solar Archive

batteriesMolten Salt Heat Energy Storage and Efficiency of Conversion of Heat to Electricity

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MIT researchers have a new energy storage design that will store heat generated by excess electricity from solar or wind power in large tanks of white-hot molten silicon. It converts the light from the glowing metal back into electricity to …

climateAverage American Family Emits Over Four Hot Air Balloon Volumes of CO2 per Year

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The UN Emissions Gap Report shows that global emissions have reached another record high level of 53.5 billion tons of CO2 equivalent. Only 57 countries (representing 60 percent of global emissions) are on track to reach a peak in emissions …

carbon nanotubesSelf-Assembled Carbon Nanotube Antennas for Solar Power Revolution

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NovaSolix’s carbon nanotube (CNT) antennas are small enough to match the nano-scale wavelengths of sunlight. Antennas can convert electromagnetic spectrum much more efficiently than photovoltaic (PV) cells. When perfected, NovaSolix antennas will capture over four times the energy of current …

energyHigh-performance solar cells with lower cost

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Chinese researchers have developed solar cells which are high efficiency and lower cost. Nano Energy Journal – Modulation-doped ZnO as high performance electron-selective layer for efficient silicon heterojunction solar cells Highlights • The Li-doped ZnO (Li-ZnO) layer was fabricated by …

energyRenewable energy will be equal or cheaper than fossil fuels in 2020

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The International Renewable Energy Agency (IRENA) believes wind and solar will be equal or cheaper than fossil fuels by 2020. Prices could be as low as three cents per kilowatt-hour for onshore wind and solar photovoltaic projects over the next …

energyCarbon Fiber Mirror building block for space based solar power

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Lightweight parabolic mirrors for solar concentrators have been fabricated using carbon fiber reinforced polymer (CFRP) and a nanometer scale optical surface smoothing technique. The smoothing technique improved the surface roughness of the CFRP surface from ~3 micron root mean square …

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 …