Consumer & Gadgets

'Ocean battery' targets renewable energy dilemma

A wind turbine sitting idle on a calm day or spinning swiftly when power demand is already met poses a problem for renewables, and is one researchers think can be tackled under the sea.

Energy & Green Tech

New storage battery more efficient and heat-resistant

The share of energy from renewable sources is constantly on the rise in Germany. At the beginning of 2020, for the first time ever, renewable energy was able to cover more than half of the electricity consumed in Germany. ...

Energy & Green Tech

Touted as clean, 'blue' hydrogen may be worse than gas, coal

"Blue" hydrogen—an energy source that involves a process for making hydrogen by using methane in natural gas—is being lauded as a clean, green energy to help reduce global warming. But Cornell and Stanford University ...

Energy & Green Tech

Our next renewable energy source could be an artificial leaf

LSU researchers are exploring new ways to use the oldest energy source on our planet—sunlight—to create truly green energy on demand. You've already heard of solar cells and solar panels, but David Vinyard, assistant ...

Energy & Green Tech

Green-oriented NextEra nears ExxonMobil in market value

In a sign of shifting fortunes in the energy business, green-oriented power company NextEra Energy on Friday sparred with petroleum giant Exxon Mobil for market capitalization supremacy.

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Green energy

Green energy is the term used to describe sources of energy that are considered to be environmentally friendly and non-polluting, such as geothermal, wind, solar, and hydro. Sometimes nuclear power is also considered a green energy source. Green energy sources are often considered "green" because they are perceived to lower carbon emissions and create less pollution.

Green energy is commonly thought of in the context of electricity, mechanical power, heating and cogeneration. Consumers, businesses, and organizations may purchase green energy in order to support further development, help reduce the environmental impacts of conventional electricity generation, and increase their nation’s energy independence. Renewable energy certificates (green certificates or green tags) have been one way for consumers and businesses to support green energy.

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