Green Chip Stocks details some of the new ways to store electricity. This is an important feature for the creation of a smart grid. Currently, supply must always equal demand, as there’s no place to store it. This is inefficient and wasteful. With stored energy, power plants can create energy at night, when demand is low, then store it for use during the nest day.
New methods include pumped heat storage, ice storage, compressed air, and ammonia storage.