ClimateWire: Interest groups recently have rolled out a proliferating number of price tags for the Obama administration's new limits on power plant carbon emissions. The estimates are often vastly different -- some call the rule affordable; others determine it will be costly. Nonetheless, they are already ammunition for politicians debating the Clean Power Plan on both sides of the aisle.
For example, an analysis backed by the American Coalition for Clean Coal Electricity found the energy sector will spend...