Energy generated by using wind, solar, small hydro, tides, geothermal heat and biomass is known a non-conventional energy. All these sources are renewable process of energy generation and do not cause environmental pollution. Standing Committee on Energy present this Twenty-nineth report on "Availability of Identified Non-conventional Resources of Energy – Their Potential vis-à-vis Utilization."
Links:
[1] http://admin.indiaenvironmentportal.org.in/reports-documents/availability-identified-non-conventional-resources-energy-%E2%80%93-their-potential-vis-%C3%A0
[2] http://admin.indiaenvironmentportal.org.in/category/publisher/lok-sabha-secretariat
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/renewable-energy
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wind-energy
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/small-hydro-power
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/solar-energy
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/biomass
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waste-energy
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tidal-energy
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/geothermal-energy