- energy efficiency labeling
- energy efficiency management
- energy efficiency of animal house
- energy efficiency of mechanical manufacturing system
- energy-efficient computing
- energy-efficient sensing
- energy elasticity index
- energy equality
- energy equation
- energy equation of fluid motion
- energy equation of water flow
- energy equilibrium
- energy equilibrium test
- energy equipartition
- energy equivalent
- energy equivalent factors
- energy equivalent of calorimeter
- energy exchange
- energy feed
- energy-filtered diffraction
- energy-filtered image
- Energy Finance
- energy finite element analysis
- energy flow
- energy flow and material cycles in aquaculture system