Example:
Solar energy ==> stored in chemical form in a tree as the tree grows 
 Chemical energy in the wood ==> released during burning
 Heat from the burning wood ==> absorbed by water, 
 makes the water boil
 Steam holds great energy as heat,
 steam pressure is used to turn a steam turbine
 Kinetic energy of the turbine turns an electric generator
 Electrical energy from the generator flows through
 cables to your house, is available at outlets
 You plug your battery charger into an outlet,
 electrical energy flows through the charger 
 into the rechargeable batteries, where it is
 stored until you want to use it.