PRICE INFORMATION
There are different costs that make up your monthly piped gas bill. This includes Mercury's retail costs, as well as the cost of gas itself, transmission, distribution, metering services, and carbon charges.
WHY ARE MY PIPED GAS PRICES CHANGING?
The cost of supplying piped gas changes over time. This includes the cost of gas itself, transmission, distribution, metering services, carbon charges and Mercury's retail costs.
Transmission and distribution charges have increased, along with ongoing pressure on gas supply costs. While wholesale gas prices have eased recently, they remain higher than historical levels. Together, these higher costs mean we're updating our 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.
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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.
You may see your new prices on your first bill after the effective date. It depends on your billing cycle. 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.
HAVE A QUESTION?
Due to ongoing supply constraints, the cost of getting gas to your home is increasing. As a result, we need to pass through these costs to our customers and adjust our prices.
We have completed or are nearing completion of around $1 billion of investment in new renewable generation. This is across three major builds—the Ngā Tamariki Geothermal Station expansion and the Kaiwera Downs 2 and Kaiwaikawe Wind Farms.
We also have plans to invest $590 million in hydro refurbishment over the next decade.
We reinvested half of our Half Year 2026 earnings into new and existing renewable assets. These investments are making a meaningful difference to Aotearoa's energy future.
