Marissa Gillett, Connecticut’s embattled chief utility regulator, has decided to resign, Gov. Her resignation comes after a top Republican state lawmaker demanded a probe of her conduct at the agency. In her letter to Lamont, Gillett said she decided to leave Connecticut’s Public Utility Regulatory Authority after deep reflection. In response, Lamont praised Gillett. As PURA’s chair for the past six years, Gillett had a contentious relationship with the state’s utility industry, especially over their rate hike requests.