The major components of our energy systems, such as fuel production, refining, electrical generation and distribution, are costly installation that have lengthy life span.

To be able to provide 220VAC electrical power, solar power generation system needs to be issued by the exchange of DC can be converted into electrical energy, so need to use the DC-AC inverter.

Thermoelectric materials are the basis of thermal-electrical energy conversion (including thermoelectric power generation and refrigeration).