Every electricity connection point in Australia’s National Electricity Market (NEM) carries a metering installation type. The number looks like a technical footnote. It actually classifies the meter based on how accurate it must be, how often the data arrives and whether that data can be used for market settlement.
The scale runs from Type 1 at the largest generators and transmission connections down to Type 9 at a kerbside charger or a streetlight. Two of these categories are brand new. If you manage energy for a council, a data centre, an embedded network or an industrial site, the classification is worth understanding before your electrical design is locked in.
Key Points
A metering installation type classifies the entire installation by annual energy volume, data capability, reading method and market purpose. It is not a description of a meter model.
Types 1 to 4 are remotely read interval installations. Type 1 sits above 1,000 GWh a year while Type 4 covers everything below 750 MWh.
Types 5 and 6 are legacy arrangements read by a technician. Retailers and Metering Coordinators must replace them with Type 4 smart meters by 1 December 2030.
Type 7 applies where nothing is physically measured. Consumption is calculated from an approved load table instead.
Type 9 has covered street furniture since 31 May 2026 while Type 8 supports secondary settlement points from 1 November 2026. Both came from the same 2024 rule change.
SATEC supplies NMI M 6-1 pattern approved meters and the Expertpower platform, giving Australian sites the measurement quality and data visibility these categories now assume.
Why The Classification Matters
The type sets the accuracy class, the communications requirement, the reading frequency and the validation obligations that follow the installation for its whole life. It also allocates roles. A Metering Coordinator, a Metering Provider and a Metering Data Provider all attach to the connection point once the classification is settled.
Here is the part that catches people out. The classification covers the complete installation and not just the meter in the switchboard. Current transformers, voltage transformers, communications equipment, data services and the validation process are all in scope. A compliant meter installed with the wrong current transformer class does not produce a compliant installation.
The Remotely Read Interval Types: 1 To 4
These four categories share a common expectation. Interval data is recorded on site then collected remotely, which is what makes time of use tariffs, import and export measurement and market settlement possible.
Type 1: The Largest Connection Points
Type 1 applies where annual energy exceeds 1,000 GWh. Think major generators, transmission connections and a very small group of exceptionally large industrial operations.
Requirements are the most demanding in the framework. Check metering is mandatory and the accuracy, redundancy and data availability obligations reflect the settlement value flowing through the point.
Type 2: Very Large Energy Users
Type 2 covers annual energy between 100 GWh and 1,000 GWh. Large generators, heavy industry and major infrastructure sit here.
Partial check metering applies at this level. Reliable remote communications matter just as much as meter accuracy because a settlement dispute at this scale is expensive.
Type 3: Large Commercial And Industrial Sites
Type 3 runs from 0.75 GWh up to less than 100 GWh a year. Factories, hospitals, universities, shopping centres and data centres commonly fall into this band.
Current transformer connected metering is normal here because the load exceeds what a direct connected meter can handle. Class 0.5 current transformers are the minimum, which is why the CT specification deserves attention early rather than at commissioning.
Type 4 And Type 4A: Modern Smart Meters
Type 4 is the category most people mean when they say smart meter. It applies below 750 MWh a year and covers homes, small business, commercial tenancies and smaller industrial connections.
Type 4A is the exception worth knowing. It is a small customer interval meter without active remote acquisition, subject to jurisdictional volume thresholds, and the data is collected manually. The meter records intervals but nobody is polling it overnight.
The Legacy And Calculated Types: 5, 6 And 7
Type 5: Manually Read Interval Data
A Type 5 installation records interval consumption then waits for someone to come and collect it. The Type 5 accumulation boundary is 750 MWh a year.
These arrangements sit awkwardly between old and new. You get interval detail without the operational benefit of daily data, which is a poor trade for any site trying to manage demand.
Type 6: Basic Accumulation Meters
Type 6 records a single total. Spinning disc meters and simple electronic meters belong here.
They cannot tell you when energy was used, only how much. Under the accelerated rollout, Type 5 and Type 6 installations must be replaced with Type 4 smart meters by 1 December 2030. Type 5 meters already capable of remote acquisition are excluded from the legacy definition.
Type 7: Unmetered Loads
Type 7 applies where no meter measures the connection at all. Consumption is calculated using the NEM Load Table or an approved inventory value based on rated load and assumed operating hours.
Public lighting is the classic example. Traffic signals in New South Wales and South Australia are also covered, along with telecommunications equipment and similar predictable loads.
The weakness is obvious once you look at a modern asset. A calculated figure cannot detect a faulty luminaire, an unauthorised connection or a load that no longer matches its assumed profile.
The New Types: 8 And 9
Both categories came from the AEMC final rule on unlocking consumer energy resource benefits through flexible trading, made on 15 August 2024. AEMO delivered them in two releases.
Type 8: Secondary Settlement Points
Type 8 allows an eligible resource behind the primary connection to be measured and settled separately in the market. Batteries, EV chargers, solar generation and controllable loads are the intended candidates.
Type 8A applies to large customers while Type 8B applies to small customers. A small customer’s primary connection point must be Type 4 and a Type 8B installation cannot itself host a secondary settlement point. Large customers can engage a second financially responsible market participant at the same premises while small customers keep a single retailer.
This is not an ordinary submeter. A secondary settlement point carries its own National Metering Identifier, defined market roles including the new NMI Service Provider, and full data obligations. Network charges continue to be allocated at the primary connection point. The arrangements commence on 1 November 2026 and participation is entirely voluntary.
Type 9: Street Furniture
Type 9 commenced on 31 May 2026 and covers street furniture with annual energy below 750 MWh. Kerbside EV chargers, parking meters, CCTV poles, smart bus shelters and public lighting are the target assets.
Approved in built measurement can be used instead of an external revenue meter, and the minimum specification set by AEMO is lower than a Type 4 smart meter. That was deliberate. Fitting a full smart meter to every bollard was never going to be economic for councils.
Two Meter Installation Type Codes support the category. COMMS9 covers a single device while COMMS9CM covers multiple devices reporting through a Central Management System, which lets a lighting network report measured energy in place of an estimated Type 7 value.
For councils sitting on decades of calculated public lighting charges, that shift from estimate to measurement is the genuinely interesting part of this reform.
NEM Metering Installation Types Compared
| Type | Annual Energy Volume | Data Recorded | How Data Is Collected | Typical Australian Application |
|---|---|---|---|---|
| Type 1 | Above 1,000 GWh | Interval | Remote, check metering required | Major generators and transmission connections |
| Type 2 | 100 GWh to 1,000 GWh | Interval | Remote, partial check metering | Large generators and heavy industry |
| Type 3 | 0.75 GWh to less than 100 GWh | Interval | Remote, CT connected | Data centres, hospitals, factories, large retail |
| Type 4 | Less than 750 MWh | Interval | Remote | Homes, small business, commercial tenancies |
| Type 4A | Less than 750 MWh | Interval | Manual, no active remote acquisition | Small customer sites without communications |
| Type 5 | Less than 750 MWh | Interval | Manual retrieval on site | Legacy commercial sites awaiting upgrade |
| Type 6 | Less than 750 MWh | Accumulated total only | Manual meter read | Legacy homes and small business |
| Type 7 | Not applicable | Calculated, not measured | NEM Load Table or inventory value | Public lighting, traffic signals, telecoms cabinets |
| Type 8A | Set by customer classification | Interval | Remote, separate NMI | Large customer batteries, EV charging, controllable load |
| Type 8B | Set by customer classification | Interval | Remote, separate NMI | Small customer flexible resources |
| Type 9 | Less than 750 MWh | Interval or approved in built measurement | Remote, single device or Central Management System | Kerbside EV chargers, parking meters, smart poles, lighting |
Selecting The Appropriate Metering Arrangement
Classification depends on expected consumption, connection design, customer category, communications availability, asset type and market purpose. A single site can involve more than one type once batteries and public charging enter the picture.
Timing is the practical lesson. Metering decided after the switchboard is built is metering decided badly. Space for current transformers, cable routes to the meter position, communications coverage and a sensible metering panel location all cost very little at design stage and a great deal afterwards.
Large loads, secondary settlement points and public infrastructure all warrant an early conversation with the Metering Coordinator. That conversation is also where the classification is confirmed, because it is a market decision rather than a product decision.
Where SATEC Fits
Metering hardware and energy data systems for commercial, industrial, embedded network and infrastructure sites are our core business in Australia. Our role sits in the measurement and data layer rather than in the market roles that own the classification.
The EM133-XM is NMI M 6-1 pattern approved at Class 0.5S, with interval logging, four quadrant measurement, time of use registers and flexible communications. Import and export measurement is handled natively, which matters on any site with solar or storage behind the meter.
For sites with many circuits, the BFM136 is also NMI M 6-1 pattern approved and monitors up to 36 single phase circuits or 12 three phase circuits using HACS current sensors. Crowded switchboards and multi tenant buildings are its natural home.
Expertpower then collects, validates and analyses that data across a single site or an entire portfolio, supporting interval management, reporting, billing integration and virtual metering.
One caution we give every customer. Pattern approval is a starting point and not a guarantee that a given meter satisfies a specific NEM classification. Final product selection and installation design must be confirmed with the Metering Coordinator and the other responsible market participants.
Talk To Us Before The Design Is Locked In
If you are planning a large load, an embedded network, a public charging rollout or a battery installation, get the metering questions on the table early. Contact the SATEC Australia team for a discussion about measurement accuracy, interval data and how Expertpower can support your reporting and billing requirements.
FAQs - NEM Metering Installation Types Explained
Is a Type 4 meter the same thing as a smart meter?
In everyday language yes, because Type 4 is the remotely read interval category that applies below 750 MWh a year. Type 4A is the exception, since it records intervals but has no active remote communications and is read manually.
What happens to my old accumulation meter?
Legacy Type 5 and Type 6 installations must be replaced with Type 4 smart meters by 1 December 2030 under the accelerated rollout. Type 5 meters that are already capable of remote acquisition are excluded from the legacy definition.
Do I have to establish a secondary settlement point if I own a battery?
No. Participation in the Flexible Trading Arrangements is voluntary and no business is required to create a secondary settlement point simply because it owns flexible equipment. The arrangements commence on 1 November 2026 for those who choose to use them.
Can a council use Type 9 metering for existing public lighting?
Yes, and that is one of the main reasons the category exists. Type 9 commenced on 31 May 2026 and a Central Management System arrangement can report measured energy in place of an estimated Type 7 value, subject to AEMO requirements and the responsibilities of the relevant market participants.
