Business power in Taranaki: what sets your price

Which lines company runs the network in Taranaki?

Powerco runs the lines across the region, from Waitara and New Plymouth down to Hāwera, Ōpunake and Waverley. It is not consumer-owned, so the Commerce Commission regulates its revenue and quality. Powerco also runs Taranaki's gas distribution network.

Taranaki is in Powerco's western pricing region, together with Whanganui, Manawatū, Rangitīkei and the Wairarapa. That region's schedule changed on 1 April 2026. Powerco says its lines charges for commercial connections rose 7.6% on average and industrial charges rose 11.8%. The transmission component, which passes on Transpower's grid charges, rose 13.6% across the western region.

Why does your location inside Taranaki change your lines charges?

Powerco groups connections by the grid exit point that supplies them. In Taranaki, sites fed from Carrington Street (New Plymouth), Huirangi or Stratford are in Zone A. Sites fed from Hāwera, Ōpunake or Waverley are in Zone B, which costs more. Here are Powerco's 2026 rates for a three-phase 64–250 amp business connection:

Peak times are 7–11am and 5–9pm on weekdays; all other times are off-peak.

How do larger Taranaki sites get charged?

From 200 kVA upwards, Powerco relies less on per-kWh prices and more on demand. For its 200–299 kVA category, both the distribution and transmission demand charges are based on your anytime maximum demand. That is the single highest kW your site drew in the previous September–August year. Sites of 300 kVA and above are priced individually, based on the network assets they use. Most of their charges are set per kW of demand.

The demand rate also changes across Taranaki. Powerco's 2026 demand charges for a 200–299 kVA site, distribution and transmission combined:

For a site that peaked at 150 kW, that works out at about $19,300 a year in New Plymouth and $39,900 in Ōpunake, before fixed and per-kWh charges. One careless spike can cost you for a whole pricing year, so stagger the start-up of motors, compressors and heating.

Powerco has also joined Localflex, New Zealand's first local flexibility market, launched on 11 August 2026. It pays businesses with batteries, solar, EV chargers or adjustable load to ease network pressure at busy times.

What does the gas decline mean for Taranaki businesses?

Every producing gas field in New Zealand is in Taranaki. The Gas Industry Co's 2026 study found national production has more than halved since 2016 and fell 34% in the last two years alone. That is the lowest level since 1983. It also found that tighter gas supply has made wholesale electricity prices higher and more volatile, because gas-fired stations run at peak times and in dry years.

• Māui. In April 2026, the field's operator told the government in its annual report that it expected production to finish at the end of 2026. It added that no final decision on timing had been made.
• Methanex. On 2 September 2026, Methanex said it would idle its methanol plant and sell its gas contracts from early 2027. Methanex has used around 30–40% of the country's gas production.
• LNG. Both shortlisted proposals for an LNG import terminal at Port Taranaki involve a ship moored alongside the Main Breakwater.

Transpower's draft 2026 Security of Supply Assessment, released for consultation in April 2026, said the sector had taken a meaningful step toward mitigating the risks from the faster-than-expected gas decline, and that new generation and battery storage must keep coming into the 2030s.

For gas users, Powerco's gas distribution charges rise by an average of 13.4% from 1 October 2026. See business gas and LPG if you use gas on site.

What is Taranaki's business mix, and what should you check?

At February 2025, Stats NZ counted 16,527 business locations in Taranaki. In its figures for the year to March 2024, forestry, fishing and mining made up about 17% of the region's industry output, and primary manufacturing about 11%. Nationally, those figures were 2% and 5%. That makes Taranaki's economy more weighted towards industry than the country as a whole.

Things to check:

• Your zone and price category. You can find them on your bill or by asking your retailer. Your ICP number identifies the connection.
• Your highest demand in the past September–August year, if your connection is 200 kVA or larger, and which grid exit point supplies you.
• Your energy contract. Network prices are the same whichever retailer you use, but energy rates are not. Gas volatility makes the length and terms of your contract as important as the headline price.

We compare commercial energy in every lines area across NZ — see where we work. You can also see what we do for business electricity or ask us to review your Taranaki account.