Energy & Green Tech

Connecting energy production and storage

The good news is that renewables account for nearly 50 percent of electricity generated in Germany. The bad news is that they lack the flexibility to adapt to the day's fluctuating electricity demand. They only furnish electrical ...

Semiconductors

Bending an organic semiconductor can boost electrical flow

Slightly bending semiconductors made of organic materials can roughly double the speed of electricity flowing through them and could benefit next-generation electronics such as sensors and solar cells, according to Rutgers-led ...

Business

Study shows regulators are allowing utilities higher returns

For many years, all electric utilities in the U.S. were regulated monopolies. Although some states deregulated electricity generation over the past 20 years, electric utility companies in other states today remain monopolies. ...

Energy & Green Tech

Wind power from the sky

Anyone who has ever steered a child's kite knows the feeling: The wind grips the kite and pulls the string. The string is quickly tensioned, the spindle rotates between the fingers and is difficult to control. The question ...

Energy & Green Tech

German power giant RWE aims for zero carbon by 2040

German energy giant RWE said Monday it aims to achieve carbon neutrality by 2040, winding up fossil-fuel activities while building up renewable generation, after taking over parts of competitor EON.

Energy & Green Tech

Device generates light from the cold night sky

An inexpensive thermoelectric device harnesses the cold of space without active heat input, generating electricity that powers an LED at night, researchers report September 12 in the journal Joule.

Energy & Green Tech

Photovoltaics could cool our homes with the power of the sun

The International Energy Agency has dubbed increased global cooling demand as one of the most critical blind spots in today's energy debate. A new study titled "Meeting Increased Global Cooling Demand with Photovoltaics during ...

Energy & Green Tech

Europe's future is renewable

Europe has enough solar and wind resources to meet its electricity demand entirely from renewable sources. A new study by researchers at the Institute for Transformative Sustainability Research (IASS) in Potsdam shows that ...

Engineering

An implantable device that produces energy using ultrasound

A team of researchers affiliated with several institutions in the Republic of Korea has developed a type of implantable device that produces energy using an external ultrasound source. In their paper published in the journal ...

Energy & Green Tech

Pioneering 3-D printed device sets new record for efficiency

A new 3-D printed thermoelectric device, which converts heat into electric power with an efficiency factor over 50% higher than the previous best for printed materials—and is cheap to produce in bulk—has been manufactured ...

Energy & Green Tech

U.S. energy use rises to highest level ever

Americans used more energy in 2018 than in any other year, according to the most recent energy flow charts released by Lawrence Livermore National Laboratory (LLNL). Overall total energy consumption rose to 101.2 quadrillion ...

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