By Ben Geman - 07/12/12 10:21 AM EDT
Similar ads are targeting Reps. Lou Barletta (R-Pa.) and Frank Guinta (R-N.H.). All three of the lawmakers defeated incumbent Democrats in the 2010 elections.
The wind credit is slated to expire at the end of the year, and uncertainty around its extension has already begun prompting layoffs along the wind project supply chain, industry officials say.
New wind power installations have decreased sharply when the credit has been allowed to lapse in the past, which last happened in 2004.
President Obama is pressing Congress to extend the incentive, but its fate on Capitol Hill remains uncertain.
The TV and radio ads will run for three weeks. The Sierra Club said the new effort is a “high saturation” ad buy, but declined to disclose the cost.
A spokeswoman for the group said in an email that the ad buy is aimed at “news and information” audiences, which overlap with likely voters.
People who watch at least one hour of cable news in the morning, afternoon or night will see the ads an average of 12 times a week, according to Sierra Club spokeswoman Maggie Kao.