PRICE INFORMATION
Learn more about what makes up your piped gas charges, why prices are changing, how gas gets to your home, and what the future holds for gas in Aotearoa New Zealand.
WHAT’S DRIVING THE PIPED GAS PRICE CHANGE?
Your monthly piped gas bill is made up of several components, including the cost of the gas itself, transmission and distribution charges, metering services, carbon charges, and Mercury's retail costs. These costs are reviewed regularly to ensure our pricing reflects the reality of supplying gas to your home.
The gas supply landscape in New Zealand remains constrained, and ongoing uncertainty in the wholesale market continues to affect our supply costs. To ensure we can continue delivering a reliable service, we’ll be updating our gas prices.
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THE FUTURE OF GAS
UNDERSTANDING YOUR BILL CHARGES
In the gas section of your bill, you can view a breakdown of how your different charge types are calculated based on your prices, usage, and days in your billing period.
Charges for each unit (kWh) of natural gas you consume in your household. This is calculated by multiplying each unit of gas you’ve used (kWh) by your variable price.
Your units used (kWh) is determined by the units on your meter (actual or estimate) multiplied by your conversion factor.
Find out more about the conversion factor.
A fixed amount each day, no matter how much gas you use. Your Daily Fixed Charge total is calculated by multiplying your daily charge by the number of days in your billing period.
If you have electricity and piped gas with Mercury at the same address (determined by Electricity and Gas registry data provided to Mercury), we’ll give you a daily Dual Fuel Discount. If you are eligible for a Dual Fuel Discount, this will show as a credit in the piped gas charges section on your monthly bill.
Depending on when you receive your bill, you may see your new pricing on your first bill after the effective date. As your prices change, you may see two sets of charges; charges at your old price, and charges at your new price. After this, your bill will appear as normal.
FAQs
If Mercury were to absorb these costs, it would impact the amount we can put towards investment in new renewable electricity generation which is key for New Zealand's future as people use more renewable electricity in their daily lives.
We’ve committed $1 billion to new renewables in the last 2 years. We’re currently building new wind farms in Southland and Northland and expanding one of our geothermal power stations near Taupō – adding enough to power up to 142,000 houses. We’re reinvesting nearly half (46%) of our half-year 2025 earnings into new and existing assets to increase the level of renewable energy we can supply to New Zealanders, as well as increasing the security of supply for the country.
