Reuters: U.S. power generating companies would get free pollution permits, at least initially, as part of a compromise climate change bill being written in the Senate that also would give the coal industry $10 billion to develop "clean" technology, sources said on Friday. Democratic Senator John Kerry is trying to push a bill through a skeptical Senate this year that would address global warming by reducing the 6.4 billion tons of greenhouse gas emissions the U.S. puts into the atmosphere …