Section 4(4) in The Central Electricity Regulatory Commission (Terms And Conditions For Tariff Determination From Renewable Energy Sources) Regulations, 2009
(4)Non-fossil fuel based co-generation project.-The project shall qualify to be termed as a non-fossil fuel based co-generation project, if it is using new plant and machinery and is in accordance with the definition and also meets the qualifying requirement outlined below:Topping cycle mode of co-generation.-Any facility that uses non-fossil fuel input for the power generation and also utilizes the thermal energy generated for useful heat applications in other industrial activities simultaneously:Provided that for the co-generation facility to qualify under topping cycle mode, the sum of useful power output and one half the useful thermal output be greater than 45% of the facility's energy consumption, during season."Explanation.-For the purposes of this clause,-(a)"Useful power output" is the gross electrical output from the generator. There will be an auxiliary consumption in the cogeneration plant itself (e.g., the boiler feed pump and the FD/ID fans). In order to compute the net power output it would be necessary to subtract the auxiliary consumption from the gross output. For simplicity of calculation, the useful power output is defined as the gross electricity (kWh) output from the generator.(b)"Useful Thermal Output" is the useful heat (steam) that is provided to the process by the cogeneration facility.(c)"Energy Consumption" of the facility is the useful energy input that is supplied by the fuel (normally bagasse or other such biomass fuel).
