energy is the most important thing we need almost everyday to run our life without problems and hardwork.
for example we can use the energy to run well for the water .
using energy to light our darkens nights .
using energy to travel like battery cycles which helps in traveling and maintaining health.
as you have said 100 Watts this would be so lovely thing
KiweeOne is a light wind turbine associated with a kite! It can supply you with energy wherever you are out in nature, and not only that, the energy can be stored for later use!! It can produce electricity day and night, or even in a cloudy weather!! It can produce 100 watts since its flying, with the energy can consumed instant, stored, or both at the same time!!