The project, first proposed in Nantucket Sound eight years ago, has been mired in changing federal regulatory regimes, overlapping state and local government bureaucracies, local opposition and lawsuits. Cape Wind appeared to clear a final state-level milestone in May – though new concerns have cropped up – and was awaiting approval from US Interior Secretary Ken Salazar, whose Minerals Management Service issued a favourable environmental impact statement in January.

“Approving