Most guides to the types of electricity meters in Australia begin with a list: accumulation, interval, smart and so on down the page. That is useful for understanding the technology and almost useless for specifying it, because the list cannot tell you which meter your project needs.
This guide works the other way around. It starts with the job the readings have to do, whether that is billing tenants, allocating costs across a site, measuring solar export or proving power quality, and follows each application through to the meter type, accuracy class and approval it demands.
The meter-type reference is still here for anyone who wants it, but it now sits where it belongs: after the decision, not in place of one.
Key Points
Meter selection starts with the application, not the catalogue: what the readings must do determines the meter type, the accuracy class and the approvals it needs.
If bills will ever be raised from the readings, the meter must be NMI pattern approved. Accuracy alone is not enough and this is the most expensive detail to get wrong.
High tenancy counts do not require a wall of meters: multi-circuit devices such as the SATEC BFM136 meter dozens of tenancies from a single enclosure.
On CT-connected supplies the meter is only half the specification: the CT ratio, class and burden decide whether the installed accuracy matches the nameplate.
Consumption meters count energy; power quality analysers prove performance. If you may ever need to defend a measurement in a dispute, specify Class A (IEC 61000-4-30).
The rules keep moving: smart meter rollout is accelerating towards 2030 and since 31 May 2026, Type 9 arrangements let streetlights, CCTV and kerbside EV chargers settle on their own in-built measurement.
Start With the Job, Not the Meter
If you are specifying a meter for an Australian site, the product catalogue is the wrong place to start. Two meters can look identical on a datasheet and behave identically on the bench, yet one can lawfully raise a tenant’s bill and the other cannot. The difference is not the hardware. It is the job you are asking the readings to do.
So before comparing models, answer five questions about the application:
- Will anyone be billed from the readings? If yes, the meter is legally a measuring instrument and must hold NMI pattern approval.
- How many points need measuring? One incoming supply is a different problem from 36 tenancies behind one switchboard.
- Is the supply direct-connected or CT-connected? Above direct-connection ratings, the current transformers become part of the accuracy chain.
- Does energy flow one way or two? Solar, batteries and EV infrastructure need import and export measured separately.
- Do you need to count energy, or prove performance? Billing and monitoring need consumption data; disputes and compliance need evidence-grade power quality measurement.
Work through those five answers and the meter type usually chooses itself. The rest of this guide walks through the most common Australian applications and the specification each one actually demands.
Billing Tenants in Apartments, Mixed-Use Buildings and Embedded Networks
What the job demands.
Bills raised from the readings, which makes pattern approval under NMI M 6-1 non-negotiable; interval data so time-of-use tariffs can be passed through fairly; and a way to scale across many tenancies without consuming an entire riser cupboard.
The meter it points to.
An NMI pattern-approved interval sub-meter. Where tenancy counts are high, a multi-circuit device changes the economics entirely: the SATEC BFM136 measures up to 36 billing points from a single enclosure, so one cabinet does the work of a wall of individual meters. Pair the metering with a billing platform such as Expertpower and the readings become tenant invoices rather than a spreadsheet exercise.
If you manage rental property and want the fuller picture on sub-metering and on-charging, our landlord’s guide to electricity sub-meters covers the billing rules in detail, and the NMI Approved Meters page lists the approved options.
Revenue Metering on a CT-Connected Supply
What the job demands.
Larger commercial and industrial supplies exceed direct-connection ratings, so the meter reads through current transformers. That makes accuracy a chain: the meter’s class, the CT’s class, the ratio selection and the burden all have to hold together and the weakest link sets the installed accuracy.
Where tenanted or lightly loaded circuits are involved, Class 0.5S matters because the S denotes accuracy at low load, which is exactly where tenanted sites spend most of their time.
The meter it points to.
A CT-connected, pattern-approved meter such as the SATEC EM133-XM (Class 0.5S). Treat the CT selection as part of the meter decision, not an afterthought for the switchboard builder: our guide to CT meter accuracy explains how ratio and burden choices flow through to the bill.
Cost Allocation and Energy Management Without Billing
What the job demands.
Interval visibility by floor, department, plant item or tenancy so costs can be allocated, waste found and upgrades justified. No bills are raised from the readings, so pattern approval is not legally required.
The meter it points to.
Interval power meters and sub-meters selected on measurement need rather than approval, such as the SATEC PM130 PLUS and PM135 families, feeding a reporting layer like Expertpower.
One caution from experience: if there is any chance the site will later on-charge tenants from these readings, specify approved meters now. The price difference at installation is small; replacing unapproved meters across a building once billing starts is not.
Solar, Batteries and Anything That Exports
What the job demands.
Bi-directional measurement, so energy imported from the grid and energy exported to it are recorded separately, plus interval data to make sense of self-consumption and time-of-use plans. Export readings drive feed-in credits, so accuracy in both directions matters, and where export is billed or settled, approval requirements follow.
The meter it points to.
An import/export (bi-directional) interval meter, specified with the accuracy class and approval the commercial arrangement requires. Our solar export metering guide covers the accuracy and approval side for installers and system designers.
Sites That Must Prove Power Quality, Not Just Count Kilowatt-Hours
What the job demands.
Hospitals, data centres, manufacturers and utilities eventually face a question no consumption meter can answer: what exactly happened on the network, and can you prove it? Sags, swells, harmonics and transients damage equipment and trigger disputes, and in a dispute, provable measurement wins. That means Class A performance under IEC 61000-4-30, so two instruments measuring the same event report the same result.
The meter it points to. A dedicated Class A power quality analyser rather than a billing meter with extra features. SATEC’s PM180 and PRO Series instruments combine Class A power quality analysis with fault recording for exactly this evidence-grade role.
Streetlights, CCTV, Kerbside EV Chargers and Other Street Furniture
What the job demands.
Small distributed loads that were historically unmetered and billed on estimates. Since 31 May 2026, Type 9 metering arrangements allow devices with compliant in-built measurement capability to settle on their own readings, which changes the economics for councils and infrastructure operators managing hundreds of small connection points.
The meter it points to.
Assets with compliant in-built measurement, specified alongside your metering coordinator. Our guide to the NEM metering installation types explains where Type 9 sits among Types 1 to 9 and what it changes.
The Meter Types, In Brief
For reference, the technology families behind all of the applications above:
- An accumulation meter records total kilowatt-hours with no time breakdown; it suits only flat tariffs and cannot support solar export or time-of-use billing.
- An interval meter records consumption in blocks, typically 5 to 30 minutes, which is the foundation for modern tariffs and load analysis.
- A smart meter is an interval meter with two-way communications for remote reading and richer functionality; under the accelerated national rollout that began in December 2025, most homes and small businesses will have one by 2030.
- Single-phase meters serve standard homes and small tenancies.
- Three-phase meters serve larger homes, commercial premises and any site with three-phase plant.
- Import/export meters measure energy in both directions for solar and storage.
- Sub-meters sit behind the main connection point to measure individual tenancies, floors or equipment.
- Power quality analysers measure how well the electricity performs rather than how much is used.
A Word on Approvals: Accurate Is Not the Same as Approved
The most common specification mistake we see is treating accuracy as the whole story. For billing, it is not. A meter used to raise bills in Australia must hold NMI pattern approval and approval is a property of the specific pattern, verified by certificate on the national register at industry.gov.au.
It does not transfer to a lookalike model and it is not implied by a good accuracy class. If a meter will ever bill anyone, check the approval first and the datasheet second. SATEC’s pattern approvals can be verified directly on the register and our NMI approvals page explains how to check any meter’s status in a few minutes.
Specification Summary by Application
| Application | What the Job Demands | Meter Type | Approval / Class | SATEC Option |
|---|---|---|---|---|
| Tenant billing (strata, embedded networks) | Bills raised from readings; many tenancies | NMI pattern-approved interval sub-meter | NMI M 6-1 pattern approval | BFM136 (36 points), EM133 family, with Expertpower billing |
| CT-connected revenue metering | Accuracy held across meter + CT chain | CT-connected approved meter | Pattern approval; Class 0.5S | EM133-XM |
| Monitoring and cost allocation (no billing) | Interval data by area, plant or tenancy | Interval power meter / sub-meter | Selected on measurement need | PM130 PLUS, PM135, with Expertpower reporting |
| Solar, batteries, export | Import and export measured separately | Bi-directional interval meter | Export accuracy; approval where settled | NMI-approved bi-directional options |
| Power quality evidence | Provable measurement of PQ events | Class A power quality analyser | IEC 61000-4-30 Class A | PM180, PRO Series |
| Street furniture and kerbside EV (Type 9) | Settlement from in-built measurement | Compliant in-built measurement | Type 9 arrangements (live 31 May 2026) | Speak to us and your metering coordinator |
Choosing Well
No single meter type suits every site, but every site’s requirements point clearly at one. Confirm what you have (single or three-phase, direct or CT-connected, accumulation or interval), decide what the readings must do (bill, allocate, export, prove), and specify to that job, including the approval it carries with it.
If you would like a second opinion on a specification, or you are staring at a switchboard wondering which of these applications you actually have, talk to us. Matching Australian sites to the right metering is what we do all day.
