An NMI (National Metering Identifier) is the unique ID for a market electricity connection point in the NEM. When installers lodge DNSP solar applications or retailers set up export plans, they use your NMI — not just your street address. Having it handy prevents delays on Australian grid-connect jobs.
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Look on your electricity bill (often near supply details) or ask your retailer. It is typically a 10–11 character identifier. Embedded networks and some legacy sites can be quirkier — confirm before quoting.
DNSPs map hosting capacity and existing devices to the NMI. Export limits and meter exchanges reference it. Address-only applications create avoidable back-and-forth.
Solar usually needs a meter that records import and export. Your metering coordinator/retailer process may replace or reconfigure meters after approval. Budget days without final billing until it settles.
Some properties have multiple NMIs (house + granny flat, sheds, pumps). Install on the correct connection. Wrong NMI selection is a classic expensive mistake.
Share your NMI with installers you are seriously comparing — it is operational, not a secret password, but still personal account data. Reputable CEC-accredited firms via MrSolar treat it professionally.
Keep NMI, inverter serials and CEC accreditation details in one folder with STC assignment forms. Future battery upgrades and VPP enrolments reuse the same identifiers.
Have your NMI ready when requesting quotes — compare CEC-accredited installers on MrSolar.
Written and reviewed by Daniel (Marketplace lead, Epic Unicorn Pty Ltd). We build pages from Australian solar datasets and regulatory references, then map you to CEC-accredited installers only.
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