Kurri Kurri residents may soon notice changes around the Snowy Hydro power station, with overnight testing set to begin as the long-awaited project enters its final phase. The testing is expected to run for several weeks and is a key step before the station becomes fully operational, marking a significant moment for the local energy landscape.
What we know so far
Snowy Hydro has confirmed the Kurri Kurri Power Station is now in the final stages of commissioning. The next phase involves testing the station’s back-up diesel fuel systems.
Testing is expected to commence on or after Monday, 12 January 2026. Once underway, it will occur overnight and is anticipated to continue for about three weeks.
Only one generator will be tested at a time to minimise impacts on the surrounding community. Snowy Hydro says some odour and a visible plume are likely during testing, but significant impacts are not expected.
Timeline or sequence of events
Construction of the Kurri Kurri Power Station has progressed over several years on the former Kurri Kurri aluminium smelter site. The project was designed to support the Hunter region and the broader NSW electricity grid during periods of high demand.
With major construction now complete, the project has moved into commissioning and systems testing. The upcoming diesel testing phase is one of the final steps before the station is declared fully operational.
Following the completion of overnight testing, the station will be prepared to operate as required by the electricity market.
Local impact
Residents in Kurri Kurri, Heddon Greta, Weston and surrounding suburbs may notice intermittent odour or exhaust plumes during overnight hours while testing is underway. Increased activity may also be observed at the power station site during late-night periods.
Snowy Hydro says testing has been scheduled overnight and limited to one generator at a time to reduce disruption. No road closures or changes to local services have been announced at this stage.
Official response
Snowy Hydro has emphasised the limited nature of the testing, stating that diesel will only ever be used as a back-up fuel. When operational, the Kurri Kurri Power Station will primarily run on gas and only during times of peak electricity demand.
The company says the 660-megawatt station will play a critical role in preventing blackouts and supporting Australia’s transition to renewable energy by allowing more wind and solar power to enter the grid when conditions allow.
Community members with questions or concerns are encouraged to contact the Snowy Hydro Community Hotline on 1800 570 529 or email communityconsultation@hunterpowerproject.com.au.
What happens next
Overnight testing is expected to continue for around three weeks once it begins. Engineers will monitor performance and ensure systems meet safety and operational requirements.
After testing is completed, the power station is expected to move closer to full operational readiness. Snowy Hydro has indicated the station will only operate when demand is high and renewable generation is limited.
Further updates are expected as commissioning progresses.
Closing paragraph
As Kurri Kurri Power Station moves toward full operation, the coming weeks mark a pivotal moment for the Hunter’s energy future. Residents are encouraged to check back for updates as testing continues and to follow related local coverage on how the project may affect the region in the months ahead.