NYT:

With nearly two months before Election Day on Nov. 6, estimated spending on television ads promoting coal and more oil and gas drilling or criticizing clean energy has exceeded $153 million this year, according to an analysis by The New York Times of 138 ads on energy issues broadcast this year by the presidential campaigns, political parties, energy companies, trade associations and third-party spenders.

That tally is nearly four times the $41 million spent by clean-energy advocates, the Obama campaign and Democratic groups to defend the president’s energy record or raise concerns about global warming and air pollution. The Times rated presidential campaign and national policy ads by whether they promoted fossil fuels or pushed clean energy and conservation, regardless of their sponsors, using ad and spending data compiled by Kantar Media, a company that tracks television advertising.