Energisation

Energisation is connecting a new or altered electrical installation to live supply, so it has permanent power. It happens only after the wiring is complete, tested, and certified, and on a new build it is often a critical-path item in the run to completion.

Energising an installation is a sequence, not a flick of a switch:

• the licensed electrician completes and tests the installation to AS/NZS 3000 and issues a certificate of compliance (called a certificate of electrical safety or similar by state),
• the service connection to the network is arranged (the supply point, the consumer mains, and the metering),
• the distributor/retailer energises the connection and the meter is installed and the National Metering Identifier (NMI) set up, and
• only then is the switchboard live and the installation usable.

On a new dwelling, energisation typically follows lock-up and the electrical fit-off, and it depends on third parties (the network distributor and the metering coordinator) whose timeframes the builder does not control, which is why it is a common late-stage delay.

For a builder the practical points are to plan energisation early: apply for the supply connection and metering well ahead, because the distributor’s lead time can hold up power even when the house is finished. Confirm the electrician’s certificate is issued (energisation cannot lawfully proceed without it), and remember temporary builder’s supply during construction is a separate, earlier connection. Treat permanent energisation as a scheduled, third-party-dependent milestone, not an afterthought at handover.

Also known as: Energising, permanent connection, going live.

Category: Electrical / Connection.

Related

• AS/NZS 3000 Wiring Rules
• Lock-up stage

See also

• Practical completion

References

• AS/NZS 3000 Wiring Rules, Standards Australia (verified 2026-06-04)

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Last updated: 2026-06-04. Verified: 2026-06-04. Quarterly review for currency.