solar Archive

citiesOrbits and lighting levels for artificial moon satellite over China

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China Daily provided more details about the artificial full moon mirror satellite over Chengdu. This article is referring to Chinese statements about their mirror moonlight system and referencing a presentation “Mirrors in Dawn Dusk Orbit for Low-Cost Terrestrial Solar Electric …

chinaLighting up a megacity at night will lead to night solar farm lighting

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Chengdu plans to launch in 2020 a mirror satellite to create dusk lighting at night. The satellite will appear to be 8 times a full moon. They believe this will remove the need for most street lighting which will save …

coolingRenewable power of 2050 will be powering air conditioners

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The world has about 3.5 billion cooling appliances (fridges and air conditioners). That number is projected to grow to about 9.5 billion cooling appliances by 2050. If we actually want to deliver cooling for all, with no one left behind, …

californiaGermany and California could made a faster move to 100% clean power by adding instead of removing nuclear power

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California and Germany could have mostly or completely decarbonized their electricity if they have invested in nuclear power instead of solar and wind renewables. If Germany did not begin a nuclear power phase-out in 2011, then they would still have …

energyUsing 82 Terawatts of solar and wind to Green the Sahara as a side effect would cost at least $82 trillion

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Researchers simulated the effects of around 79 terawatts of solar panels and 3 terawatts of wind turbines. Computer modeling looked at the effect of covering 20 percent of the largest desert on the planet in solar panels and installing three …

desertCanada sized Solar and wind farms could make the Sahara Desert green again with double the rain

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A team of scientists has concluded that deploying solar and wind farms across the region that the Sahara encompasses will produce significantly more rain, and therefore, natural vegetation, in the areas that they would exist. In what the study refers …

energyFrance’s nuclear clean energy is over three times faster and cheaper than Germany’s solar and wind

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France completed construction on 76% of its current 58 reactors at an inflation-adjusted cost of $330 billion (€290 billion). The complete buildout of the 58 reactors was less €400 billion. Germany would need 50% more nuclear energy than France to …

energyNew silicon etching drops solar power costs by more than 10 percent

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Researchers have found a way to reduce production costs of solar cells by more than 10%. Switching the Silicon Used in Solar Cells for Renewable Energy Drops Costs Silicon is the standard light-capturing material used in solar photovoltaic (PV) cells. …

energyCheap perovskite boosts commercial solar cell energy conversion by 20%

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UCLA created a double layer solar cell by spraying a thin layer of perovskite onto a commercially available solar cell. The solar cell that forms the bottom layer of the device is made of a compound of copper, indium, gallium …

economic impactCubic miles of oil and hundreds of gigawatts per year of added electricity

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A cubic mile of oil per year is about 5.084 Terawatts per year with continuous power generation. making current world energy use around 15 TW. The world is using about 3.9 cubic miles of oil per year in electricity. The …