Snowy Hydro says long-awaited cost reveal is “imminent”, faces gas supply issues at new Kurri K... - Renew Economy

Snowy Hydro has indicated a cost reveal for its expansion project is coming soon, but the utility is also flagging gas supply constraints at its new Kurri Kurri gas plant. The timing matters: Snowy 2.0 was pitched as a firming solution for renewables, yet the company is simultaneously wrestling with gas availability for its own thermal station, which is designed to provide firm power when wind and solar fall short.

Where this fits

This is a live example of the hidden cost of a renewables-heavy grid. Snowy Hydro is being forced to build gas capacity to make its hydro scheme workable, and now faces the practical problem that Australia's gas supply is constrained. The story touches two core Energy Realism pressures at once: cost (the real price tag on the Snowy expansion remains unclear) and reliability (gas firming is unreliable if gas itself is scarce). It also illustrates why the firm-power problem cannot be solved by one technology alone. A nuclear alternative would sidestep this gas-supply dependency entirely.

What it means

Australia is building a grid that depends on multiple technologies working in concert, each with its own supply chain and constraint. When one piece, gas, becomes tight, the whole system's resilience weakens. The Snowy expansion will be expensive; adding a gas plant on top makes it more expensive still. A firm, non-combustible alternative would cost more upfront but would not leak energy security through gas imports or price spikes, and would not require a separate firming source at all.