Danbury-based FuelCell Energy has started commercial operation of its multi-megawatt SureSource 4000 fuel cell project on Triangle Street.  The power plant is the Company’s first deployment of this platform designed to extract more electrical power from each unit of fuel with electrical efficiency of approximately 60 percent.  FuelCell says the project will provide increased power reliability, grid resiliency, and economic development for the state without harmful particulates that are generated by combustion based technology.  The plant generates enough power for 37-hundred average sized homes, and requires only about 10-thousand square feet, or less than a quarter of an acre.