We can only get sunlight in the daytime. It is becomes one of the main problems in solar technology and cost. Of course, the best way to get the energy from sunlight is by collecting and saving it. Therefore, sunlight energy storage is needed. With the energy storage, the energy can be saved and transmitted when it is needed. Until nowadays, solar energy storage still becomes a problem on solar technology and cost development.

 

Solar two is one of the methods of energy storage. Each tank of solar two is able to store solar energy in 68 meter cubic storage tank. Salts become one of the effective solar energy storage because it has high capacity and it requires low solar technology and cost. Hydroelectricity is another method for solar energy storage. The heat from the sun is used to boil water and the water is saved on the storage. When it is needed, the water will be pumped to move a turbine.
 
To create more effective solar energy storage, scientists are trying to combine several methods into a single method. Until nowadays, scientists are still trying to create best storage system. With good storage, solar technology and cost will not be a problem. We could create technology for commercial and residential area with low cost.