Clean Coal = Greenwash

Poster of CNN Democratic Debate from Coal is Dirty article of May 31, Clean Coal = Greenwash by Kate Rooth, who is active on Greenpeace's Stop Greenwashing project.

DeSmog Project, Rainforest Action Network and Greenpeace USA have teamed up to shed light on the coal industry's attempts to shape public opinion through their website, Coal is Dirty.
The May 31 entry, while not aspiring for balance, documents a pr campaign which has included the funding of the presidential debates.

I was able to find the Business Wire announcement, "New Multi-Industry Coalition Aligns to Advocate Energy Security and Environmental Stewardship:"

More than 40 leading U.S. companies from the electricity generation, transportation, coal production, energy technology, and equipment manufacturing industries have aligned to create the American Coalition for Clean Coal Electricity (ACCCE)...support public policies...[that]advance environmental improvement, economic prosperity, and energy security.
For more information on front groups See Full Frontal Scrutiny , joint project of Consumer Reports WebWatch and the Center for Media and Democracy which reports that
expenditures is $5 million paid to CNN for advertising and co-sponsorship of at least six presidential debates.