The U.S. could dramatically increase solar and wind power without expensive energy storage. The key is to overlay high-voltage direct current power lines on our system of regional grids.
To decarbonise the electricity sector, Australia could increase the volume of renewables while closing old fossil fuel power stations.
Wind turbine image from www.shutterstock.com
Under the Paris climate agreement, Australia has stated that it will reduce greenhouse gas emissions by 26-28% by 2030 compared to 2005 levels. How will we achieve this?
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The land of Ikea and apple charlotte is hoping to sell its vision of sustainability at COP21. There are a couple of meatballs in the ointment, though.
NASA once had 400,000 people working on space exploration. We should battle climate change in the same way.
South Africa has installed solar water heaters in low cost housing areas. It should be installing solar PV for energy.
South Africa has been slow to adopt renewable energy sources. One option, which has proved successful elsewhere, would be to install solar photovoltaic panels on rooftops in low-income areas.
A large solar thermal plant in Morocco will provide energy for 1m people – here's how it will work.
Mountain to climb? The Greens have set their sights on topping 90% renewable energy.
AAP Image/Lukas Coch
The Greens have backed a renewable energy goal of 90% by 2030. With wind and solar getting cheaper all the time, it's an achievable challenge.
When it comes to gas vs renwables, it seems the balance isn’t right.
Who'd want to take part in the UK energy economy when the government keeps changing the rules?
Coal no more? The rise of renewables and climate action will spell an end to Australia’s coal industry.
Coal image from www.shutterstock.com
Australia's failure to reassess its commitment to coal will have serious negative consequences, not only for Australia’s economy, but for the health and well being of millions of people and the global environment.
India’s main aim is to get electricity to more of the population - using renewables where possible.
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India has pledged to ramp up renewable energy and make its economy more carbon-efficient. And while that will help cut emissions, the main motivation is to give power to the many who still lack access to electricity.
Solar panels are installed at a project in South Africa’s Northern Cape province.
Copyright Droogfontein Solar Power
Renewable energy programmes in South Africa need stronger policies to ensure that communities benefit.
Low carbon choices such as solar power are essential for the African continent, if it intends to stop the harmful global warming effects.
For the sake of mitigating climate change, the African continent needs to make low carbon energy choices.
China knows the smart money is on renewables, and not just because of climate change.
China is pouring money into clean energy - not just to tackle climate change but because these are economically fruitful industries. And as China develops them, the technologies will get cheaper for everyone.
The new Labour leader has been pilloried for extolling public ownership. In fact, he's bang on trend.
When we talk about saving water, we also need to talk about saving energy. The two are inextricably linked
Australia has 1.4 million solar rooftops. But it is with the addition of battery storage that energy grids will really be revolutionised.
AAP Image/Lukas Coch
New prime minister Malcolm Turnbull has stressed the importance of embracing 'disruptive' technologies that shake up existing business models. Solar power and battery storage is one of the most enticing options.
Freshly squeezed: an apeeling opportunity for renewable chemicals.
Andrés Nieto Porras/Flickr
The orange juice industry throws away a half of the fruit needed to make juice. Could this be used as an alternative to chemicals derived from crude oil?
The EPA Clean Power Plan imposes limits on power plants’ carbon emissions.
Poor Americans suffer disproportionately from higher energy prices. Energy policies should fund innovation to make low-carbon energy cheaper.
University of Tokyo
Innovative ideas about how to decarbonise shipping are helping to harness the original renewable power source once more.
Will alternate solar technologies get a boost if solar overall grows?
Hillary Clinton's renewable energy plan is ambitious but, on a technical level, doable. Would it foster more solar technology innovation?