Smart meters, explained without the brochure language
A smart meter is a digital electricity meter that records what you use every 30 minutes and sends those readings to your retailer automatically. That is the whole device. It does not make electricity more expensive, it does not decide your prices, and it is not optional: every remaining meter in Australia is due to be replaced by 2030. What it genuinely changes is that, for the first time, there is a detailed record of when your house uses power. That record is what makes everything else on this site possible, and it is also what most households never look at.
Last checked: 14 August 2026Scope: Australia, with NSW detail linkedNext review: January 2027
What actually changed from the old meter
| Old accumulation meter | Smart meter | |
|---|---|---|
| How often it records | One running total, read quarterly | Every 30 minutes |
| How it is read | A person visits your property | Sent remotely over mobile or radio |
| Estimated bills | Common when access fails | Largely eliminated |
| Solar | Import and export poorly separated | Measured separately in both directions |
| Time based pricing | Not possible, no timestamps | Possible, which is the real consequence |
The last row is the one that matters. An accumulation meter physically could not support a time of use tariff, because it had no idea when you used anything. A smart meter can, and that is why tariff changes and meter changes so often arrive together.
What it means for your bill, honestly
The meter adds nothing to your usage charges and there is no upfront cost to you under the national rollout. If your bill went up after a swap, the meter did not do it: something else changed at the same time, and the usual candidate is the tariff your retailer bills you on. That is a separate decision with its own rules, and it is worth checking rather than assuming either way.
Two facts sit underneath most of the confusion. First, there are two tariffs: the network tariff your distributor charges your retailer, and the retail tariff you are actually billed on. The network one often defaults to time of use on a meter change, which is normal and by itself costs you nothing. Second, since 1 December 2025, if your retailer replaced your meter, it cannot move you off a flat rate onto a time of use or demand tariff for two years without your explicit informed consent. That applies in NSW, Queensland, South Australia, Tasmania and the ACT, and only while you stay with the retailer that installed the meter.
After two years your retailer can change your tariff structure without consent, but it must give at least 30 business days' notice and show what your last 12 months would have cost under the new structure. If your meter was swapped before 1 December 2025, or you have since switched retailers, that protection may not apply to you. There is a fuller walkthrough on what to do when the bill goes up after a smart meter.
Can you refuse one?
Not in any lasting sense. Under the accelerated national rollout every remaining meter is due to be smart by 2030, your retailer arranges the replacement, and there is no permanent opt out. This is the answer that has changed most in the last few years, and a lot of older advice online still implies otherwise.
What you do retain is worth knowing: you can ask about timing, you are entitled to notice, and you have rights over the tariff you are billed on, which is the part that actually affects your money. The useful energy has moved from refusing the meter to controlling what happens to your tariff afterwards.
The first month: three checks worth doing
- Compare tariff names across the swap. Put your last old bill beside your first new one and read the tariff name on each. If it changed and you did not agree to it, that is worth a phone call. This single check catches the most common real problem.
- Ask your retailer for your interval data. It is yours. Most retailers provide it through their app or portal, and some make you ask. Until you have it, every conversation about your usage is guesswork on both sides.
- Check your controlled load. If your hot water was on a separate off peak circuit, confirm it still is. Controlled load arrangements sometimes get reconfigured during a meter change, and a hot water system quietly moved onto the main tariff is an expensive thing to discover a quarter later.
Where to go from here
- Smart meters in NSW, network by network, including a postcode lookup for working out which distributor you are on.
- Time of use tariffs, with all three NSW networks' windows side by side and a verdict rule for whether one pays.
- The calculator, if you would rather put your own numbers in than read tables.
- What a smart meter costs, which is nothing upfront, and the two things that are not free.
- Shifting usage off peak, the four loads that actually move.
- Bill higher after the swap, which is the ten minute diagnostic version of this page.
Questions people ask
What is a smart meter?
A smart meter is a digital electricity meter that records your usage in 30 minute intervals and sends the readings to your retailer over a mobile or radio network. It replaces a manual read with an automatic one, which means no estimated bills and no meter reader needing access to your property.
Do smart meters cost more to run?
No, the meter itself adds nothing to your usage charges. There is no upfront cost to you for the meter under the national rollout. What can change your bill is the tariff your retailer bills you on, which is a separate decision and worth checking against your old bill.
Can I refuse a smart meter in Australia?
No, not under the accelerated national rollout: every remaining meter is due to be a smart meter by 2030. Your retailer arranges the replacement and you cannot opt out of a new meter indefinitely. You can ask about timing, and you keep rights over the tariff you are billed on.
How often does a smart meter read your usage?
Every 30 minutes, which is the change that matters. An old accumulation meter gave one number per quarter, so nobody could tell a pool pump from a heater. Interval data means you can see which hours cost you money, which is what makes a time of use tariff decidable rather than a guess.
Does a smart meter put me on a time of use tariff?
Not by itself, and there are two tariffs involved. The network tariff your distributor assigns does often default to time of use on a meter change, but the retail tariff is what sets your bill. Since 1 December 2025 the installing retailer needs your explicit informed consent to change that structure.
Does a smart meter measure my solar export?
Yes, and separately from what you import. A smart meter records electricity flowing both ways, so your bill can show consumption and export as distinct figures. That is what makes a feed in tariff possible to bill accurately, and it is one thing an old accumulation meter could not do properly.
How long does a smart meter installation take?
Between 30 minutes and two hours with your power off, depending on your retailer and your meter board. You get at least four business days' notice naming a window. You do not usually need to be home, as long as the installer can safely reach the meter box.
What should I do in the first month after a smart meter?
Three things, and they take under an hour total. Compare the tariff name on your first new bill against your last old one. Ask your retailer for access to your interval data. And check whether your hot water is still on its controlled load circuit, because that sometimes changes.
Who wrote this
- Angus Lewington
- Founder of Alien IT Solutions (ABN 32 385 519 280), which runs Smart Home Fix. Day to day that means Home Assistant rescues, smart home repair and getting household data into something a person can actually read. More at anguslewington.com.au.
- Why we write about meters
- Because a smart meter is the first time most households get their own interval data, and making that legible is the work we do. We are not a retailer, we do not sell you electricity, and we get nothing from you switching plans.
- How this page is maintained
- Checked on 14 August 2026 and reviewed each January and July. Rollout dates and consent rules change, so if you spot something out of date, tell us and we will fix it.
The meter records every half hour of your household's electricity and then hands it to your retailer. You can have it too. We set up a home energy dashboard that shows that data against the times your plan charges different rates, gives you a straight verdict on whether a tariff change cost you money, and automates the shifting worth automating. See how the dashboard setup works.