Energy & Green Tech

New survey finds positive perceptions of solar projects

As solar energy development accelerates, how do Americans actually feel about those large scale solar, or LSS, farms they see along the highway or near their neighborhood? A new survey has found that for residents living ...

Business

California farmers are low on water: Why not help them go solar?

It sounds like a climate solution everyone should be able to support: Let's make it easier and cheaper for farmers with dwindling water supplies to convert their lands from crop production to solar energy generation, if that's ...

page 2 from 3

Solar energy

Solar energy is the radiant light and heat from the Sun that has been harnessed by humans since ancient times using a range of ever-evolving technologies. Solar radiation along with secondary solar resources such as wind and wave power, hydroelectricity and biomass account for most of the available renewable energy on Earth. Only a minuscule fraction of the available solar energy is used.

Solar power provides electrical generation by means of heat engines or photovoltaics. Once converted, its uses are limited only by human ingenuity. A partial list of solar applications includes space heating and cooling through solar architecture, potable water via distillation and disinfection, daylighting, hot water, thermal energy for cooking, and high temperature process heat for industrial purposes.

Solar technologies are broadly characterized as either passive solar or active solar depending on the way they capture, convert and distribute sunlight. Active solar techniques include the use of photovoltaic panels and solar thermal collectors (with electrical or mechanical equipment) to convert sunlight into useful outputs. Passive solar techniques include orienting a building to the Sun, selecting materials with favorable thermal mass or light dispersing properties, and designing spaces that naturally circulate air.

This text uses material from Wikipedia, licensed under CC BY-SA