The PureCell fuel cell solution from UTC Power uses clean, quiet fuel cell technology to generate 400 kW of electric power using natural gas as input fuel. In a fuel cell, no fossil fuel combustion takes place. The only byproduct of the process is heat, about 1.7 MMBtu per hour (or about 500 kW), that can be easily harnessed to provide space heating or domestic hot water, or with the addition of an optional absorption chiller can produce about 50 tons of cooling.