That is possible but it may not be running full load. Also I would need to know the btu value of the coal and the efficiency of the unit to make a realistic estimate of fuel usage.
Stakes in the operation have been sold recently so someone sees a future in the plant. It will shut down and that should have a focusing effect on a bunch of people. This baby is too big to let go. Las Vegas will lose 6% of their power but new gas plants are coming online. The big loser will be SoCal.