# Power transmission

Power transmission is the movement of energy from its place of generation to a location where it is applied to perform useful work.

Power is defined formally as units of energy per unit time. In SI units:

${\displaystyle {\text{watt}}={\frac {\text{joule}}{\text{second}}}={\frac {{\text{newton}}\times {\text{meter}}}{\text{second}}}}$

Since the development of technology, transmission and storage systems have been of immense interest to technologists and technology users.