In a new milestone that experts say will become increasingly normal, Australia’s main electricity grid was briefly powered by 50 per cent renewable energy this week.
Data on the sources of power in the National Electricity Market (NEM) showed that at 11.50am on Wednesday, renewable energy was providing 50.2 per cent of the power to Queensland, New South Wales, Victoria, Tasmania and South Australia, the five states served by the market.
Guardian Australia reports rooftop solar was providing 23.7 per cent of all the power demand, followed by wind at 15.7 per cent, large-scale solar with 8.8 per cent and hydro at 1.9 per cent.
At the same time, coal was still the largest provider of electricity on the grid, with power stations fed with black coal generating 35.7 per cent and brown coal plants at 13.5 per cent.
The Guardian Australia reports the milestone was spotted using an online tool called OpenNEM that monitors the grid in real-time using data from the Australian Energy Market Operator (AEMO).
Professor Dylan McConnell, of the University of Melbourne’s Climate and Energy College and who helped develop the tool, said: “We will start to see this happening more frequently.
“It was just a snapshot in time, but it’s indicative of an underlying trend in the system.”
Renewable energy maintained the 50 per cent mark for only about 10 minutes and over the entire day contributed 31.2 per cent of the electricity used across the five states.
The Guardian Australia reports Professor McConnell said spring months had generally been times of high renewable energy output, when demand was not being driven either by customers wanting to heat or cool homes.
A continuous rollout of rooftop solar electricity was a key driver, Professor McConnell said.
The milestone reflects a rapid acceleration on renewable energy deployment across Australia in recent years that has seen record-breaking levels of investment.
In 2018, a report from the Clean Energy Regulator has shown more than two million small solar systems were installed, next to 3.5 gigawatts of large renewables projects accredited against Australia’s 2020 renewable energy target.
The report said Australia was now ahead of schedule in meeting the large-scale target of 33,000 gigawatt hours of renewables generation by 2020.
Other analysts say that clean energy could make-up 35 per cent of Australia’s electricity needs within two years.
Guardian Australia reports Kane Thornton, chief executive of the renewable energy industry’s Clean Energy Council, said: “It is a fantastic achievement to have more than half of the National Electricity Market powered by renewable energy, and it’s worth celebrating.
“A decade from now it will be completely normal as more renewable energy and storage projects are built to replace retiring coal-fired power stations.
“At the beginning of the decade South Australia’s power system ran on more than 50 per cent wind and solar for the first time, but today it happens all the time.
“Renewables and storage can do everything our old coal plants can do, just cheaper, cleaner and more reliably.”
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