I want to know why some persons like Pragya nopany consider hydro electricity as a demon. I think it is the cheapest and if it is limited to medium and small scale dimensions it can be very eco friendly too. Some innovations must be made so that even small and medium hydro electric works can be made more efficient so that problems of submergence, displacement of people etc. are kept to the minimum. I would like people more knowledgeable in this sphere to enlighten me about the possibilities and pitfalls.
