Australia's energy transition is a success story in the making, and it couldn't have come at a better time!
Imagine if a heatwave like the one we experienced last week had hit the east coast a decade ago. Our power supply might have crumbled under the strain. But this time, despite some hiccups, the system held strong and delivered when we needed it most.
The latest data from Australia's main grid shows that renewables and energy storage are leading the way, contributing over 50% of supplied electricity for the first time. And here's the best part: wholesale power prices have dropped by more than 40% compared to last year. It's a win-win situation!
But here's where it gets controversial... Some might argue that Australia's energy transition has been long, complicated, and difficult. However, our recent research suggests that if these positive trends continue, we could see lower retail electricity bills by mid-2026. As more coal plants shut down and new infrastructure is put in place, prices might rise again, but overall, the shift away from gas and coal for power and petrol for cars is likely to result in significantly lower energy costs for households.
While we're not quite there yet, the immediate trends are certainly encouraging. Let's dive deeper and explore some of the key factors driving this progress.
Renewables and Batteries: A Powerful Duo
Last quarter, wind generation increased by almost 30%, grid solar by 15%, and grid-scale batteries almost tripled their output. Meanwhile, gas generation took a hit, falling by 27% to its lowest level in a quarter century. Coal generation also dropped, reaching its lowest quarterly level ever.
Gas has traditionally been the most expensive way to produce power. Gas peaking plants are typically fired up only when supply struggles to meet demand, and power prices skyrocket. With less demand for gas, wholesale prices have decreased, which is great news for consumers.
However, it's important to note that consumers might not see an immediate reduction in their power bills. Wholesale prices only make up about 40% of a power bill, and most retailers only adjust their prices once a year. But if these lower wholesale prices are sustained, it should eventually provide some relief for consumers.
A Resilient Power System
The power system performed exceptionally well last quarter, despite some challenges. In recent years, many aging coal plants have become less reliable, but they held up during critical times. Rainfall filled Snowy Hydro's reservoirs, boosting hydro power, while solar and wind generation performed admirably.
In early January, intense bushfires ravaged grasslands, forests, and several Victorian towns. Some areas lost power when timber power poles burned or when trees fell on transmission lines. Sustained heat can also cause power substations or transformers to fail more frequently. However, these issues were mostly localized, and the system overall handled the strain remarkably well.
Summer heatwaves used to put immense pressure on the power grid as millions of people turned on their air conditioners simultaneously. But this summer, the system managed just fine. Not only were most fossil generators available most of the time, but the high output from rooftop solar paired exceptionally well with the demand for air-conditioning.
The Rise of Electricity Storage
Until recently, electricity had to be generated and used immediately. Storing it was only possible in expensive and rare pumped hydro facilities. That's why the advent of batteries is a game-changer. For the first time, power can be generated and easily stored for later use.
Plummeting battery prices have led to a surge in installations across Australia. Since 2024, nearly 4,000 megawatts of grid storage have come online. Grid batteries are no longer just stabilizing the grid; they're now outcompeting gas by soaking up surplus solar and wind energy and releasing it during evening peak demand periods.
At a smaller scale, the government's home battery rebate program has been incredibly popular, leading to cost blowouts and rapid uptake. Many households have found these batteries to be a lifeline during power outages.
In the future, medium-scale community batteries could power entire towns or suburbs, boosting grid resilience.
Transmission Delays and the Role of Coal
Hitting higher levels of renewables will require new transmission lines, but some projects are already behind schedule. This is one reason why NSW's Eraring coal plant will continue operating until 2029. Delays in completing the new NSW-South Australia transmission line, EnergyConnect, have also pushed back the planned closure of the Torrens Island gas power plant near Adelaide.
Gas will be needed for longer than coal, as it can quickly fire up and fill gaps when wind and solar generation are low. While it won't be used extensively, gas will serve as an essential backup.
The gas market itself faces challenges, and governments are working to address longstanding issues. Late last year, the federal government proposed a mandatory east coast gas reservation scheme to tackle these problems.
Victoria's Unique Challenges
Victoria, Australia's most gas-dependent state, is facing some looming problems. Bass Strait wells are drying up, and most of Queensland and WA's gas is exported as liquefied natural gas (LNG). The Victorian government recently opened up new areas for gas exploration after initially rejecting the idea.
A new plan by federal, state, and territory energy ministers may grant the Australian Energy Market Operator more power to intervene in the gas market, potentially by contracting new infrastructure like pipelines and import terminals.
The Victorian government is trying to reduce its reliance on gas, but it's a slow process. The state has high hopes for offshore wind farms to harness the stronger and more reliable winds across Bass Strait, but progress towards the 2-gigawatt goal by 2032 has been slow, and no turbines have been installed yet.
Some developers have withdrawn their applications due to global uncertainties and delays in the auction process. Last week, Victoria announced that the auction process will finally begin in August. The question remains: Is there enough time left to replace retiring coal plants with new offshore wind farms?
Progress, but Challenges Remain
It's worth noting that not too long ago, it was a popular belief that Australia's grid could never accommodate more than 20% renewables. Now, we've reached 50%.
While it's not all smooth sailing, and the government's goal of 82% renewables in four years might be a stretch, it's evident that real progress is being made. And with the challenges we face, this progress couldn't have arrived soon enough.
So, what do you think? Are you optimistic about Australia's energy transition? Do you think we can achieve even higher levels of renewables in the coming years? Share your thoughts in the comments below!
