energy
- Tech
Can a wind tree for 70,000 euros compete with photovoltaics?
A wind tree with 36 leaf-shaped microturbines is intended to provide electricity even in low winds – around the clock,…
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Researchers obtain hydrogen from battery acid and plastic
Only 18 percent of the world’s plastic waste is recycled. The rest puts a strain on ecosystems. A team of…
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Why returns are often disappointing
A mini wind turbine sounds like a clever addition to the solar system on the roof. But consumer advocates are…
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Australia’s home storage boom: capacity increases fivefold
Australia reached a tipping point in home storage in 2025: 221,000 new systems, a fivefold increase in installed capacity and…
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This is how quickly a balcony power plant pays off
Self-produced electricity, directly from the balcony: Balcony power plants make this possible for as little as 200 euros. But since…
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China is building a solar power plant at an altitude of 4,550 meters in Tibet
One of the highest solar power plants in the world is being built on the Tibetan plateau. At an altitude…
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400-year-old lead ammunition provides raw material for solar cells
Lead ammunition from the 17th century as a raw material for modern solar cells? Researchers have implemented what sounds absurd…
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Three gigawatts disappear in seconds
Every evening at 10 p.m. sharp, something unusual happens in the European power grid: the frequency fluctuates to critical limits.…
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Balcony power plant standards allow 7,000 watts – but only 800 feed-in
A new VDE guideline for plug-in solar devices allows module outputs of up to 7,000 watts for balcony power plants…
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Researchers capture the sun – solar battery solves energy problem
The solar heat goes down with the sunset. But that could soon change. A new solar battery promises to store…
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