Cogeneration is a called as combined heat and power or combine heat and power. As it name indicates cogeneration works on concept of producing two different form of energy by using one single source of fuel. Out of these two forms one must be heat or therHow Electricity is Prodused from Thermal Power Plant? Actions occurring in thermal power plants.mal energy and other one is either electrical or mechanical energy. Cogeneration is the most optimum,reliable, clean and efficient way of utilizing fuel.