A proposed transmission line that would transport hydropower from Quebec into the New England grid has sparked a costly ballot initiative fight in Maine. Environmentalists find themselves in the unusual position of being aligned with natural gas plant operators in opposing a renewable energy project supported by local officials and the Biden administration. POLITICO’s Jordan Wolman explains what’s at stake in Maine today. Annie Snider covers water issues for POLITICO Pro and is the host of POLITICO Energy. Jordan Wolman is a digital producer at POLITICO Nirmal Mulaikal is a POLITICO audio host-producer. Raghu Manavalan is the host-producer of the Playbook Daily Briefing and a senior editor for POLITICO audio. Irene Noguchi is the executive producer of POLITICO’s audio department.