DUID does not.
See also: Battery fleet
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