…Peter Shattuck, Massachusetts director for Acadia Center, a Boston-based group that promotes clean energy efforts, said given what power usage data is showing around the region, it would be foolhardy to undertake a full-scale expansion of natural gas transmission pipelines. “There could be benefits to building natural gas pipelines, but there could be cheaper, quicker alternatives,” Shattuck said. “Demand is coming down and we’re seeing power plants install backup generation capability. We should be taking a few years to find out what is the lowest risk, most affordable solution…”