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Nelson

Electricians in NelsonSunny roofs, old cables and one lines company now.

Tell us about your Nelson electrical job and we'll match it with one licence-checked local electrician who specialises in that work. For faults on the lines, Network Tasman now runs all of Nelson and takes calls on 0800 508 100 or 03 546 9256.

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Central Nelson and Christ Church Cathedral seen from the hill at the Centre of New Zealand.
Photo: Michal Klajban, Wikimedia Commons, CC BY-SA 4.0, cropped

Nelson's network, street by street

Two networks became one

Central Nelson, including the CBD, the Port, The Wood, the Brook, the Maitai and Washington Valley, was the network Nelson Electricity ran. That company amalgamated with Network Tasman on 31 March 2026, so one company now runs both. Different prices are still set for the two areas.

Old cable underground

About 90% of the old Nelson network is underground, and much of that cable went in during the 1960s and 1970s. The oldest 11 kV cable dates from 1938. In the CBD the low voltage network is fully underground; across the rest of the Stoke supply region's urban area it's about half.

Weather and slips

In August 2022 a state of emergency followed heavy rain, and a tree broke the lines on Marsden Valley Road, cutting power to Atawhai, Founders, Marsden and Isel. An April 2013 rainstorm flooded an estimated 90 homes across Nelson and Tasman, worst along Orphanage Creek in Stoke.

Heritage and growth

Nelson has kept many nineteenth-century buildings in its historic centre, and the South Street area has heritage value. Network Tasman expects further subdivisions in the Marsden, Ngawhatu and Maitai valleys.

Solar is the Nelson job

Network Tasman says solar uptake in Nelson is high compared with other parts of the country, with about 3,800 mostly domestic sites. That shapes the work local electricians do.

Getting approved. For systems of 10 kW or less, Network Tasman recommends you don't buy a system until your application is approved. You need a registered electrician and a Certificate of Compliance, and you can't export until the generation metering and final inspection are done. Its default export limit is 10 kW unless its assessment says lower.

Updating older systems. The allowable voltage range rose to 230V plus or minus 10% from 13 November 2025. Network Tasman asks solar owners to have their installer update inverter settings to the current standard, or output may be reduced. If your panels went up years ago, that's a quick job worth asking about.

Batteries. Network Tasman has set standard settings for home battery inverters too, so batteries don't all recharge at peak times or all at once after a long power cut.

Older houses, newer needs

Nelson's historic centre has held on to its old buildings, and an older home anywhere in the city can still have rewireable fuses, no RCDs and fewer power points than a modern household needs. Common jobs are swapping fuses for breakers and RCDs, adding power points, and checking the wiring before a renovation opens up the walls. WorkSafe says any new lighting or power point circuit from the board needs RCD protection.

Lines on the ground

Network Tasman says the ground around a downed line may be electrified. Stay well away and warn others, then call 0800 508 100 with the location. If a line lands on your car, stay inside unless there's a fire risk. If you must get out, hop or shuffle with your feet together until you're at least 10 metres away. Call 111 if anyone's hurt.

What we'd do in Nelson

If your solar went in before November 2025, we'd ask an electrician to confirm the inverter settings match what Network Tasman now asks for. Thinking about a battery or more panels? Get the application in and approved before you sign anything.

Want a specialist to sort it?

Tell us the job and your postcode. We match the licence-checked local electrician who does this kind of work, and they call you. No ring-around, and your number goes to them alone.

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Your suburb

Suburbs and areas around Nelson

Questions

Straight answers.

Who do I call for a power fault in Nelson now?

Network Tasman, on 0800 508 100 or 03 546 9256, wherever you are in the city. Nelson Electricity's network is now part of Network Tasman.

My lights keep dimming and brightening. Who do I ring?

Network Tasman asks people with fluctuating power to call its fault line. If only part of the house is out, check your switchboard for a tripped breaker or blown fuse first.

Is solar on a Nelson home high-risk work?

Yes. Solar PV is classed as high-risk prescribed electrical work, so it needs a Certificate of Compliance, an inspection by a licensed electrical inspector with a Record of Inspection, and an Electrical Safety Certificate.

Ready for a sparky in Nelson?

Pop in your postcode and answer a few quick questions. We find the licensed local specialist for the job.

Related help

Helpful next

Electricians in Nelson TasmanNetwork Tasman's fault numbers, storm lessons, solar applications and growth across Nelson and Tasman.Electricians in RichmondSolar, EV chargers and new homes on Network Tasman's lines in Richmond, Tasman.Old switchboards with rewireable fusesCeramic rewireable fuses: why they're a concern, the fuse wire trap, and what replacing them involves.Old wiring: rubber, cloth and early TPSRubber, cloth and early TPS cable: how to spot it, why it fails, and what an electrician does about it.Electrical inspectionsInspections the law requires and safety checks you choose: who does them, and what you get at the end.Electricians in MotuekaNetwork Tasman's fault line, single rural lines, the 2025 floods, tree notices and growth around Motueka.

Where this information comes from

Rules change, so check with the EWRB, WorkSafe or Tenancy Services if something matters to your job. How we write and check these pages.

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