The Carlyle Group, a global investment firm, agreed to invest $100m in NineDot Energy, a developer of community-scale clean energy projects. "NineDot Energy thrives on developing innovative business models and projects that support a more resilient electric grid while simultaneously delivering economic savings and reducing carbon emissions. Carlyle’s investment will enable NineDot to further advance our leadership position in providing community clean energy solutions in New York and beyond," David Arfin, NineDot Energy CEO.