About 7.5 kilowatt hours is needed to charge the Powerwall, providing about 6.5 kilowatt hours of power once charged. With some utilities, consumers can choose between flat-rate electricity pricing (the price is the same no matter the time or day or demand on the electricity grid) and peak-rate pricing.
Myth or Truth: I need 8 glasses of water a day. Myth. The Institute of Medicine says adult men actually need about 13 cups (3 liters) per day of fluid; adult women need about 9 cups (2.2 liters) of fluid. (You get about an additional 2 1/2 cups of fluid from foods.).
Since then, The British Dietetic Association has declared that an average adult should drink 10.5 cups of water per day. Also, the Journal of the American Dietetic Association says the average sedentary man should drink 12 glasses of water a day, and the average sedentary woman 9 glasses per day. The truth is water is an essential nutrient for life.