New Jersey Gov. Phil Murphy has signed an executive order for the state to rejoin the Regional Greenhouse Gas Initiative (RGGI), a mandatory cap-and-trade program among nine other Mid-Atlantic and New England states to reduce power sector emissions. Former Republican Gov. Chris Christie withdrew from the initiative in 2015. Murphy, a Democrat who was recently sworn-in, also released an energy transition report that calls for more renewable energy, fighting climate change, environmental justice efforts and better protection for water resources. The developments come as PennEast, a major pipeline project to deliver more natural gas to the state is set for an environmental review. The RGGI could soon expand again, as Virginia’s new Democratic Gov. Ralph Northam has indicated his interest to join, which would make it the first in the South to cap carbon.