The unthinkable has happened: Renewable energy is now powering the majority of our electricity! For the first time ever, clean energy sources have surged to become the dominant force in the eastern seaboard's power supply, surpassing 50% of the electricity mix during the final three months of last year. This incredible feat not only helped the grid navigate a summer of scorching heat and sky-high demand from air conditioners but also marks a monumental leap forward in Australia's journey towards a greener future.
New figures released by the Australian Energy Market Operator reveal that clean energy contributed a record-breaking 50.1% to the eastern seaboard's electricity grid in the December quarter. This is a truly significant milestone, signaling a powerful shift away from the era of polluting coal-fired power stations.
But here's where it gets fascinating: Investors and governments have been injecting billions of dollars into clean energy and storage projects. This sustained investment is the engine driving the continuous growth in renewables' share of the grid, pushing fossil fuels to an all-time low during this record-setting quarter.
Alison Reeve, the Director of Energy and Climate Change at the Grattan Institute, described this December quarter record as a crucial test for the grid. She recalled a time when the idea of the grid handling even 20% renewables was met with skepticism, with detractors claiming it was simply unachievable. "I’m old enough to remember when people said the grid will never hold up with 20 per cent renewables in it, and the grid is still holding up now," she remarked, highlighting how this real-world success validates earlier predictions.
And this is the part most people miss: While this record is fantastic news, Reeve cautions that it doesn't mean the grid is fully prepared to operate without fossil fuels as a backup for weather-dependent renewables. When we look at the entire year, including the less sunny winter months, renewables averaged around 44% of the grid's power.
Consider the recent heatwave that gripped Sydney and Melbourne, with temperatures soaring over 40 degrees Celsius. During this intense period, it was a rare instance where none of the major coal plants were experiencing unplanned outages. "There was a bit of an element of luck there, with all of the coal plants remaining online," Reeve noted. "If that heatwave had hit probably a week, week and a half earlier, there was actually quite a bit of coal offline, and we potentially would have been in trouble."
On days like January 7th in Melbourne and January 10th in Sydney, when temperatures exceeded 40 degrees, fossil fuels and renewables remarkably contributed an almost equal share of energy to the grid, at 48% and 52% respectively.
Looking at the bigger picture, renewables have seen a dramatic rise over the past decade. From a mere 20% of average annual electricity supply in 2018, they climbed to 30% by 2021, reached 40% in 2024, and have now exceeded 43% in the past year.
The Albanese government has set an ambitious goal of achieving 82% renewable energy by 2030. However, the pace of building new renewable facilities and the essential power lines needed to connect them to major cities is still lagging behind what experts believe is necessary to meet this target and effectively replace the nation's aging coal-fired power stations.
This brings us to a point of contention: Origin Energy's Eraring plant, Australia's largest coal-fired power generator, has had its closure delayed by another two years. This decision, made amidst warnings that the electricity grid is not yet ready for its retirement, has understandably angered environmental advocates who are pushing for more aggressive and immediate cuts to greenhouse gas emissions.
Is it more important to maintain grid stability with existing, albeit polluting, infrastructure, or to accelerate the transition to renewables, even with potential short-term risks? This extension also highlights a political tightrope for the Albanese government, which is facing pressure over rising energy prices and is working to integrate more renewables to reduce emissions and replace retiring coal plants, all while striving to keep the lights on and bills affordable.
Energy Minister Chris Bowen sees these renewable records as proof that the government is successfully managing the transition. "When coal breaks down, your bills go up. And coal is breaking down a lot. That’s why we’re working to get more renewables into the system, to bring down prices for Australian households and build a more reliable grid for the future," he stated.
Daniel Westerman, the CEO of AEMO, pointed out that the record for the peak generation period has surged from 54.5% in 2021 to 78.6% this year, underscoring that the clean energy transition is indeed on track. He added, "Consumers, industry and governments are driving this transition, with coal-fired generation needing to become more flexible to accommodate higher levels of renewables."
What are your thoughts on the pace of this energy transition? Do you believe Australia is moving fast enough to meet its climate goals, or is the focus on grid reliability and affordability more pressing right now? Share your views in the comments below!
