More specific terms
- NT Alternative energy resources
- NT Animal traction
- NT Conventional energy resources
- NT Electric power
- NT Energy conservation
- NT Energy consumption
- NT Energy economics
- NT Energy efficiency
- NT Energy needs
- NT Energy planning
- NT Energy policy
- NT Energy research
- NT Energy resource development
- NT Energy supply
- NT Energy technology
- NT Fuels
- NT Nonrenewable energy resources
- NT Renewable energy resources