Pillar Three: Hydrogen Storage

As renewable energy is intermittent — the sun isn't always shining, the wind isn't always blowing. It is necessary to develop storage methods that store and convert this energy. Batteries, differentiated water pumping, and other methods can provide some storage capacity. One storage medium, hydrogen, is the universal method to store all forms of renewable energy, for both power generation and transport. Hydrogen is the lightest, most abundant element in the universe, and when used as an energy source, the only by-products are heat and water. Spaceships have been powered by high-tech hydrogen fuel cells for more than 30 years. When renewable energy is abundant, if electricity can be used to extract hydrogen from water, it can be stored for later use.