Shutdown in Seattle to slow the spread of coronavirus empties the streets, March 26, 2020. Less economic activity means less revenue for utilities.
AP Photo/Ted S. Warren
The US is gradually shifting to lower-carbon energy sources, but the COVID-19 pandemic, an oil price crash and a likely recession are big speed bumps.
Solar films could turn windows into powerful solar panels.
(Pixabay)
New lightweight, efficient and ultra-thin solar technologies show promise, but it may be too soon to abandon conventional solar photovoltaics.
Luka Cochleae/AAP
For the next couple of decades, Snowy 2.0 will in fact store coal-fired electricity, not renewable electricity.
Massimo Cavallo/Shutterstock
Here’s how spinning metal can smooth out the spikes in renewable electricity generation.
New energy projects appear to be facing an uncertain future in Canada.
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Teck Resources’ decision to cancel its oilsands project is a blow to Trudeau’s government.
SHUTTERSTOCK
Sun Cable could provide Australia an alternative to the export business of coal and gas, and even reduce our export dependence on China.
How can we store energy from intermittent renewable energy sources?
Benny(I am empty)/ Flickr
Pumped thermal electricity storage turns electricity into heat and back again – which can compensate for the intermittent supply of renewables.
Mick Tsikas/AAP
The transformation of the national electricity market has “progressed at a remarkable pace and scale” over the last year as it moves towards renewables, but security remains a critical issue.
Focke Strangmann / AAP
Wind turbines and solar farms need a lot of raw materials. Australia can supply some, but we need to do it sustainably.
Mick Tsikas/AAP Image
The world runs on energy, so finding low-emission alternatives to fossil fuels is crucial. Wind and solar are cheap and abundant but can’t do everything. But hydrogen fuel could complete the picture.
Marten Bjork/Unsplash
The global warming potential of different greenhouse gases is often poorly understood, distorting which are the biggest concern.
Flickr
The benefits of gas-fired power are badly overstated, and will take Australia further in the wrong direction on climate change.
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Social tipping interventions have the potential to pave the way for rapid change and avert climate change.
Muskrat Falls on the Churchill River in Labrador, in February 2011.
THE CANADIAN PRESS/Paul Daly
The mainstream news media has been biased in its reporting and portrayal of Indigenous Peoples on stories about renewable energy projects. What and how can they do better?
Most proposed solutions don’t address the systemic problems facing Eskom, in particular its parlous finances.
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The deluge of opinions and proposed solutions to South Africa’s energy crisis reflects corporate and political interests.
The Garzweiler surface mine produced 35 million tonnes of brown coal (lignite) in 2017. Germany plans to phase-out coal-fired power by 2038.
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Plans to reduce emissions quickly are seductive but can stall. Climate initiatives should end dependence on fossil energy and pursue a path towards a more just and equitable society.
Australian-designed technology will soon be responsible for 50% of all solar energy produced globally.
Glenn Hunt/AAP
A technological arms race in the 80s resulted in a world-first solar cell, that today underpins half the world’s solar power.
Lithium-ion batteries are already supporting renewable power generation, but a future without fossil fuels will need even better battery technology.
AAP
A new technology for rechargeable batteries overcomes many of the problems with the ones we use today.
The costs of renewable energy, including solar photovoltaics, is declining rapidly.
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Investing billions in refurbishing nuclear generating stations doesn’t make economic sense as the cost of renewables fall dramatically.
Few people would have predicted in 2010 that by the end of the decade, electricity generation from renewables would outpace nuclear.
J Davidson/Shutterstock
Britain greets a new decade with substantially cleaner electricity, but challenges lie ahead to decarbonise its transport and heating.