The Obama administration wants to rebuild the national electricity grid that delivers power to everyone’s toasters and televisions. One reason is that the grid can’t handle all the new solar and wind power the president wants to build to create a greener energy economy.

Here’s the problem: Solar and wind power are intermittent. Sometimes it’s sunny, sometimes it’s not, and it’s the same for wind. But the grid needs constant and reliable sources of power.

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Beyond the fishing boats, the snug homes and the tanks of diesel fuel marking this Eskimo village on the Bering Sea, three huge wind turbines tower over the tundra. Their blades spin slowly in a breeze cold enough to freeze skin.

One of the nation’s harshest landscapes, it turns out, is becoming fertile ground for green power.