In 2018, the Sustainable Development Solutions Network published a detailed road map for achieving the Northeast’s goal of reducing GHG emissions 80% or more below 1990 levels by 2050 while maintaining high standards of living and economic growth. A key objective of the study was to investigate the potential for cost savings from increased coordination between the Northeastern U.S. and Québec, including development of Québec’s hydro and/or wind resources as well as increases in transmission capacity to complement massive renewable energy buildout and battery storage in Northeastern states.