power generation efficiency; generating efficiency
Technical term used in energy engineering to describe how effectively a system converts an energy source into electricity.
This new type of solar panel has very high power generation efficiency.
We reviewed the turbine design to improve generating efficiency.
エネルギー効率 is a broader term for overall energy efficiency, while 発電効率 specifically refers to the efficiency of electricity generation.
Compound of 発電 (power generation) and 効率 (efficiency).