Desert Road

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  • ... {"additionalClasses":""}] PV at the California Academy of Sciences | Photo:  Mitzi Young /Flickr/ ... of geothermal and tidal energy, most renewable energy is solar at its root. Wind is caused by the sun heating the air. Biomass stems ... sun that directly: photovoltaics ( PV ) and solar thermal . In PV , sunlight strikes semiconductors that turn light into ...
  • ... transmission, and consumption. As we note in  our explainer on The Grid , the traditional electricity transmission model ... As  photovoltaic  cells drop in price and more PV installations bloom in urban areas, the resulting increased emphasis on ...
  • ... K Ali /Flickr/ Creative Commons License News stories about renewable energy installations -- or other power plants, ... amount of power produced in a year. 500 megawatts of PV will more likely produce something like 800,000 megawatt-hours of power in ...
  • ... actually relies on subsoil and bedrock functioning as a thermal mass. A ground source heat pump moves air from a building through a ...
  • ... but people in many places around the world rely on solar energy for heating, using rooftop sunlight to heat water or air. This ... thermal hybrid " (PVT). It's long been known that PV cells lose efficiency when they heat past a certain point; PVT systems use ...
  • ... them to electrical power -- a record for silicon-based PV cells, and better than most high-efficiency thin-film PV panels. ... upcoming issue of the IEEE Journal of Photovoltaics. ReWire is dedicated to covering renewable energy in California. Keep in ...
  • ... the power to charge cordless drills for installing rooftop solar . The concept is referred to in renewable energy circles as "energy ... investment per unit drops as more are built, but in 2010 PV's EROEI was slightly above 6. Biomass comes in even less efficient: ...
  • ... /Flickr/ Creative Commons License Solar and wind power are intermittent. When the sun goes down, or when the ... frequency of charge cycles will lower that lifespan. Thermal Storage: some solar thermal facilities on the drawing board ...
  • ... without. Privation. Freezing in the dark. The good news is that we can conserve energy without giving up much in the way of ...
  • ... Creative Commons License If you read enough news articles about renewable energy development, eventually you'll see a ... for maintenance. Sometimes a cloud will drift over the solar cells, reducing their output by a varying percentage. And for about ...

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