... or on maneuvers with the army. So you can use it as unlimited source of free energy from sun. ... Daily life usingTake tea drinking as sample in UK, which is a national institution, we down an amazing 1909 cups of ... kWh per day or 1056 tones of CO2 a day from electricity use, the equivalent to about 149 000 cars, ... can focus the sun into the bottle, therefore may use it to keep the water hot in the wild, ...