Energy & Green Tech

How West Africa can expand power supply and meet climate goals

Not too long ago, when the idea of solar and wind energy was still hotly debated, critics used to point out the limitations of these energy sources: the sun doesn't always shine and the wind doesn't always blow. But nowadays ...

Energy & Green Tech

Finding balance between green energy storage, harvesting

Generating power through wind or solar energy is dependent on the abundance of the right weather conditions, making finding the optimal strategy for storage crucial to the future of sustainable energy usage.

Energy & Green Tech

Inertia and the power grid: A guide without the spin

The power grid is evolving to include ever-higher levels of wind and solar generation—which do not provide inertia, historically a key source of grid reliability. Should system planners and operators panic? A new video ...

Engineering

New hybrid device can both capture and store solar energy

Researchers from the University of Houston have reported a new device that can both efficiently capture solar energy and store it until it is needed, offering promise for applications ranging from power generation to distillation ...

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

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 ...

Energy & Green Tech

Fossil fuels blown away by wind in cost terms: study

New onshore wind and solar energy projects are set to deliver electricity more cheaply than fossil fuels plants, with other green technologies also rapidly gaining a cost advantage over dirty fuels, a report published Saturday ...

Energy & Green Tech

Air pollution cuts solar energy potential in China

China is rapidly expanding its solar power supply, hoping to meet 10 percent of the nation's electricity needs with solar energy by 2030. But there's a problem: severe air pollution is blocking light from the sun, significantly ...

Energy & Green Tech

China investing heavily in two types of solar power

(Tech Xplore)—China has made it known to the world that it plans to move from coal-fired powered plants to those based on renewable resources as quickly as possible—the smog from coal plants and the huge amount of greenhouse ...

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