Is EPA’s schedule for proposing power plant greenhouse gas standards slipping again? It depends on your definition of “early.”

The agency has for months said the rules – which the White House is currently vetting – would be proposed “early” in 2012 after missing several earlier deadlines.

EPA Administrator Lisa Jackson on Thursday told reporters that there’s no date yet for proposing the regulations, which would set first-time standards for new and modified power plants that run on coal, oil and natural gas.