Two companies, roughly comparable market capitalisation, same regulatory environment, same retail base of millions of households and businesses, and almost opposite answers to the same question. What do you do with a coal fleet you have to close? AGL and Origin Energy have landed on genuinely different strategies, and the gap between them tells you more about how the gentailer model is being stress-tested right now than either company’s own investor presentation does.
Start with the numbers that matter. AGL still owns and runs its generation fleet end to end: Bayswater, Loy Yang A, the batteries going in behind them, the wind and solar it’s been bolting on. Origin, by contrast, sold down its stake in Octopus Energy’s technology platform years back but kept something more consequential: a 20 per cent equity stake in Octopus Energy itself, and a retail strategy that increasingly looks like it’s being run in partnership rather than built in-house. Different machines. Different bets on where the money actually gets made in the next decade.
The coal exit timetables diverge
AGL has Bayswater pencilled for closure by 2033, with Loy Yang A following toward the end of the decade on its current schedule, though both dates have moved before and nobody treats them as fixed in stone anymore. We’ve covered AGL’s awkward middle act in detail on this site, and the short version is that AGL is trying to replace roughly 4.6 gigawatts of coal capacity with its own batteries, wind and firming contracts, largely on its own balance sheet.
Origin’s biggest coal asset, Eraring, was supposed to close in 2025. That date became 2027, and we’ve written separately about how 2025 became 2027 at that plant specifically. The extension came after the NSW government agreed to underwrite the plant’s continued operation, a deal that effectively shifted some of Origin’s closure risk onto the state’s books. That’s not a criticism of Origin’s management. It’s a rational response to a tight capacity market, but it is a different risk posture to AGL’s, which has generally resisted asking governments to backstop its coal fleet.
Two different bets on firming
AGL is building firming capacity the hard way: big batteries at its own retired coal sites, new wind and solar PPAs, grid-scale storage it will own and operate. It’s capital-intensive and it shows up on AGL’s own balance sheet as debt and depreciation, not as an off-balance-sheet contract. The upside, if it works, is that AGL captures the full margin on firming rather than paying someone else for it.
Origin has taken the opposite tack more often than not: Octopus Energy’s retail platform, the Eraring extension deal with government support, a general preference for partnerships and underwritten arrangements over owning every asset in the chain. Origin still has its own generation and renewables pipeline, including interests in battery storage and gas peaking, but the company’s public messaging leans harder on flexibility and capital discipline than AGL’s does.
Here’s where I’ll put a flag in the ground. I reckon AGL’s approach is the more honest one for a company that calls itself a gentailer, because it actually bears the generation risk it’s pricing into retail contracts. Origin’s model works fine right up until the partner relationship gets tested, and Octopus Energy’s technology platform is a UK-headquartered business with its own priorities, which won’t always line up neatly with an Australian retailer’s needs on a 40-degree February afternoon when wholesale prices are swinging hard.
The retail books look similar, the margins don’t
Both companies run customer bases in the several-million range across electricity and gas, both compete on the same Default Market Offer benchmark the AER sets each year, and both have been through periods of customer complaints data that regulators and consumer groups have flagged. On the retail side the products look almost interchangeable to an outside observer: time-of-use tariffs, solar feed-in offers, bundled gas and electricity plans, virtual power plant trials.
Where it splits is margin resilience. AGL’s vertically integrated model means that when wholesale prices spike, the generation arm’s profit partially offsets the retail arm’s cost pressure: the classic gentailer hedge. Origin has the same structural hedge through its own generation and gas interests, including its stake in Australia Pacific LNG, but its public statements have put more weight on trading and risk management skill than on asset ownership as the source of that hedge. Both are legitimate approaches. Neither is bulletproof, and AEMO’s own market data on dispatch outcomes shows just how often five-minute price spikes can outrun a trading desk’s models, something we went through in detail in our piece on how the NEM actually dispatches power every five minutes.
Gas exposure and the APLNG question
Origin’s one-third interest in Australia Pacific LNG is the single biggest structural difference between the two companies, and it doesn’t get enough attention in the gentailer comparison conversation. That stake ties Origin’s earnings to global LNG pricing and east-coast gas market dynamics in a way AGL simply isn’t exposed to. When east-coast gas prices run hot, which they have done repeatedly amid the supply tightness we covered in has the gas industry been written off too early, Origin’s APLNG earnings can do a lot of heavy lifting for the group result, even while the retail division faces the same cost pressures AGL’s retail arm does.
That’s a real diversification advantage for Origin, not a weakness. It also means Origin’s fortunes are tied to decisions well outside the NEM: LNG contract pricing in Asia, domestic gas reservation policy debates, the pace of Narrabri and other upstream projects reaching final approval. AGL’s fortunes, by contrast, are tied almost entirely to how fast it can get batteries and renewables connected inside the east-coast grid, which makes AGL a cleaner read on the domestic transition and Origin a messier, more globally exposed one.
Capital discipline versus capital intensity
AGL’s FY filings show a company ploughing significant capital expenditure into owned generation and storage assets years ahead of when the coal fleet actually needs replacing. That’s deliberate – building the replacement before the retirement, rather than after it, the lesson AEMO’s Integrated System Plan has been banging on about since the early 2020s. Origin’s capital allocation has looked more conservative on new owned generation and more willing to use partnerships, joint ventures and underwritten arrangements to spread the capital load.
Short sentence, because it matters: that’s a dividend policy choice as much as a strategy choice. Origin shareholders have generally been rewarded with steadier capital returns. AGL shareholders have worn more near-term capex and more balance-sheet risk in exchange for what the company is betting will be a bigger slice of the firming margin in the 2030s. Neither board is wrong to have made the call it made. But they are different calls, and investors treating AGL and Origin as interchangeable gentailer plays are missing the point entirely.
What the Capacity Investment Scheme does to both
The federal government’s Capacity Investment Scheme, which we’ve explained in detail in how the Capacity Investment Scheme actually works, changes the calculus for both companies in a way that’s underappreciated. The scheme effectively underwrites revenue for new dispatchable and renewable capacity, which reduces the risk premium on exactly the kind of owned-asset build AGL has been pursuing. If the CIS tenders keep landing the way they have, AGL’s capital-intensive bet starts to look less risky than it did when the company first committed to it, because the government is quietly absorbing some of the downside AGL would otherwise carry alone.
Origin can bid into CIS rounds too, of course, and has. But a company whose strategy leans on partnership and trading flexibility gets proportionally less benefit from a scheme designed to de-risk long-dated owned infrastructure. It’s one of the quieter ways policy settings are nudging the two companies’ strategies further apart rather than converging them, the opposite of what you’d expect a single national scheme to do to two firms competing in the same market.
The verdict
If I had to back one strategy for the next five years, I’d back AGL’s – not because Origin’s approach is wrong, but because AGL is the company actually building the asset base the NEM needs, and the CIS is increasingly paying it to do so. Origin’s gas diversification is the more comfortable earnings cushion today, and APLNG will keep paying out handsomely while east-coast gas stays tight. But comfort today isn’t the same as positioning for 2033, when AGL’s coal fleet is gone and its battery-and-renewables book, if it lands on schedule, starts throwing off margin that Origin’s partnership model will struggle to replicate without owning more of the physical chain itself.
Both companies would tell you they’re hedged against the other’s risks. Both are at least half right. The one certainty is that by the time Bayswater and Eraring are both switched off for good, these two gentailers will look less like twins wearing different jerseys and more like genuinely different businesses that happen to share a retail market: a bit like watching two county sides play the same format with completely different team sheets and discovering, three seasons on, that one built for pace and the other for patience.
– Marcus Wren, Editor
Image: Ché Lydia Xyang (CC BY-SA 3.0) via Wikimedia Commons