The ES Pipe Waterwheel concept by Ryan Jongwoo Choi works as a mini turbine to harness hydropower from regular water taps and converts it to energy. However this energy is for a specific use; to power specialized bulbs. The intended area of use is a country like Africa where there is severe power shortage. On paper, the idea looks good enough to execute, however how large scale can this go, remains to be seen.  ES Pipe Waterwheel is a 2012 IDEA awards entry.