From the figure 2 it is apparent that the amount of energy produced by renewable sources is very less and that will not change if we do not take necessary steps right away. Now we face the environmental challenges these fossil fuel based power production give us, we look for environment friendly technologies for a solution. Small water current turbine could be a solution along with all the other renewable sources for future. The global energy demand is on the rise, it’s increasing and this can’t be stopped for the need of people of a better life