Engineers are developing an unusual tower to store renewable energy from wind turbines and solar panels. It works according to the same principle as pumped-storage hydroelectric plants, and releases energy when it's needed.
The German Economy Ministry has held a summit to discuss a dramatic slowdown in the wind energy sector that's threatening agreed climate goals. The problems are due to policy mistakes and growing public resistance.
The German government and wind energy industry representatives have been meeting recently to hammer out a way of reinvigorating the sector. But the future of this once thriving industry is blowing in the wind.
If the world is to quit coal and gas for renewable energy sources, they have to be reliable and affordable. Is that realistic? Researchers have crunched the numbers and come up with some surprising answers.
Russian hydropower company RusHydro has launched a wind power plant in Russia’s Arctic region. It's far from a signal that fossil-fuel-hungry Russia is going green, but it's a start.
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