Will Australia run out of gas?
Not "run out" in the literal sense — but AEMO has warned of a real east-coast supply gap this decade, on the very market that also keeps the lights on when wind and solar don't deliver. Here is the shortage, why gas is the transition's linchpin, and the export paradox nobody likes to say out loud. Every figure is sourced, because a number that can be knocked down is worthless.
1 · Is there really a shortage?
East-coast winter-peak supply gap risk
from the late 2020sAEMO's Gas Statement of Opportunities (GSOO) has repeatedly flagged a potential shortfall for NSW, SA and Victoria on peak winter days as southern conventional fields (Gippsland/Bass Strait) deplete faster than new supply is committed.
Coal exit compounds the gap
closures brought forwardAs coal generators retire ahead of firm replacement capacity, gas-fired peaking is called on more often — tightening the same domestic gas market AEMO warns is already short on peak days.
AEMO's Gas Statement of Opportunities is a forecast, not a certainty — it depends on how much new supply is committed and how fast southern fields (Gippsland, Bass Strait) decline. The risk is concentrated on cold winter peak-demand days in NSW, SA and Victoria, not a year-round shortfall. Sources: AEMO Gas Statement of Opportunities (GSOO); ACCC Gas Inquiry interim reports.
2 · Why gas is the linchpin of the transition
A grid running mostly on wind and solar still needs something that can ramp up in minutes when the wind drops or the sun sets — that's firm, dispatchable capacity. Storage and hydro do some of the job, but gas peaking plants are the fast, flexible backbone that keeps the system stable while that fleet is built out. AEMO's own plan still keeps 15 GW of flexible gas in the mix through 2050, alongside 49 GW of storage and 7 GW of hydro, as part of the 74 GW dispatchable fleet the system needs.
That is not an argument against renewables — it is an argument for keeping the thing that lets renewables work. A shortage on the gas side is a reliability risk for the whole grid, not just for gas users.
Source: AEMO 2024 Integrated System Plan (Step Change scenario) — see also The Real Cost.
3 · The export paradox
The sharp point is a policy failure, not a resource failure: Western Australia introduced a domestic gas reservation policy — requiring producers to set aside roughly 15% of LNG-project gas for the local market — and WA households and industry pay noticeably less for gas as a result. The east coast never introduced an equivalent reservation. So Australia ships the bulk of its own gas security overseas, then competes with Asian LNG buyers to pay for the gas it kept.
Source: ACCC Gas Inquiry (WA-vs-east-coast price and reservation comparison). WA's reservation settings have evolved over time and the exact set-aside share varies by project — treat the figure as indicative of the mechanism, not a single fixed rule.
4 · What would fix it
More domestic supply brought to market faster, an east-coast reservation mechanism modelled on WA's, and keeping gas peaking in the firming mix rather than legislating it out before storage and transmission can replace it. None of that requires abandoning the transition — it requires treating gas as the pragmatic bridge fuel it is, not blocking new supply while depending on the existing fleet to keep the grid stable.
Stated honestly: Gas is not zero-emissions — CO2 at the stack plus fugitive methane leakage are real, and that is conceded openly here. The case for gas is narrower: it is the fast, dispatchable firming a high-renewables grid needs now, and the alternative — forced outages during a supply gap — is worse than the emissions cost of keeping gas peakers in the mix as a bridge.
The numbers, as they move
A short, sourced brief when the figures shift — a supply-gap warning, a reservation debate, a milestone. No spam, no hype, just the receipts.