Sewage-powered hydro plant up and running


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North Head Wastewater Hydropower captures energy from treated effluent at Sydney Water, delivering renewable electricity, cutting greenhouse gas emissions, powering the sewage treatment plant, and advancing the utility's carbon-neutral program in New South Wales.

 

The Latest Developments

An energy-recovery system using treated wastewater to generate power, cut emissions, and power operations at North Head.

  • 60 m shaft drops treated effluent to drive turbines
  • Powers about 40% of the sewage treatment plant load
  • Generates electricity for roughly 1,000 homes equivalent

 

Sydney has become home to the first sewage-powered hydroelectric plant in Australia, as NSW energy managers continue to work to reduce the city's carbon emissions.

 

The harbour-side plant, which generates renewable energy from sewage by dropping treated wastewater down a 60-metre shaft, was switched on by NSW Water Minister Phil Costa and Climate Change Minister Frank Sartor.

The plant at North Head, like the 425-MW NSW green plant now online, will reduce carbon dioxide emission equivalent to taking 3000 cars off the road, Mr. Costa told reporters.

The energy it produces will be enough to power 1000 homes, but will primarily be used to power about 40 per cent of the sewage treatment plant, similar to Toronto biogas plans being rolled out.

"Sydney Water is on track to deliver its carbon-neutral program and this is part of that process," Mr. Costa said.

The plant will reduce Sydney's greenhouse gas emissions by over 12,000 tonnes a year and is part of a $50 million upgrade to the North Head sewage treatment plant.

Mr. Sartor said the plant was only one part of Sydney Water's effort to go green, alongside a new power plant inspiring communities across the region.

"Sydney Water use to be the biggest user of water, now 95 per cent of its water is recycled," he said.

But opposition climate change spokeswoman Catherine Cusack said the plant doesn't go far enough and that emissions continue to "skyrocket" as polluting power plants expand output across the grid nationwide.

"This government's renewable energy policies stink to high heaven," she told reporters in Sydney.

 

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