What is Energy?

Capability of performing work. Potential energy becomes kinetic when we use it. Energy can be converted into different forms. For example, a PV system converts solar energy to electrical energy. In accordance with the law of conservation of energy, the total amount of energy never changes. But conversion is always associated with some waste heat, which prevents 100% efficient conversion. SI unit of measure is Joule.

 

 

← Back to Solar Energy Glossary