Spain’s monthly wind-power output exceeded 6 terawatt-hours for the first time this month, enough to light most households, the nation’s wind lobby group said.

The milestone was passed yesterday from 3 p.m. to 4 p.m. local time, the Spanish Wind Energy Association said today in an e-mailed statement, citing data from Red Electrica de Espana, the grid operator.

“Since Nov. 1, wind has been the top technology in the electrical system,” the lobby group said in a blog posting. “The last time any technology exceeded 6 terawatt-hours of monthly generation was in 2010, when it was combined-cycle gas turbines.”

Iberdrola SA (IBE)Acciona SA (ANA) and other wind operators have built plants in Spain as the government seeks to meet energy demand without adding to emissions. The country is ranked fourth in the world in terms of installed wind power, after the U.S., Germany and China, according to the industry association.

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