Wind turbines require massive structures that are polluting to produce and can harm ecosystems, but these impacts compare favorably with those of fossil alternatives.
No energy source is perfect, but solar and wind have a much lower health and environmental footprint than fossil fuels, a study finds. Biopower, though, is a mixed bag.
The long view: energy policy needs to stay firmly focused on the horizon.
The current flurry of energy policy aims to make power cheaper and more reliable. But it will take more than that to meet vital longer-term goals like cutting carbon while keeping future prices low.
Cultana, South Australia: scene of the nation’s next big hydro scheme?
A planned expansion to the Snowy Hydro scheme is grabbing headlines. But a new plan could build oceanfront hydro power in places without mountains - including South Australia.
The Snowy Hydro scheme already provides back-up energy to NSW and Victoria.
In its latest move on energy policy, the Turnbull government has unveiled a plan to boost generation from the Snowy Hydro scheme by 50%.
SA energy minister Tom Koutsantonis outlines his plan to make his state more energy-independent.
AAP Image/David Mariuz
South Australia has unveiled its keenly awaited energy plan, featuring battery storage, a state-owned gas power station, and a thumb of the nose to the federal electricity rules.
SA energy minister Tom Koutsantonis (left) and Premier Jay Weatherill have outlined their vision for the state’s electricity.
AAP Image/David Mariuz
South Australia is investing $550 million in a plan to improve the reliability of its electricity. But the side-effect is that the National Electricity Market will now be even harder to run.
No matter how hard we dig, the Earth’s resources are ultimately finite.
Mining image from www.shutterstock.com
Even supposedly "green" technologies such as renewable energy require materials, land and solar exposure and cannot grow indefinitely on this planet.
We need to take back the atmosphere to save it from pollution.
China Stringer Network/Reuters Pictures
As Donald Trump promises to pull America out of the Paris climate agreement, we need concerted civil action to turn our atmosphere into a public trust.
Bjoern Wylezich / shutterstock
The country's ambitious plans for sustainable transport and renewable energy must work in sync.
As politicians debate the causes of South Australia's power failures, separating fact from rhetoric has become difficult.
Bill Shorten will say that without confidence in the policy environment, investors would never put up the billions of dollars required for energy projects.
Australia could be the 'energy capital of Asia' but instead it is going backwards, Bill Shorten will say in a speech on Thursday.
Peak energy demand sometimes occurs when there’s no wind.
Here are some short- and medium-term strategies for transitioning to renewable, reliable and affordable energy in South Australia.
Malcolm Turnbull has continued his attack on the energy situation in South Australia, with its high reliance on renewables.
A series of questions by Essential on energy policy has found the Turnbull government is so far failing to persuade people of either its performance or its arguments on energy security.
A strong, certain price signal could see the dawn of a new period of investment in renewables.
Labor has been criticised for vacillating about about its 50% renewable energy ambition. But its proposed emissions intensity scheme could boost green energy without any hard target at all.
The government was this week caught off-guard by a decision from the Nick Xenophon Team to reject the omnibus bill.
Environment Minister Josh Frydenberg with a lump of coal during Question Time.
Eighteen groups have issued a plea for political leaders to 'stop partisan antics' and work together to achieve energy reform.
Even the cleanest coal plants add millions of tonnes of greenhouse gases to the atmosphere each year.
Coal image from www.shutterstock.com
Nobody in business wants to touch new "clean" coal plants, which means taxpayers would be left to foot the billion-dollar bills.
With the right mix, the grid can go fully renewable for the same cost and reliability as fossil fuels.
The Turnbull government is funding energy storage as a crucial missing piece of the electricity grid puzzle. Analysis suggests an affordable, fully renewable grid doesn't require any heroic assumptions.
Better managing how we use electricity in our homes will reduce pressure on the grid, and reduce the need for more power stations.
Power line image from www.shutterstock.com
Fossil fuel advocates claim only coal and gas can deliver cheap and reliable energy, and renewables are synonymous with sustainability. But demand management can solve all three problems.
The rise of renewable energy is one reason the world is shifting away from coal.
Wind turbine image from www.shutterstock.com
Global emissions from fossil fuels have stalled. That puts us in the right place to keep warming below 2℃, but there's plenty of work still to be done.