General overview.- Hydrogen energy by environmetally friendly fuels.- Hydrogen production.- Utilization of biomass.- Utilization of biogas and methane dry reforming.- Ethanol reforming .- Methanol reforming.- Biodiesel.- Catalysis beyond biodiesel including fine chemistry.- Low Temperature methane combustion.- Reaction in Membranes and Catalysts.- PEMFC.- DMFC.- Photocatalysis and solar cells.- Direct utilization of solar energy.- Concluding remarks and future perspectives.