Five industrial wind turbines form part of the Gorona del Viento power plant on the island of El Hierro. By the end of this year, the power plant is set to generate 100 percent of the energy El Hierro needs, making it the world's first energy-independent island powered only by renewables. Lauren Frayer for NPR hide caption

itoggle caption Lauren Frayer for NPR

An engineer oversees the gas distribution system of Hungary's gas pipeline operator FGSZ in Kiskundorozsma, in August. The distributor announced that it would cut off gas supplies to Ukraine. Laszlo Balogh/Reuters/Landov hide caption

itoggle caption Laszlo Balogh/Reuters/Landov

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

itoggle caption Jeff Brady /NPR

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

itoggle caption Dan Boyce/Inside Energy

Pump jacks are seen in an oil field over the Monterey Shale formation near Lost Hills, Calif. Much of the U.S. oil industry wants to lift an export ban that followed the 1970s energy crisis. David McNew/Getty Images hide caption

itoggle caption David McNew/Getty Images

A soldier guards a pipe en route to the Kawergosk Refinery near Irbil, the capital of the autonomous Kurdish region of northern Iraq, in July. Fighting in northern Iraq forced the closure of the country's largest oil refinery, Baiji, and cut production from the Kirkuk oil field this summer. Safin Hamed/AFP/Getty Images hide caption

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German driver Nick Heidfeld of Venturi Formula E Team. The all-electric cars can go from zero to 60 in under 3 seconds, and reach top speeds of over 150 mph. How Hwee Young/EPA/Landov hide caption

itoggle caption How Hwee Young/EPA/Landov

A worker repairs electrical lines in Plainview, N.Y., after Superstorm Sandy in 2012. A proposed plan to overhaul the state's power grid could help the system better withstand severe weather and enable energy to be stored and managed more efficiently. Bruce Bennett/Getty Images hide caption

itoggle caption Bruce Bennett/Getty Images

When Dawn Gioia first received a request to lease mineral rights under her home, in a downtown neighborhood in Brighton, Colo., she thought it was a scam. Lesley McClurg/Colorado Public Radio hide caption

itoggle caption Lesley McClurg/Colorado Public Radio

At the Pittsburgh International Airport, Consol Energy will begin extracting gas — even under the runways. MeRyan/Wikimedia Commons hide caption

itoggle caption MeRyan/Wikimedia Commons