Two Pilbara mines to be powered solely by solar

The federal government will provide $24.2 million in funding and a $90 million loan for a project that will see daytime operations at two Pilbara iron ore mines powered entirely by solar power.

Alinta Energy will construct a large solar farm at Fortescue Metals Group’s mining hub in the Chichester Ranges, three hours drive south of Port Hedland in Western Australia.

In addition to installing a 60 MW solar farm, Alinta will construct 60 kilometres of new transmission lines to connect to the new power system to Fortescue’s Christmas Creek and Cloudbreak mines, which operate within the Chichester Hub.

The transmission lines will connect the new system to Hancock Prospecting’s Roy Hill mine and Alinta’s existing 145 MW gas-fired Newman Power Station, which is also home to the 35 MW / 11 MWh Newman storage system – Western Australia’s largest lithium-ion battery.

The Australian Renewable Energy Agency (ARENA) is providing the $24.2 million in funding towards the project, which will also receive a loan of up to $90 million from the Commonwealth Government’s Northern Australia Infrastructure Facility (NAIF).

ARENA’s funding has been allocated as part of the agency’s recently announced priority to invest in projects that help industry to decarbonise. Remote, energy hungry mines have been an early focus, with ARENA already announcing funding for hybrid wind, solar and battery systems at GMA’s garnet mine in Port Gregory, and Gold Field’s Agnew gold mine.

Until now, the majority of off-grid mines have relied on gas and diesel to meet their energy requirements. Alinta’s new project has set out to supply all of the daytime energy needs of the Chichester iron ore mine with renewables, working alongside a gas generator that will meet any additional requirements.

Fortescue CEO Elizabath Gaines described it as a landmark project that will deliver emissions reductions of about 40 per cent at the Christmas Creek and Cloudbreak mines.

The two mines collectively supply as much as 100 million tonnes of iron ore every year and have already embraced industry leading technologies to boost their productivity. A five kilometre long conveyer at the Cloudbreak site has replaced the equivalent of 12 manned trucks, and the company is on track to introduce a fully automated haulage fleet.

ARENA CEO Darren Miller said that demonstrating the capability of renewables to deliver energy for mines and other energy intensive operations in remote areas could unlock further investment in renewable energy and bring down emissions.

“This will also show how interconnection of loads and different generation and storage – including solar, battery storage and gas – can provide secure and reliable electricity,” Mr Miller said.

“Through projects such as this, ARENA is helping industry to reduce emissions. The mining sector in Australia which is vital to our economy accounts for approximately 10 per cent of our energy use, so it is hoped these projects will encourage more mining operations to look to renewable energy and low emission solutions.”