Your guide to switching power companies or plans

What to expect when you switch and how Billy can make it easy.

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There are plenty of reasons you might consider shifting to a different power company or plan, and making the move is simple.

Check during times of change. Many people take a look at their power options during times of change, like moving house, having a baby, or getting a higher-than-average power bill.

Billy helps you compare power companies and plans. With Billy, you can either upload a recent power bill or answer a few simple questions, helping you choose between power plans and companies for the best deal.

There's more to consider than just price. Contract terms, benefits, and unique offers all play a part.

Power companies take care of the switch. They'll work with your previous power company to make the process smooth.

When might you consider switching power plans?

There's no right or wrong time to consider switching power companies or plans, but it’s a good idea to check at least once or twice a year to make sure you’re on the best plan for you and your household. Good times to check are:

When your household situation changes: For example, people moving in, kids leaving home, or shifts in your daily routine that affect how and when you use power.

When you’ve had a price increase: A higher power bill is a common reason for looking at different plans and power companies.

When you add new appliances or technologies: This could be putting in solar, buying an EV, or upgrading heating systems which significantly change your energy needs.

When your bills start to feel out of step: For example, if seasonal or lifestyle changes mean your current plan no longer matches how you use electricity.

When you’re moving house or renovating: These are natural points where you might check whether your existing plan suits your new setup.

How can I compare power plans?

If you're thinking about switching power plans or companies, Billy gives you the power to check.

Billy is a free and independent tool brought to you by the Electricity Authority Te Mana Hiko. The Electricity Authority is an independent Crown entity responsible for regulating the electricity industry and promoting competition among power companies for the long-term benefit of consumers.

How does Billy work?
Billy helps by taking a second look at your power use, allowing you to compare your options. You can choose to upload a recent power bill or answer a few simple questions about your power usage. Billy then shows you power plans and companies and shows what you could save by switching or if you’re already on a suitable plan.

Is there more to consider than price?

When looking into new plans, there are factors beyond the price per kilowatt hour to consider:

Contract terms and exit fees: If you’re on a fixed-term plan, check if there’s an exit fee before you switch, or see if a new power company will offer a joining credit to cover this exit fee.

Offers and benefits: Some power companies offer perks like joining credits, free appliances, free power hours, or dual-fuel discounts, which offer one-off savings or ongoing value over time.

Bundles and combos: Some plans package services together to make it easy— like broadband, gas, internet, and power — though these don’t always lower your overall costs.

Metering and suitable plans: You need to have a smart meter for many time-of-use or solar-friendly plans. If you don’t have one, check with your new power company about upgrading when you switch.

How does switching power companies work?

Check out your power company and plan options: Billy is a free tool that can help you compare and make the best choice for you.
Pre-checks: Before the switch, your new power company will usually run a credit check. They'll keep you updated with progress, and may be in touch to confirm details.
The switch: Once approved, your new power company will manage the switch for you, working together with your previous company on your behalf.
The final payment: Your previous power company will issue your final bill. Check it carefully for details including meter readings, dates and any exit fees.
Your new bill: Once you've switched, you'll start getting bills from your new power company under your new agreed plan. Double-check the first few bills to make sure any rates, discounts, and charges are what you're expecting. If something looks off, contact your new power company immediately.

It’s a good idea to review your plan at least once or twice a year - the price could go up, and household size or technology (like EVs or heating) may change.

Common myths about switching debunked

Myth: “I’ll be disconnected when I switch.” Reality: Switching won't stop or interrupt your power supply – the new company takes over seamlessly.
Myth: “The switch takes weeks.” Reality: Most switches only take a couple of days.
Myth: “Only big savings matter.” Reality: Even small savings add up over time.
Myth: “Switching costs money.” Reality: For most household customers, switching is free. You just need to check for any exit fees on your current contract.

This article was last updated 24 March 2026