Join Mercury for electricity (and gas)

Join Mercury for electricity and you'll get 150 Airpoints Dollars™ and earn 5x Airpoints Dollars on a two year fixed plan. Terms apply.
Plus, switch your gas as well and you'll get a bonus 100 Airpoints Dollars. Terms apply.

Simply join below, select your offer, and we’ll take care of the rest. 
Offer ends 30 June 2019. Early termination fees apply. Gas not available in all areas.



How accurate is the estimate?

We can give you the most accurate bill estimate when you provide details of your energy usage from a previous bill. If you don't have a bill handy, we use the average of similar households in your area to give you an estimated monthly cost.

Do prices include GST?

Our rates exclude GST as this is the industry standard. However, we've included the GST in your summer and winter estimates to give you a better idea of your total monthly bill.

For more information on what makes up our prices, see here.

What's included in the plans?

You can select from either our Everyday Rates plan on no contract, or get a Solar charging kit. This 2 year fixed plan with Goal Zero gives you price certainty for 2 years and a Solar charging kit for you to keep. Terms and an early termination fee apply. 

What's the difference between standard and low energy users?

Low energy users tend to use fewer than 8000 kWh per year and typically only have 1-2 people at home - or are really energy efficient! Standard energy users usually use 8000+ kWh per year and usually have 3+ people at home - or there might be some energy hungry items at home.

Can I get gas?

Mercury offers mains piped gas together with electricity on a dual fuel discount of 15c/day. The summer and winter estimations in this form do not include this discount - this will be applied when the sign up process is complete.

Piped Gas is only available in the North Island. We do not offer LPG or gas only plans at this time.

Can I edit my information after signing up?

Yep! If you have entered incorrect information by mistake you don't have to complete this form again. Simply reply to your confirmation email and we'll update your details for you. Or, as soon as your switch is complete (usually within 2 weeks) you will be able to log into My Account to check and edit your details as needed.

Can I earn Airpoints on my monthly bill?

Yes, you can earn Airpoints on both your electricity and gas spend each month, on all plans. For more information read our Airpoints™  FAQs.

Wonderful discounts



We’ve joined forces with Air New Zealand, and you’ll now be that bit closer to taking off every time you switch on with Mercury.

Fly further


Join the and e.scooter movement. A fun, affordable way to keep moving. Check out our exclusive deals and take a test ride at one of our retail partners.

View e.bikes and e.scooters


Fuel your EV for the equivalent of 30c per litre. Plug in at home and save 20% on your entire home's electricity usage between 9pm - 7am every day.

Fuel up for less

Annual Price Plan review

To make sure you're on the most cost effective price plan, we check your energy usage every 12 months (as long as you're not on a fixed term plan). If we've got a better price plan for your needs, we'll automatically change it for you. It's all part of our commitment to great service. 

Think your usage might increase or decrease due to a change of appliances, or a change in who's living at home? Get in touch and we can talk to you about pricing and plan options.

100% renewable generation

100% of our generation comes from renewable sources – hydro and geothermal. This is something we're pretty proud of. It is good for New Zealand and it’s great for our customers to know that we contribute towards a healthier environment.

We ♥ NZ

Partnerships and kaitiakitanga are at the heart of our business. We are proud to assist with the wellbeing of the New Zealand community by supporting a number of organisations.