Got a smart meter? Check your tariff — the quiet switch that changes your bill.
Australia's accelerated smart meter exchange is rolling through the eastern states from December 2025 to 2030 — and the meter itself is genuinely fine. The thing to watch is the plan that can ride along with it: a quiet move from a flat rate to time-of-use or demand pricing. Here's how to spot the switch on your bill, the two-year consent protection that commenced 1 December 2025, what a demand charge does to a winter bill, and how to get a flat-rate plan back — no purchase required.
Reviewed by the Mission Green Energy Team · Updated July 2026
The meter is fine.
Check the plan riding along with it.
A smart meter is genuinely useful — remote reads, no estimated bills, and it's effectively required for solar, batteries and VPPs. The thing that changes your bill isn't the hardware: it's a tariff structure switch some customers are moved to around the meter exchange. That switch is checkable in five minutes, and usually fixable for free.
Here's the honest frame. The Australian Energy Market Commission made a final rule on 28 November 2024 requiring smart meters for effectively all customers in the National Electricity Market by 2030, with the accelerated replacement of old accumulation meters commencing in December 2025 (source: AEMC, Accelerating smart meter deployment). So if a letter about a meter exchange has arrived — or the meter has already been swapped — you're part of a planned national program, not being singled out.
The consumer issue that actually matters sits one layer up: once a smart meter can measure when you use power, both your network and your retailer can price you by time — and some customers have found themselves moved from a simple flat rate to a time-of-use or demand tariff around the swap. For some households that's genuinely better; for others it's a quiet bill increase. The good news, as at July 2026: national rules that commenced on 1 December 2025 give you a two-year consent protection, and a flat-rate plan is usually still available for the asking. The rest of this guide shows you exactly what to check and what to do — and none of it requires buying anything.
The 2025–2030 exchange wave,
without the drama.
Roughly speaking: old spinning-disc and basic digital meters across the eastern states are being systematically replaced with smart meters between December 2025 and 2030. Victoria already did this years ago. Here's the shape of it.
- The rule. The AEMC's final rule (made 28 November 2024) targets universal smart meter deployment across the NEM by 2030, with reforms phased in progressively from December 2024 to July 2026 and the accelerated legacy-meter replacement program commencing in December 2025 (source: AEMC media release, 28 Nov 2024).
- Who it covers. The exchange wave is aimed at New South Wales, Queensland, South Australia, Tasmania and the ACT. Victoria is the exception — Victorian homes got smart meters under a state program completed more than a decade ago, and Victorian retail rules are set separately by the Essential Services Commission of Victoria, not the national retail rules.
- You get notice. Retailers must notify small customers before a planned meter exchange — the AER has published guidance to retailers on these notice obligations (source: AER, Smart meter rollout, current as at July 2026). Keep that notice: it's your record of what you were told, and weren't.
- The meter itself costs you nothing to like. Remote reads end estimated bills and manual read visits, outages are detected faster, and the meter is the enabling hardware for solar export metering, batteries, VPP participation and free-power windows like Solar Sharer.
Wondering if you can simply say no to the meter? That's a different question with its own honest answer — see our companion guide: can I refuse a smart meter, and will it force me onto a time-of-use tariff?
The two-year consent rule
— what it does and doesn't cover.
Since 1 December 2025, national rules stop the retailer that installed your smart meter from quietly changing your tariff structure. Strong protection — with three limits worth knowing before you rely on it.
After stakeholders pushed back on early drafts of the rollout rule, the AEMC added consumer safeguards. As at July 2026, the position in the national-rules states (NSW, QLD, SA, TAS, ACT) is:
- Two years of consent protection. For two years after a smart meter is installed, your retailer cannot move you to a new tariff structure — flat to time-of-use, or flat to demand — without your explicit informed consent. Consent only counts if the retailer clearly, fully and adequately discloses what the change means for you (sources: AEMC; AER, Consumer rights and smart meters). These obligations commenced on 1 December 2025.
- Bill comparisons after that. Once the two years pass, a retailer wanting to change your tariff must first give you historical bill comparisons — what your bills would have been on the new tariff — plus practical information on managing your usage (source: AEMC, 28 Nov 2024).
- Flat-tariff availability. The rule package also enables state governments to require designated retailers to keep offering flat tariff options to smart meter customers (source: AEMC, 28 Nov 2024).
Now the three limits — this is the part a rushed summary skips:
- It follows the installing retailer. If you switch retailers after the meter goes in, the AER notes these consent rules do not apply to your new retailer — a new market contract is a fresh deal, so read the new plan's structure before signing.
- Timing matters. The consent obligations commenced 1 December 2025. If your meter was exchanged before that date, different notice rules applied at the time — dig out the letters your retailer sent, because what you were told then is your reference point.
- Victoria is separate. The two-year rule lives in the National Energy Retail Rules, which Victoria hasn't adopted. Victorian plan-change protections come from the ESC's Energy Retail Code of Practice instead.
One honest caveat on all of the above: retail rules get amended, and the AER updates its guidance. Treat the specifics of your own case as a question for the notice your retailer sent you — and verify the current rules at aer.gov.au before relying on any date here.
How to spot a tariff switch
on your own bill.
Grab your first full bill after the meter swap and one from before it. Three lines tell you everything.
The plan or tariff name
Words like "time of use", "flexible pricing", "peak / off-peak" or "demand" where your old bill said "general usage", "single rate" or "anytime" are the headline giveaway. The tariff code near your meter details often changes too.
The usage table
A flat-rate bill charges one rate in c/kWh for everything. A time-of-use bill splits your usage into peak, shoulder and off-peak rows at different rates — peak typically covering weekday evenings, exactly when most families use the most.
A line measured in kW
A charge measured in kilowatts (kW) — not kilowatt-hours — labelled "demand" or "capacity" means you're on a demand tariff. This is the structure most likely to surprise you in winter, and the one to spot early.
What a demand charge does
to a winter bill.
Demand tariffs don't bill you for how much energy you use — they bill you for your single worst half-hour. In winter, that distinction is the whole story.
Here's the mechanic, because almost nobody explains it before you're on one. A demand charge measures your highest half-hour of usage (in kW) during a defined window — often weekday evenings — and then multiplies that peak figure across every day of the billing period. Exact windows, rates and reset periods vary by network and retailer, so check your own plan's terms.
Now put that in a real winter evening. It's 6pm in July: the reverse-cycle heating is running hard, the oven's on, someone starts the dryer, and the hot water reheats. If those overlap in one half-hour, that single spike can set your demand charge for the whole month — even if every other evening that month was modest, and even if your total energy use didn't rise at all. That's the pattern behind many "my bill jumped after the new meter and I didn't change anything" stories: the household didn't use more, it just stacked its appliances once.
Who copes fine on demand tariffs? Households that can genuinely stagger their big loads — or that have a battery quietly shaving the evening peak. Who gets bitten? Busy families whose life structurally happens between 5pm and 9pm. If that's you, a demand tariff is a poor structural fit no matter how disciplined you are — and the fix is a plan change, not guilt. The full comparison, with worked examples of who wins on each structure, is in our guide: time-of-use vs flat vs demand tariffs — which won't bite you?
Time-of-use isn't a scam —
it's just not for everyone.
Here's the part a fair guide has to say: for some households, the tariff "they moved you to" is genuinely the better deal. The question is which side of the line you're on.
EV owners & load-shifters
If you can charge a car, run the dishwasher and heat water overnight or in the middle of the day, cheap off-peak windows can beat a flat rate — this is the engine behind cheap overnight EV charging. The saving is conditional on actually shifting the load, not just owning the plan.
Battery & solar households
A battery charges when power is cheap or the sun is out and discharges through the expensive evening peak — it effectively arbitrages a time-of-use tariff for you. Solar households on VPPs or catching free-power windows also lean on time-based pricing to come out ahead.
Can't-shift households
If your usage structurally lands on weekday evenings — young kids, shift work, electric heating you can't retime — peak rates hit exactly when you live. For this pattern a flat rate is often the safer structure, and asking for one back is a legitimate, boring, free fix.
Switched without asking?
Your four moves, in order.
All four are free. Most people only need the first two.
- 1. Ask your retailer directly. One call or email: "Has my tariff structure changed since the meter exchange? When, on what authority, and what notice was I given?" If the change happened inside the two-year protection window without your explicit informed consent, say so — and ask to be put back.
- 2. Ask for a flat-rate plan. Most retailers still sell single-rate market plans, and the smart meter rule lets governments require designated retailers to offer flat tariff options. A retailer can decline a specific plan, but you are never captive to a structure you didn't choose — someone in your area will sell you a flat rate.
- 3. Compare and switch. Use the government comparison sites — they're free and don't take commissions: Energy Made Easy (AER, for NSW, QLD, SA, TAS and the ACT) or Victorian Energy Compare in Victoria. Compare on your own usage data, which your smart meter now conveniently records.
- 4. Escalate if the answers don't stack up. If you believe you were switched without proper consent or notice and your retailer won't resolve it, your state's energy and water ombudsman handles exactly this kind of dispute, free of charge. Keep the meter-exchange notice and your bills as your paper trail.
And if the comparison exercise makes your head spin, that's normal — tariff structures are genuinely confusing, and that's not your fault. Our tariff explainer exists to make the structures legible before you pick one.
Where we stand —
and what we sell.
Full disclosure, because this page would be incomplete without it.
Yes, smart meters are good for our business. We sell solar, batteries and EV chargers, and every one of them works better — sometimes only works at all — with a smart meter behind it: export metering, battery scheduling, VPP participation, free-power windows. So we're not neutral on the rollout, and you should know that. But here's the part that matters: nothing on this page requires buying anything from us or anyone else. Checking your bill is free. Asking for a flat-rate plan is free. Switching retailers is free. If your tariff was switched and it doesn't suit how you live, the fix is a phone call — not a purchase. Where our products do become relevant is the flip side: if you look at your smart meter data and decide time-based pricing could actually work in your favour, a battery or a smarter EV charging setup is how households lean into it — and that's a conversation to have on the numbers, not the fear. Browse all our guides at the Honest Guides hub, including the ones that conclude "don't buy."
Smart meters & tariff switches
— your questions, answered.
Not silently — at least not for two years, in most of the eastern states. Under national rules that commenced on 1 December 2025, the retailer that installed your smart meter cannot change your retail tariff structure — for example from a flat rate to time-of-use or demand pricing — for two years after the installation unless you give explicit informed consent. That consent has to be genuinely informed: the retailer must clearly disclose what the change means for you before you agree. Two important limits. First, the protection sits with the retailer that installed the meter — if you switch retailers afterwards, the new retailer is not bound by it. Second, the rules commenced on 1 December 2025, so if your meter was exchanged before then, the older notice rules applied instead — check the notices your retailer sent at the time. Victoria runs its own retail rules through the Essential Services Commission, so Victorian protections differ. When in doubt, read your latest bill line by line and ask your retailer directly: has my tariff structure changed since the meter swap, and on what authority?
Read your first full bill after the exchange line by line and compare it with an old one. Three things give the switch away. First, the tariff or plan name — look for words like time of use, flexible pricing, peak/off-peak or demand where your old bill said general usage, single rate or anytime. Second, the usage table — a flat-rate bill shows one rate in cents per kilowatt-hour; a time-of-use bill splits usage into peak, shoulder and off-peak rows at different rates. Third, a demand line — a charge measured in kilowatts (kW) rather than kilowatt-hours, sometimes labelled demand or capacity, means a demand tariff. Note that your network tariff can also be reassigned separately from your retail plan, and that may only show in the fine print or your retailer's pricing schedule. If anything changed and you didn't agree to it, ask your retailer in writing when the change was made, on what authority, and what notice they gave you — and escalate to your state's energy ombudsman if the answer doesn't stack up.
Usually, yes — and asking costs nothing. Most retailers still sell flat-rate (single-rate) market plans in the eastern states, and the AEMC's smart meter rule package also includes a provision enabling governments to require designated retailers to offer flat tariff options to customers with smart meters. You have two levers. One: ask your current retailer to move you to a flat-rate plan — and if you were switched inside the two-year protection window without giving explicit informed consent, say so plainly. Two: compare and switch retailers using the government comparison sites — Energy Made Easy (energymadeeasy.gov.au) for most eastern states, or Victorian Energy Compare (compare.energy.vic.gov.au) in Victoria. An individual retailer can decline to offer you a particular plan, but with dozens of retailers competing, someone in your area will almost always sell a flat rate. One honest trade-off before you switch back: some households — EV owners, battery owners and genuine load-shifters — can come out ahead on time-of-use, so check which structure actually suits your usage pattern first.
A demand charge bills you on your single highest half-hour of usage in the period, measured in kilowatts — not on how much energy you used overall. In winter that combination can bite. Come home at 6pm and the reverse-cycle heating, oven, dryer and hot water can all overlap in one half-hour. On a typical demand tariff, that one peak sets the demand charge for the whole billing period — the peak figure is multiplied across every day of the month, even if every other evening was modest. That's why some households see a bill jump after a meter swap without using any more energy overall. If you're on a demand tariff, the fix is spreading big appliances out so they don't stack inside the peak window; if that doesn't match how your household actually lives, a flat-rate or standard time-of-use plan may be the safer structure. Exact demand windows, rates and calculation methods vary by network and retailer, so check your own plan's terms — and see our time-of-use vs flat vs demand guide for the full maths.
Mostly no — because Victoria already did its rollout. Victorian homes received smart meters under a state program completed more than a decade ago, so the 2025–2030 national exchange wave is aimed at the other eastern states, and the AER's smart meter consumer rights guidance applies to Queensland, New South Wales, South Australia, Tasmania and the ACT. The national two-year consent protection sits in the National Energy Retail Rules, which Victoria has not adopted — Victorian retail protections are set separately by the Essential Services Commission of Victoria under its Energy Retail Code of Practice, which has its own notice and consent requirements for plan changes. If you're in Victoria and your bill structure changed, check the notice your retailer sent, compare plans on Victorian Energy Compare (compare.energy.vic.gov.au), and take unresolved disputes to the Energy and Water Ombudsman (Victoria).
No — the meter is the good part. A smart meter is read remotely, which means no more estimated reads or manual meter-read visits, faster outage detection, and access to better data about your own usage. It's also effectively required for the things that genuinely cut bills: solar with proper export metering, home batteries, virtual power plant participation and free-power windows like Solar Sharer. Refusing the meter mostly just delays the inevitable — the AEMC's rule targets smart meters for effectively all customers by 2030 — and locks you out of the useful stuff in the meantime. The thing to watch isn't the hardware; it's the plan that can ride along with it — a tariff structure change you didn't ask for. So the honest advice is: take the meter, then check the tariff on your next bill. Our companion guide covers whether you can refuse a smart meter and what actually happens if you try.
Where these rules come from.
Regulatory details on this page are drawn from official primary sources and were current as at July 2026. Retail rules and regulator guidance get amended — confirm at the source, and against the notice your own retailer sent, before relying on any date or protection here.
- AEMC — Accelerating smart meter deployment (final rule made 28 Nov 2024; staged commencement Dec 2024 – Jul 2026; universal deployment by 2030)
- AEMC — media release, 28 Nov 2024 (two-year explicit-informed-consent protection; historical bill comparisons; flat-tariff-offer provision)
- AER — Consumer rights and smart meters (two-year tariff-structure protection from 1 Dec 2025; retailer-switch caveat; applies in QLD, NSW, SA, TAS & ACT)
- AER — Smart meter rollout hub (retailer notice obligations and current guidance)
- Essential Services Commission of Victoria (Victorian retail rules — Energy Retail Code of Practice)
- Energy Made Easy — the AER's free government plan-comparison site · Victorian Energy Compare