What's happening in world energy — and why NZ business bills feel it

How does world energy reach a New Zealand business bill?

World energy reaches New Zealand businesses mainly through fuel, then gas, and only indirectly through electricity. The war in the Middle East that began on 28 February 2026 hit diesel hardest. The wholesale power market was cushioned because New Zealand does not import natural gas (LNG) and hydro storage was high.

Here is where the main channels stood as at September 2026.

Why did diesel jump while power stayed calmer?

Diesel jumped because New Zealand buys refined fuel at world prices, while more than 90% of its electricity is renewable (Electricity Authority).

The IEA's September 2026 Oil Market Report says global observed oil inventories have fallen by 507 million barrels since February. North Sea Dated crude averaged US$91 a barrel in August and reached US$113.48 on 9 September. Refining margins hit record levels in the Atlantic Basin in August, led by diesel.

At the pump, diesel prices were up 71% in the year to the June 2026 quarter and petrol 27.5% (Stats NZ). In August, diesel rose another 8.6% in a single month.

Electricity behaved differently. Futures for the June 2026 quarter swung between $158 and $220/MWh at Ōtāhuhu in March as the market weighed the war. By the end of July, September 2026 futures had fallen to $67/MWh at Ōtāhuhu and $50/MWh at Benmore on high hydro storage (Electricity Authority).

Supply mix matters. The IEA says wholesale power prices in the European Union and Japan, which rely on imported LNG, rose more than 30% year-on-year in the June 2026 quarter, while Australia's were about 45% lower, helped by renewables and batteries.

So why are business power bills still rising?

Mostly for domestic reasons, not global ones: network charges are climbing under the Commerce Commission's 2025–2030 price path, and the long decline in New Zealand's own gas supply has pushed wholesale prices up since 2019 (Electricity Authority). Our guide to why business power bills are rising in 2026 sets out each driver with the latest figures.

Global equipment prices add to this: the IEA says tight supply chains are "raising the cost of key components such as transformers and cables," which New Zealand's network owners also buy and recover through lines charges over many years.

What happens if New Zealand starts importing LNG?

If an LNG terminal is built, New Zealand's dry-year gas supply would be linked to world LNG prices for the first time.

The Government's February 2026 fact sheet describes LNG as dry-year insurance, expected to lower forward electricity prices by at least $10/MWh, paid for by an indicative $2–$4/MWh levy on electricity. By June, the Government proposed funding it through electricity retailers instead (Gas Industry Co). Either way, the infrastructure cost would be recovered through the electricity sector.

The gas itself would be bought at world prices and paid for by whoever uses it. That market is tight: the IEA expects LNG supply from Qatar and the United Arab Emirates to fall by about 45% in 2026, delaying the price relief expected from a wave of new export capacity.

Timing is now uncertain. The Government's June update planned a Port Taranaki facility running in 2028 (Gas Industry Co), but RNZ reported on 23 September 2026 that the decision has been delayed until after the election.

How do data centres and the renewables boom affect NZ prices?

Data centres reach New Zealand mostly indirectly, through strain on global energy-equipment supply chains.

The IEA says data-centre electricity use grew 17% in 2025 and will roughly double from 485 TWh in 2025 to 950 TWh by 2030. It says a 70% surge in gas-turbine orders in 2025 exposed chokepoints in energy supply chains, and that strong US and Middle Eastern demand is limiting turbine supply elsewhere.

At home, none of the new capacity relies on gas, the Electricity Authority says. As at 8 September 2026, Transpower was delivering 17 new generation projects that will add 3,342 MW. The Authority says the likely result is "long periods of very low prices," "short periods of very high prices" and lower average prices over time.

Does the ETS carbon price matter for my bill?

It matters at the margin, because carbon costs are built into fuel, gas and coal-fired generation. Right now the carbon price is weak.

The NZ ETS auctions on 9 June and 8 September 2026 drew no bids, so none of the 3.9 million units offered in September sold. The Spinoff reported secondary-market units at $49 against the $71 minimum auction price, with the carbon price now an election issue. If you burn gas or run a diesel fleet, watch this after the election.

What can a New Zealand business do now?

Start by separating the costs you can influence (your energy rate, contract timing and usage) from the ones you can't (network charges and world oil prices).

• Split your bill. Lines charges depend on your network and ICP. The energy rate is the part you can shop around for. Our regional hubs show which lines company serves your area.
• Time your contract. The Government's LNG fact sheet notes that business power prices are driven by forward prices. These eased through July 2026, and the Electricity Authority says the forward curve points to prices holding steady or rising slightly over three years. If your fixed term ends within a year, compare offers early; the savings calculator is a quick place to start.
• If you use gas, plan ahead. Gas Industry Co says some large gas users are being offered either short-term contracts or long-term ones with a large price premium. EECA co-funds walk-through energy audits for businesses spending $30,000–$250,000 a year on piped gas. The Government is also backing up to $1.2 billion of bank loans to help gas users switch, covering 80% of each loan for businesses using at least 1,000 GJ a year.
• Cut peak use and fuel use. EECA's modelling says flexible electricity use and batteries could save energy users $5.4–$20.8 billion by 2050. The IEA notes that solar panels and batteries partly protect businesses from energy shocks.

For the day-to-day side of this, see what we do for business electricity, or talk to us about your contract dates.