
Solar energy is and from the that is harnessed using a range of technologies such as to generate , (including ), and . It is an essential source of , and its technologies are broadly characterized as either or active solar depending on how they capture and distribute sola.

Energy storage is the capture of produced at one time for use at a later time to reduce imbalances between energy demand and energy production. A device that stores energy is generally called an or . Energy comes in multiple forms including radiation, , , , electricity, elevated temperature, and . En.