Billionaire hedge fund manager and green power advocate Tom Steyer is taking Gov. Scott Walker to task, accusing the Republican presidential hopeful of being a pawn for fossil fuel interests and a climate change denier.

Anyone surprised at this? Naturally Big Climate Change will be doing all they can to keep the gravy train running.

The group calls out Walker specifically for staying silent on the issue and for signing a Koch-backed pledge called the “No Climate Tax Pledge,”

Signers of the pledge, now numbering 411, promise to “oppose any legislation relating to climate change that includes a net increase in government revenue” — in other words, no legislation on climate change without an equivalent amount of tax cuts.

A quarter of U.S. senators and more than one-third of U.S. representatives have signed on to the pledge, including the entire GOP House leadership.

In a full page ad running in the Wisconsin State Journal Tuesday, Steyer’s group NextGen Climate blasts the state’s GOP leadership for promoting a “war on science” by banning work on climate change.

“Fossil fuel interests like the Koch Brothers have made millions while opposing solutions to climate change,” the ad says. “They’re protecting their profits by bankrolling Big Oil politicians like Scott Walker.”

I guess the irony of Obama’s reckless funding of failed green energy schemes escapes them,

NextGen Climate has vowed to follow Walker as he visits key presidential states.

A native New Yorker now residing in San Francisco, Steyer has come under fire from the right for making some of his money off the Asian and Australian coal markets. He retired from the money management business in 2012 and has an estimated net worth of $1.6 billion.