After a protracted legal battle, in which we represented wildlife protection groups and individual advocates, the controversial Cape Wind project has finally come to an end, with the project proponent formally relinquishing its federal lease last week. The poorly sited project would have been very harmful to migratory birds, including several listed as endangered or threatened, and would have also posed threats to whales, including the highly endangered right whale. On behalf of Public Employees for Environmental Responsibility, the Alliance to Protect Nantucket Sound, and others, we won a number of important legal battles since filing suit in 2010. Although development of renewable energy is vitally important, particularly in an era in which anti-science climate change skeptics occupy the highest rungs of political power, Cape Wind proved to be a cautionary tale of how not to transition away from our nation’s dependence on fossil fuels. Cape Wind’s formal notice of project abandonment is here.