Power Engineering is focused on the design of large-scale systems for the generation, transmission and distribution of electricity. Electrical power is an energy source created from electrical charge and Power Engineering focuses on these large-scale applications involving extremely high current and voltage.

The process of generating, transferring and distributing large amounts of power is a necessity for modern society, yet difficult and so Power Engineers provide solutions to these difficulties. Conversion between DC and AC power is a requirement when distributing electricity to residential areas. Some Power Engineers work on generating the power that enters the electricity grid, while others design transformers, generators and motors that utilize or modify this power.