noun
power engineering
Technical field covering generation, transmission, distribution, and utilization of electric power.
彼は大学で電力工学を専攻している。
He is majoring in power engineering at university.
電気工学 (electrical engineering) is broader, covering electronics and circuits; 電力工学 focuses specifically on electric power systems.
Compound of 電力 (electric power) and 工学 (engineering).