The shrinking supply of Colorado River water is evident at the Hoover Dam on the border of Arizona and Nevada.
AP Photo/Ross D. Franklin
Taking millions of gallons of water permanently out of the Colorado River amid a prolonged drought would surely start an interstate fight.
Block Island Wind, the first offshore wind energy project in the U.S., started operation in 2016.
A recent survey of electric utility leaders finds that Trump administration efforts to promote coal energy and roll back air pollution regulations have had little impact on their long-range plans.
The coils winding facility building in France, where a global effort to build the ITER fusion energy reactor is underway.
As fusion becomes more technically viable, it's time to assess whether it's worth the money because breakthroughs in the lab don’t guarantee success in the marketplace.
Grid-scale energy storage systems may make it easier to rely completely on renewable energy.
Saving power to use later lets consumers, businesses and utilities generate energy when it's cheap and deliver it when they need it most. There's not much of it today, but the industry is growing fast.
The proton battery, connected to a voltmeter.
A new rechargeable 'proton battery' - made chiefly from carbon and water - promises to outperform conventional lithium-ion batteries, while also being more environmentally friendly.
Solar and wind compete with coal power plants when it comes to energy storage systems.
AP Photo/Mel Evans
Energy storage, such as big batteries, on the power grid is generally seen as 'green' technology but the reality is more complicated, an analysis finds.
A solar and battery-powered microgrid got San Juan’s Children’s Hospital quickly back online after Hurricane Maria.
Yes, Puerto Rico and any other storm-vulnerable location could benefit from on-site solar and battery backup, but it's unrealistic to say these microgrids are enough to power the island.
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.
Boron is often ignored, but it’s got a lot of important qualities.
Boron is the hidden ingredient in a lot of our technology. Get to know this plucky little element.
The UK is about to miss an opportunity if it tries to take on the giants of the lithium-ion battery industry.
The Maguga Dam in Swaziland. Many development challenges of dams are not as clear as critics suggest.
Dams are once again being recognised as important key contributors to a prosperous and sustainable future.
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.
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.
Social media might help you navigate the confusing world of sustainability.
Social media is a great way to to share tips, knowledge and expertise - including about how to reduce the environmental footprint of your home.
Batteries may be a good way to store energy in the home.
Battery image from www.shutterstoc.com
Batteries aren't the only type of storage, and all types of storage have their role to play in the future grid.
The Diablo Canyon nuclear power plant in California is closing and the state has committed to replacing it with greenhouse-free sources of electricity.
Can nuclear power plants like California Diablo Canyon be replaced without greatly raising emissions? It's an open question.
There are plenty of ways to cut energy use, especially in old houses.
AAP Image/Paul Miller
There are loads of things you can do to cut your energy bills - and many don't involve stumping up any cash up-front at all.
The closure of Port Augusta’s Northern Power Plant marks the end of coal-fired generation in South Australia.
Closure of the state's last coal power station will leave a potential gap in the electricity supply.
There’s a good reason to connected to the electricity distribution network.
Flickr/Indigo Skies Photography
If you're worried about rising electricity prices, then going off-grid sounds attractive. But why not create an intelligent network of solar-powerd batteries that can reduce prices for all?
We already have them in many sizes – but we're still looking for a battery to store truly large amounts of energy.