The biggest battery project in New York has been canceled in a major victory for the nascent nationwide grassroots movement against energy storage development. It’s still a mystery why exactly the developer of Staten Island’s Swiftsure project, Fullmark Energy (formerly known as Hecate), pulled the plug. We do know a few key details: First, Fullmark did not announce publicly that it was killing the project, instead quietly submitting a short, one-page withdrawal letter to the New York Sta...