With the Federal Energy Regulatory Commission’s (FERC) much-awaited final rule on Transmission Planning and Cost Allocation imminent, New England’s grid operator, ISO-NE, quietly prepared to file at FERC its own hugely consequential, self-initiated Longer-Term Transmission Planning (LTTP) reforms. The problem it seeks to address? With peak demand for electricity set to double to 51 – 57 GW in the region by 2050, planners recognize the current grid’s transmission capabilities are ill-equipped to ensure reliability while handling the transition to an emissions-free electricity sector. ISO’s LTTP filing establishes a framework for procuring, building, and funding transmission projects and follows the inception of a new paradigm for long-term electric system planning. Combined, these solutions promise to propel us towards the much-needed build-out of the future grid and help us reach urgent state energy and climate policy requirements. In recognition, Advanced Energy United, along with a number of other allied organizations, wrote to ISO-NE and the New England States Committee on Electricity (NESCOE), commending their efforts while urging them to leverage this process as soon as it is effective.