The reference price is a yardstick, not a guarantee

The short answer

What the reference price actually is

The reference price is the single regulated number every electricity plan in your area is measured against. In most of the country it is the Default Market Offer, or DMO, set by the Australian Energy Regulator. In Victoria it is the Victorian Default Offer, or VDO, set by the Essential Services Commission. Here is the part the ads never explain: the reference price is a yardstick for comparing plans and a cap on lazy default offers, it is not a cap on what a market plan can charge you. Read it the right way and "20% less than the reference price" tells you something real. Read it the wrong way and it is just marketing.

Here is the core takeaway in one line: the reference price is a regulated benchmark that caps the default (standing) offer and standardises advertising, so every plan can be quoted as a percentage above or below one comparable number, but it does not cap what a market plan can charge you. The common assumption is that the reference price is a price guarantee, a ceiling on your bill. It is not. It protects customers who never chose a plan and sit on the default, and it makes offers comparable on a single figure. It does nothing to stop you signing up to a market plan priced above it. Understand that and you read the "% below reference price" labels for what they are.

The blind spot

Why most reference-price explainers leave you worse off

Most articles about the DMO and VDO do the same three things, and each one quietly misleads readers.

First, they describe the reference price as a cap on your bill. It is not. It caps the standing (default) offer only. Market offers, the plans almost everyone actively chooses, can be priced above the reference price, and a "great deal" headline can still sit above the benchmark on the small print.

Second, they quote the percentage as if it were fixed. They tell you a plan is "20% below the reference price" without saying that the reference price resets every year. The discount is measured against a base that moves, so the same plan can shrink to a smaller discount next year even if your rates never changed.

Third, they treat the percentage as comparable everywhere. Because each distribution zone has its own reference price, "20% below" in Sydney and "20% below" in Adelaide are different dollar figures. A good explainer says plainly when the percentage is comparable, within a zone, and when it is meaningless, across zones.

How the benchmark actually works

Expert analysis: the machinery behind the reference price

Who sets it, and in which state

There is no single national reference price. In New South Wales, South Australia and south-east Queensland the Australian Energy Regulator sets the Default Market Offer (DMO). In Victoria the Essential Services Commission sets the Victorian Default Offer (VDO). The ACT uses a price set by the Independent Competition and Regulatory Commission (ICRC). Tasmania uses the Office of the Tasmanian Economic Regulator (OTTER) standing offer. Regional Queensland uses notified prices from the Queensland Competition Authority (QCA). Each is the same idea wearing a different regulator's badge: one benchmark per zone.

What it caps, and what it does not

This is the heart of it. The reference price is a cap on the standing (default) offer, the plan a retailer must give a customer who never chose anything. A retailer cannot charge a default customer more than the DMO or VDO. It is not a cap on market offers. Retailers can and do sell market plans priced above the reference price, often with extra features or short-lived sign-up rates. So the benchmark protects passive default customers and standardises advertising; it does nothing to stop you choosing a market plan that costs more than the default cap.

How to read "X% less than the reference price"

The label means the plan is advertised at that percentage below the benchmark for your zone, on a defined annual usage. Two traps. First, the annual reset: the DMO is recalculated for the new financial year and applies from 1 July, while the VDO resets each 1 January, so a 20% discount this year is measured against a different base next year. Second, conditional versus unconditional discounts: an unconditional discount is baked into the rate, but a conditional one (pay on time, direct debit) vanishes if you miss the condition, leaving you much closer to the reference price than the headline promised.

Comparable within a zone, not across zones

Because two retailers serving the same area are quoted against the same reference price, the percentages are genuinely comparable: "15% below" beats "10% below" in your zone, full stop. But the percentage is not comparable across different distribution zones, because each zone has its own reference price. "20% below" in one city is a different number of dollars from "20% below" in another. The percentage is only meaningful against the same base, which is exactly why it is built around one benchmark per zone.

What this means for real households

How misreading the reference price costs you money

The example above is not academic. It is exactly how households make the wrong call:

They treat the benchmark as a ceiling

A household assumes that because there is a reference price, no plan can charge more than it, so they pick a market plan on features alone. But market offers can sit above the reference price, and a plan with a generous-sounding sign-up rate can quietly cost more than the regulated default they were trying to beat.

They chase a percentage that resets underneath them

A plan chosen because it was "20% below the reference price" can become a worse deal a year later. The benchmark reset, the discount shrank against the new base, and the household never noticed because their c/kWh rate looked unchanged. The percentage moved even though their plan did not.

They get caught by a conditional discount

The headline says "25% below the reference price", but most of that is a pay-on-time discount. Miss one due date and the saving collapses toward the benchmark. Households who never check whether a discount is conditional or unconditional are the ones most surprised by the bill.

They compare percentages across different zones

Someone moving from Adelaide to Sydney assumes "20% below the reference price" means the same dollars in both. It does not: each zone has its own reference price, so the percentage is comparable only within a zone, never across the move.

The insider insight

The reference price is a comparison tool, not a protection tool

Here is the shift in thinking that changes how you shop. The reference price was introduced mainly to kill confusing, made-up "discounts" off inflated base rates. Before it existed, "50% off" meant nothing because every retailer used a different starting price. The benchmark forced everyone onto one ruler. That makes it a brilliant comparison tool. What it is not is a protection tool for the plan you actively choose.

So the practical lesson is simple: trust the percentage to rank plans in your zone, never to guarantee a price. The reference price standardises the question; it does not answer it for you.

The bottom line

Why this matters right now

With the 2026-27 reference prices landing (the VDO from 1 January and the DMO from 1 July), every retailer is about to re-quote its "% below the reference price" against a new base. That is exactly the moment a plan you were happy with last year can quietly turn into a worse deal, not because your rate changed, but because the benchmark did. So treat the reference price as what it is: a ruler that lets you rank plans fairly within your own zone, and a cap on the default offer, not a guarantee on the market plan you choose. Compare the "% below" figures in your zone, read the small print for conditional discounts and the reset date, and confirm your chosen plan really sits below the reference price. That is how you turn the benchmark into a smaller bill, in the states where it applies.