Australia's flexible trading rules start on 1 November: a household gets a second meter, not a second retailer

The Australian Energy Market Commission's rule change Unlocking CER benefits through flexible trading (ERC0346, final determination 15 August 2024) commences Schedules 3, 4 and 5 on 1 November 2026. From that date a flexible consumer energy resource sitting behind an existing connection point, a household battery, an EV charger, a smart hot water system, can be separately metered and settled in the National Electricity Market, apart from the passive load of the premises.

What it does not do, for a household, is separate the asset from the retailer. The rule creates secondary settlement points for both customer classes, but only large customers may use one to engage a second financially responsible market participant at the same premises. For small customers, meaning households and small businesses, the secondary settlement point operates under the same FRMP as the primary connection point. The battery gets its own identity in the market; the household keeps one retailer.

The mechanics are worth stating precisely, because they are the part that outlasts any later policy change. A secondary settlement point gives a premises a second National Metering Identifier without a new physical connection, sitting behind the parent NMI much as a child NMI sits inside an embedded network. A new role, the NMI Service Provider, creates, links and maintains those NMIs and their standing data in MSATS. The AEMC made that role contestable and accredited, comparable to an Embedded Network Manager, rather than a function of the distribution network service provider. Behind the primary meter, a Type 8 metering installation measures the flexible resource, and settlement is subtractive against the parent point.

Commencement is staged. Schedules 1 and 6 took effect on 29 August 2024. Schedule 2 commenced on 31 May 2026, covering in-built metering at primary connection points under Type 9 installations, which brings assets that were previously unmetered altogether, kerbside EV chargers and smart streetlights among them, into the market without a separate meter. Schedules 3, 4 and 5, carrying secondary settlement points, Type 8 meters and the NMI Service Provider role, follow on 1 November 2026. Participation is voluntary throughout. The AEMC put the benefit of the in-built metering arrangements alone at up to 100 million Australian dollars over twenty years, on analysis by Energeia. [UNVERIFIED: that the 1 November 2026 date has not moved, and that the 31 May 2026 release was delivered. AEMO's programme page returned HTTP 403 and was not read; its MSATS technical specification for November 2026 was last modified on 31 July 2026 and carries no notice of a change.]

Why it matters. FERC Order 2222 and the frameworks that followed it opened wholesale markets to aggregations of small resources and left the meter alone. This opens the meter. That is a real structural change and a rare one: the asset acquires its own market identity, its own metering type, its own settlement method, and a contestable class of service provider now exists to keep the records straight. Measurement, in this reform, stops being a property of the premises and becomes a property of the device.

The restriction is where the interest lies. Every piece of that plumbing is indifferent to customer class. A Type 8 meter does not know whether it is in a warehouse or a garage; a secondary NMI is a secondary NMI; the NMI Service Provider role was made contestable and accredited precisely so that it would scale beyond a handful of industrial sites. The single-retailer rule for small customers is a policy choice laid on top of infrastructure that would carry the other answer without modification. That is a considerably easier thing to revisit than it would have been to build, and it means the Australian argument over the next few years is not a technical one about metering. It is about whether a household is permitted to contract separately for its flexibility, with the technical objection already answered and paid for.

It also sets the honest expectation for the coverage that will appear around 1 November. Describing this as unbundling the household connection point, which is the natural summary and very likely the popular one, overstates what commences. Unbundled measurement commences. Unbundled retail does not, for a household. Every virtual power plant business model aimed at Australian homes still runs through the incumbent retailer's cooperation, which is the structural reason so many of them are utility programmes rather than markets, in Australia as elsewhere.

The large-customer case is the control. A commercial or industrial site can, from 1 November, put its flexible load under one market participant and its passive load under another, at the same premises, with no new connection. Whatever objection exists to a household doing the same thing, it is not that the market systems cannot represent it, because from that date they demonstrably can.

What is still unknown.

How many NMI Service Providers will actually be accredited and operating on 1 November, as opposed to entitled to be. [NEEDS DATA: count of accredited NMI Service Providers at commencement.]

What a secondary settlement point costs a household in metering hardware and standing charges, and who pays. [NEEDS DATA: expected cost per secondary settlement point for a small customer.]

Whether an existing smart meter can be reconfigured, or whether every participating premises needs a second physical device.

Whether the AEMC or AEMO has scheduled any review of the single-FRMP restriction for small customers, or whether it stands indefinitely.

Sources.

AEMC, Unlocking CER benefits through flexible trading (ERC0346): https://www.aemc.gov.au/rule-changes/unlocking-CER-benefits-through-flexible-trading

AEMO, MSATS technical specification, Flexible Trading Arrangements, November 2026: https://tech-specs.docs.public.aemo.com.au/Content/TSP_MSATS_Oct2026/Flexible_Trading_Arrangements.htm

ENM Solutions, Secondary Settlement Points and the NMI Service Provider: https://www.enmsolutions.com.au/industry-insight/secondary-settlement-points-and-the-nmi-service-provider-what-when

King and Wood Mallesons, New AEMC rules to support consumer energy resources: https://pulse.kwm.com/energy-2/new-aemc-rules-to-support-consumer-energy-resources/

AER Regulatory Sandbox, Unlocking CER benefits through flexible trading rule change, final determination: https://www.energyinnovationtoolkit.gov.au/article/regulatory-changes/unlocking-cer-benefits-through-flexible-trading-rule-change-final