While there is no doubt that wind, solar and geothermal have ample energy to power the planet--the sunlight that hits Earth in a single hour contains enough energy to fuel the human population for a year--they will need years to mature before they reach anything approaching their potential. Oil has had more than a century to mature, and its shortcomings remain painfully obvious even now.
The "cubic mile of oil"--a metric roughly equivalent to the amount of oil consumed worldwide each year--is frequently used to explain the challenge facing solar, wind, geothermal and biomass power.
So what would it take to replace the amount of energy in a cubic mile of oil? Roughly 4.2 billion solar rooftops, 3 million wind turbines, 2,500 nuclear power plants or 200 Three Gorges Dams, according to
Till that time we can use the renewable energy as effectively and responsibly as possible. One of the most effective and Highly Efficient is Solar Thermal.
Committee on the Environment Forum: Enlightened Spaces: Solar Thermal Presentation
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Cost: None; this program open to all. Please RSVP.
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