Forest Canopy

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  • ... Crypt/Flickr/Creative Commons License If you read enough news articles about renewable energy development, eventually you'll see a ... will produce X megawatts of electricity, enough to power X thousand homes ." Reporters are generally encouraged ...
  • ... In some places on the planet, the crust is either thin enough or fractured enough that some of that heat comes close to the surface. Geothermal electricity is created by using this heat to ...
  • ... doing without. Privation. Freezing in the dark. The good news is that we can conserve energy without giving up much in the way of creature comforts. In fact, we can conserve enough energy that it will save us a lot of money, freeing that cash up for ...
  • ... renewable energy, but its meaning isn't particularly easy to guess at. Most often you'll hear it in arguments over whether rooftop ... transmission, and consumption. As we note in our explainer on The Grid, the traditional electricity transmission model ...
  • ... the United States we use a lot of energy to move people and cargo from place to place. In 2010, about 28 percent ... to convert our cars and trucks to renewable power sources come in two basic forms: electric vehicles and ... electric car batteries to less than an hour. If enough charging stations are built in a large area, long trips could be ...
  • ... all those intermediary steps. We use two basic methods to harness the energy of the sun that directly: photovoltaics (PV) and solar ... the first satellites. The first PV units that were cheap enough to be commercially viable appeared in the early 1970s, and their ...
  • ... turbines take the mechanical energy of the wind and use it to spin a mechanism (blades, a cage, or other design) that turns a generator, ... designed in the late 19th Century. As of June 2012, wind power accounts for three percent of the US's total electrical generation, and ...
  • ... turbines take the mechanical energy of the wind and use it to spin a mechanism (blades, a cage, or other design) that turns a generator, ... designed in the late 19th Century. As of June 2012, wind power accounts for three percent of the US's total electrical generation, and ...
  • ... {"additionalClasses":""}]It takes energy to make energy | Photo: Pedro Szekely/Flickr/Creative Commons ... diesel that powers coal mining machinery, to the power to charge cordless drills for installing rooftop solar. The ... EROEI is not an exact science. It's straightforward enough to figure out that the power used to operate an oil rig ...
  • ... Commons License   In order to describe the amount of electrical power put out by a source of renewable energy people often make reference ... (watts). It's not a perfect metaphor, but it's close enough . A watt is the power generated by one ampere of current flowing at ...

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