Power prices in Greymouth

As at May 2026, electricity in Greymouth averaged 48.29c per kWh including GST. For a household using 8,000 kWh a year on a low-user plan, paying on time and taking any prompt-payment discount, with controlled hot water, that works out to roughly $3,863 a year. That is 14.9% above the national average of 42.04c, making Greymouth the 5th most expensive of the 42 towns MBIE surveys.

Lines charges are the part of a power bill that changes most from town to town, because every area is served by a different network. In Greymouth the lines component is 19.93c per kWh — 41% of the total, against 40% nationally. The remaining 28.36c covers energy, metering and retailer costs, which vary far less by location.

Westpower. Greymouth sits in the West Coast (Westpower) network reporting region, and Westpower owns and maintains the poles and wires — so they are who you call in a power cut, not your power company. Their faults line is 0800 768 241. Your retailer is who you choose and who bills you; the lines company is fixed by where you live.

Yes. In February 2004 the Greymouth average was 19.52c per kWh; by May 2026 it was 48.29c — a rise of 147% over 22 years. Over the last twelve months alone it rose 6.4%.

Possibly. The MBIE figure is an average of publicly advertised tariffs across Greymouth, not a quote — what you pay depends on your usage, your meter and which company you are with. Switching retailer does not change the 19.93c lines component, but it does change the 28.36c that sits on top of it. Comparing the companies we work with is free and takes a couple of minutes.