Express-News: CPS Energy’s new coal plant will save its customers money, but that savings will come at an environmental cost. Utility officials will tout J.K. Spruce 2 as one of the cleanest coal plants in the country at its dedication Monday, but even with state-of-the-art environmental controls, it still will spew thousands of tons of pollutants into the air every year. That doesn’t even include almost 6 million tons of carbon dioxide, which scientists say plays a major role in climate …