Wyman boilers on Cousins Island, as well as the Mason Station plant in Wiscasset, Maine, are units brought back on line by Central Maine Power. Presumably turning on the dirtier plants will not increase nitrogen oxide emissions since the utilities are promising to offset the increases from the older plants with other actions. The Massachusetts Rule of June 1997 mandated that Massachusetts utilities offset the increased nitrogen oxide emissions.
Maine has no mandate.
CSE will continue to monitor and report on the region's air quality and other options for providing energy.