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Scientists Beam Solar Power to Earth from Space

Because solar energy in space isn''t subject to factors like day and night, obscuration by clouds, or weather on Earth, it is always available. Scientific American maintains a strict policy

Solar Power Lightens Up with Thin-Film Technology

The sun blasts Earth with enough energy in one hour—4.3 x 10 20 joules—to provide all of humanity''s energy needs for a year (4.1 x 10 20 joules), according to physicist Steven Chu, director of

The U.S. Energy Transition Explained in 8 Numbers

The amount of energy produced in 2023 by large solar projects was 130 percent more than the U.S. generated five years ago, and 16 percent more than in 2022, according to preliminary EIA...

2019 Was a Record Year for U.S. Solar Power

As the use of renewable energy, such as wind and solar power, continues to expand with the addition of electric cars and trucks, nations could plug the gaps in such variable energy sources by

Indoor photovoltaics awaken the world''s first solar cells

Here, we revisit the world''s oldest but long-ignored photovoltaic material with the emergence of indoor photovoltaics (IPVs); the absorption spectrum of Se perfectly matches the emission spectra of commonly used

Should the US switch to solar power?

Solar energy''s potential is off the chart, with the energy in sunlight striking the earth for 40 minutes being equivalent to global energy consumption for a year. Our analysis convinces us that a massive switch to solar power is the logical answer for the US to free itself from fossil fuels.

Is Space-Based Solar Power Ready for Its Moment in the Sun?

"Uniquely, space-based solar power can provide both baseload and dispatchable power at city scale and as such is a really valuable new clean-energy technology," says Martin Soltau, an analyst

How many concentrated solar power plants are there in the US?

There are nine concentrated solar power plants in the US with a total capacity of 354 megawatts (MW). These plants have been generating electricity reliably for years. A new 64-MW plant came online in Nevada in March 2007. However, they do not have heat storage.

Solar Energy and Solar Engines | Scientific American

A small fraction of the incident solar energy is usefully absorbed by the chlorophyl in the grasses, permitting them to build up a hydrocarbon structure '' from an environment of gaseous water and

This Material Could Squeeze More Energy from Solar Panels

In a recent report on the future of solar PV, the International Renewable Energy Agency (IRENA) described perovskite as "one of the most promising materials" in solar technology research today

Clean Energy Spending Will Surpass $2 Trillion This Year

Technicians from CP Solar work on the maintenance of solar panels at a partially solar-powered factory in the industrial area of Nairobi, on October 9, 2023. Renewable energy sources generate over

How to tap the sun''s energy through heat as well as light

A new approach to harvesting solar energy, developed by MIT researchers, could improve efficiency by using sunlight to heat a high-temperature material whose infrared radiation would then be collected by a conventional

Here Comes the Sun--A Grand Plan for Solar Energy

In this episode, Scientific American editor Mark Fischetti talks about an audacious new plan, featured in the January issue of Scientific American, for turning the US into a solar-powered country.

Could solar power supply the US by 2050?

A massive switch from coal, oil, natural gas and nuclear power plants to solar power plants could supply 69 percent of the U.S.''s electricity and 35 percent of its total energy by 2050. This would require the erection of a vast area of photovoltaic cells, primarily in the Southwest.

On the Conservation of Solar Energy | Scientific American

THE question of the maintenance of solar energy is one that has been looked upon with deep interest by astronomers and physicists from the time of La Place downward. Scientific American is

Green Hydrogen Could Fill Big Gaps in Renewable Energy

Current renewable technologies such as solar and wind can decarbonize the energy sector by as much as 85 percent by replacing gas and coal with clean electricity. Scientific American is part

Can North Africa Light Up Europe with Solar Power

Some North Africans see jobs and an end to instability Europe, Miled said, could "gain 10 to 15 years in the fight against climate change" by importing solar energy from North Africa, as well as

Are Engines the Future of Solar Power? | Scientific American

Nearly 200 years after their invention, and decades after first being proposed as a method of harnessing solar energy, 60 sun-powered Stirling engines are about to begin generating electricity

How has solar power changed the world?

Yet in that short time, solar power has revealed the Sun''s limitless potential to power an increasingly technological society. Since the 1950s, NASA has harnessed the energy of the Sun to power spacecraft and drive scientific discovery across our solar system. Today, NASA continues to advance solar panel technology and test new innovations.

This Biophysicist ''Sun Queen'' Harnessed Solar Power

Hungarian-American biophysicist and inventorMária Telkes illuminated the field of solar energy. She invented a solar oven, a solar desalination kit and, in the late 1940s, designed one of the

About Scientific american solar energy

About Scientific american solar energy

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