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Renewable energy sources — such as the Eolo wind park about 75 miles south of the Nicaraguan capital, Managua — generate about half of the country's electricity. Officials predict that figure could rise to 80 percent within years. Inti Ocon/AFP/Getty Images hide caption

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Inti Ocon/AFP/Getty Images

Nicaragua's Renewable Energy Revolution Picks Up Steam

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Without horsepower, they rely on human power: Mother and daughter-in-law Sheela and Sunita Devi shred sugarcane into feed. Ibrahim Malik for NPR hide caption

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Ibrahim Malik for NPR

What's It Like To Live Without Electricity? Ask An Indian Villager

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Elizabeth Ebinger in Maplewood, N.J., bought her solar panels, while neighbor Tim Roebuck signed a 20-year lease. Both are happy with the approach they took, and both are saving money on energy bills. Jeff Brady/NPR hide caption

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Jeff Brady/NPR

The Great Solar Panel Debate: To Lease Or To Buy?

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A worker installs solar panels atop a government building in Lakewood, Colo. The industry has added more than 80,000 jobs since 2010, according to The Solar Foundation. John Moore/Getty Images hide caption

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John Moore/Getty Images

U.S. Solar Industry Sees Growth, But Also Some Uncertainty

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Solar energy panels on a roof in Marshfield, Mass. Stephan Savoia/AP hide caption

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Stephan Savoia/AP

Should Homeowners With Solar Panels Pay To Maintain Electrical Grid?

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Vera Cole is president of the Mid-Atlantic Renewable Energy Association, a group arguing against proposed rules in Pennsylvania that would put stricter limits on how much grid-connected solar power homeowners can produce on their property. Jeff Brady /NPR hide caption

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Jeff Brady /NPR

Solar Advocates Fight Utilities Over Grid Access

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In Del Norte, Colo., Public Works Supervisor Kevin Larimore shows off solar panels that provide electricity for the town's water supply. Despite generating its own solar energy, the town is still at risk of a blackout if its main power line goes down. Dan Boyce/Inside Energy hide caption

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Dan Boyce/Inside Energy

When The Power's Out, Solar Panels May Not Keep The Lights On

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Solar sponge: The top layer of graphite soaks up the sun's energy in tiny holes. When drops of liquid fill the holes, the water quickly evaporates. (The beaker looks hot, but the water below the sponge is cool as a cucumber.) Courtesy of George Ni/MIT hide caption

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Courtesy of George Ni/MIT

The Solar Impulse takes off from Moffett Field NASA Ames Research Center in Mountain View, Calif., Friday, as a team member rides an electric bike alongside the plane. AFP/AFP/Getty Images hide caption

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AFP/AFP/Getty Images

The Solar Impulse, a solar-powered plane, flies over Switzerland. The makers will be journeying across the U.S. this spring, hoping the flight helps challenge assumptions about what solar technology can do. Courtesy of Solar Impulse hide caption

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Courtesy of Solar Impulse