I’m Joe from Smarta Switch in Brisbane. Ask three different people in the energy industry where the “large customer” line sits and you can get three different answers that are all correct, because it isn’t one number for the whole country. It’s set state by state. Get it wrong and you’ll either shop your business off a rate card that was never built for you, or miss protections you’re actually entitled to. Here’s the real breakdown, state by state.
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The short answer: it depends which state you’re in
- Queensland, New South Wales and the ACT: the line sits at 100 MWh a year.
- South Australia: the line sits higher, at 160 MWh a year.
- Victoria: doesn’t use a single cut-off. It’s tiered: 40 MWh a year is the first marker, with a further band running up to 160 MWh before a site is treated as fully “large”.
- Tasmania: sets its own threshold separately, gazetted on its own schedule rather than mirroring the mainland states.
- Western Australia and the Northern Territory: sit outside the National Electricity Market entirely, with their own separate arrangements.
Same idea everywhere (protect the customers who can’t easily negotiate for themselves, leave the big ones to negotiate their own deal), five different rulebooks. If your business only operates in one state, you only need to remember one number. If you run sites in more than one state, the number that applies can change the moment you cross a border.
The threshold, state by state
| State / territory | Small market threshold | Above it |
|---|---|---|
| Queensland | Up to 100 MWh a year | Large market (C&I) |
| New South Wales | Up to 100 MWh a year | Large market (C&I) |
| Australian Capital Territory | Up to 100 MWh a year | Large market (C&I) |
| South Australia | Up to 160 MWh a year | Large market (C&I) |
| Victoria | Up to 40 MWh a year, then a tiered band running to 160 MWh | Large market (C&I) |
| Tasmania | Its own gazetted figure | Large market (C&I) |
| WA / Northern Territory | Outside the National Electricity Market | Separate arrangements |
Victoria is the one that trips people up. Instead of a single cut-off, it runs a tiered structure: under 40 MWh a year you’re clearly in the small customer category, and there’s a further band running up to 160 MWh before a site is treated as fully large. If your Victorian site sits somewhere in that middle ground, don’t assume you’re automatically in one camp or the other. Get it checked rather than guessed.
Tasmania is the other one to watch. It gazettes its own threshold rather than adopting the 100 MWh figure used in Queensland, NSW and the ACT. Because that figure is set and reviewed on its own schedule, the safest move for a Tasmanian business is to check the current gazetted number directly rather than assume it lines up with the mainland states.
MWh, and working out where you actually sit
MWh is just kWh scaled up: 1 MWh = 1,000 kWh. Your bill almost certainly shows usage in kWh, so to check yourself against these thresholds, add up a full year of kWh and divide by 1,000.
A couple of examples make it concrete. A site using 6,000 kWh a month is using 72,000 kWh, or 72 MWh, a year. That’s under every state’s threshold, small market wherever it sits. A site pulling 12,000 kWh a month is at 144,000 kWh, or 144 MWh, a year. That’s under South Australia’s 160 MWh line, so still small market there, but over Queensland, NSW and the ACT’s 100 MWh line, so large market in any of those three. Same site, same usage, different classification, purely because of the state it’s in.
What actually changes when you cross the line
Crossing the threshold changes two separate things: your legal protections, and how you get quoted.
Your consumer protections. Below the threshold, you’re a protected customer under the National Energy Customer Framework. That gives you a standing offer your retailer has to provide if you’re ever without an active contract, so you’re never left with no supply option at all. It gives you hardship provisions if your business hits a rough patch and can’t pay on time. It gives you a cooling-off period after you sign. And it gives you access to a formal complaint-handling process if the retailer gets something wrong. Cross into large market territory and none of that is guaranteed the same way. The regulator’s assumption is that a business using that much energy has the size, and usually the internal expertise, to negotiate its own protections into the contract, so more of the relationship is left to what you and the retailer agree rather than what the rulebook mandates.
How you get quoted. Below the threshold, retailers quote you off published small-business retail rates, essentially a rate card. That’s what makes comparing 4 to 6 retailers side by side straightforward, you’re comparing published numbers against your usage. Above the threshold, there’s no rate card. Your usage profile goes out to a small group of retailers who price specifically against your actual load, and the number comes back through negotiation rather than off a shelf. (How that tender process actually runs.)
Is large market better or worse?
Neither, it’s just a different game. A large market customer usually gets a sharper cents-per-kWh rate because retailers are competing hard for real volume, and there’s more room to negotiate contract terms that suit the business rather than accept whatever’s on the rate card. What you give up is the automatic layer of consumer protection that a small customer gets by default.
That trade-off is exactly why it’s worth knowing which side of the line you’re actually on, rather than assuming, especially if your usage is close to a threshold or you run sites in more than one state.
How to check where your business sits
- Pull 12 months of bills, or ask your retailer for an annual usage summary.
- Add up the kWh and divide by 1,000 to get your annual MWh.
- Check that figure against your state using the table above, not a number you’ve heard secondhand from a business in a different state.
- If you run more than one site, do this per site, then ask a broker how your combined portfolio gets treated. Retailers and brokers often look at your whole footprint, not just one connection, when deciding how to quote you. (How multi-site portfolios get classified.)
What to do this week
- Find your annual kWh. It’s on your bill or your retailer’s online portal, usually shown as a 12-month usage summary.
- Convert it to MWh and check it against your state, using the table above rather than assuming the number that applies elsewhere applies to you.
- If you’re close to the line, or genuinely unsure, get it checked. Upload your bill on this page or email hello@smartaswitch.com.au and I’ll tell you straight whether you’re small market or large market, and what that means for how you should be shopping your next contract. No cost, no commitment.
Knowing which side of the line you’re on tells you which comparison to run, a straight panel quote or a proper tender, and which protections you can actually rely on if something goes wrong. Get it wrong and you’re either comparing yourself against a rate card that was never built for a business your size, or leaving money on the table you could have negotiated.
Joe Lawrence, Co-founder, Smarta Switch Australia 0435 642 592 · joe@smartaswitch.com.au