The potential clean energy sources are all around Sydney, just waiting to be harnessed.
Sun, wind, waste biomass, geothermal, tides and waves: all these energy sources in Sydney's backyard add up to a zero-carbon energy solution for the city.
The price of new-build renewable energy is expected to fall significantly relative to new-build coal energy in coming years.
AAP Image/Lucy Hughes Jones
The price of renewable energy will fall significantly relative to new-build coal in coming decades, making an all-renewable electricity system more desirable, both economically and environmentally.
Pumped hydro: all you really need is some reservoirs and a big hill.
AAP Image/Lukas Coch
Electricity storage is vital to the stability of a renewable energy grid. The world's favourite form of storage is pumped hydro – and researchers have located thousands of candidate sites.
Nuttawut Uttamaharad / shutterstock
Offshore wind is an expensive business to get into.
Yallourn Power Station in the Latrobe Valley, Victoria.
AAP Image/David Crosling
On Q&A, an audience member said renewable energy is 'now cheaper than coal'. Senator Matt Canavan disagreed, saying renewables are not 'at the moment, cheaper than coal'. Let's look at the numbers.
As more wind turbines have been put in place, the cost of wind energy has gone down.
Dad of T&S
If history is a guide, policies that promote wind power expansion will lead to lower prices – potentially beating fossil fuels in the US by 2030.
Solar PV outstripped coal as the leading source of new electricity generation worldwide last year.
AAP Image/Lukas Coch
Solar PV and wind energy have overtaken coal as the leading sources of new electricity generation worldwide, with falling prices and new storage technologies making clean energy ever more attainable.
The UK is about to miss an opportunity if it tries to take on the giants of the lithium-ion battery industry.
Lessons from the Lone Star State: A surge in wind power on the Texas grid didn’t cause reliability problems (and brought down electricity prices) because regulators improved the efficiency of wholesale electricity markets.
Sarah Fields Photography/Shutterstock.com
Energy Secretary Rick Perry wants to know if wind and solar are compromising the reliability of the grid and hurting coal power. The answer lies in his home state of Texas.
Solar provides tremendous opportunities for emerging entrepreneurs.
Africa's energy potential remains under-exploited, the energy entrepreneur is well-positioned to take advantage of the opportunities presented by the energy sector.
Why were so few complaints about wind farms investigated further? And who made these complaints anyway?
Have the hordes of wind farm complainers all gone shy?
Over a period in which the Australian economy saw around 600,000 additional people get jobs, employment in the renewables sector has been going backwards.
AAP Image/City of Sydney, Damian Shaw
Estimates released by the Australian Bureau of Statistics suggest that the number of direct full-time equivalent jobs in renewable energy activities has continued to fall from its 2011-12 peak.
To manage renewable energy efficiently, all weather variation need to be taken into account.
Relying less on fossil fuels is one of the key challenges of energy transition, and taking weather variations into account can help increase the overall efficiency of a renewable-energy system.
Engineers are hoping to iron out a century-old technology that could reduce shipping emissions.
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.
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.
Watt a good idea.
Many believe we can stabilise the power supply by asking customers to help - but there's a problem.
Chinese President Xi Jinping, center, U.S. President Barack Obama and U.N. Secretary-General Ban Ki-moon shake hands during a joint ratification of the Paris climate change agreement in eastern China’s Zhejiang province, Sept. 3, 2016.
How Hwee Young/Pool Photo via AP
Although Donald Trump has called climate change a hoax invented by China, Chinese leaders believe cutting carbon emissions will generate economic and political payoffs at home and abroad.
South Africa’s new energy plan shows a greater reliance on gas, solar and especially wind power.
South Africa has a new energy plan. Renewable energy in the form of wind, gas and solar feature high on its agenda.