Since the initiative began in 2008, it has led to reduced emissions and lower energy prices, said Peter Shattuck, director of the clean energy initiative at the Acadia Center, an environmental advocacy group in Boston.

“While there may be some offsetting increases in emissions beyond Massachusetts’ border, the Commonwealth has to set its own policy course,” Shattuck said. “If we’d been looking over [our] shoulder at what other states were doing, we might never have pursued health care reform, marriage equality, or the Global Warming Solutions Act itself.”

Read the full article from the Boston Globe here.