Two of the "big three", priced on their own terms
<a href="/retailers/origin-energy">Origin</a> and <a href="/retailers/energyaustralia">EnergyAustralia</a> are, with AGL, the three largest retailers in the country. Both are national, both offer electricity and gas, and both compete on market offers priced against the reference price. But they set the levers differently — the split between daily supply charge and usage rate, the size and type of any discount, sign-up credits and solar feed-in rates all vary between them and change over time.
So "Origin or EnergyAustralia?" has the same honest answer as every other head-to-head: it depends on your usage and your state. One will be cheaper for a low-usage apartment, the other for a high-usage family home with solar, and the ranking can reverse when either refreshes its offers. The brands are comparable in scale; the deciding factor is the specific plan against your specific usage.
The fields that decide it
Compare the daily supply charge and usage rate first. Low users feel the supply charge most; high users feel the usage rate most, so your consumption level alone can point to different winners. Then check whether each retailer’s headline discount is guaranteed or conditional — a pay-on-time discount is only worth its full value if you never miss a due date, and both retailers have historically used conditional discounts on some plans.
If you have solar, the feed-in tariff can swing the result, because a home that exports a lot is effectively paid back by the retailer at that rate. And always note the benefit period: both use time-limited offers, so a plan that is cheapest today may revert to higher rates in a year. Reading these fields — rather than trusting a familiar name — is how you actually tell them apart.
Who each genuinely suits
Origin suits households that want a large national retailer with dual fuel, its own app and rewards ecosystem, and a wide plan range. EnergyAustralia suits people who similarly want national coverage and dual fuel, and who like its particular mix of plans, tools and occasional fixed-rate or bill-smoothing options. Both are mainstream, reliable choices; neither is a boutique specialist, and neither is inherently the cheap one.
Because both adjust their offers regularly, the cheaper of the two is not a fixed fact — it is a moving target that depends on where you live, how much you use, and when you look. That is why a one-off "which is better" verdict is misleading, and why the sensible approach is to compare them on your own bill each year.
Prove it on your real usage
EnergySorted settles the question directly. Upload a recent bill and it costs every Origin and EnergyAustralia plan against your actual peak, off-peak and shoulder usage, your solar export and your gas steps, then ranks them cheapest-first alongside every other AER-listed retailer and proves the result against what you pay now. No estimates, no headline percentages — the real dollar figure for your home.
It takes no retailer commissions (funded by a roughly $39-a-year subscription), so neither retailer can buy a higher ranking, and it re-checks nightly to catch the moment a benefit period ends and a cheaper option appears. Browse <a href="/retailers">all retailers</a> or <a href="/electricity">compare electricity plans</a> to start, and see <a href="/resources/how-to-switch">how to switch</a> once you have your answer.