| Abbreviation | Definition |
|---|---|
| NBEI | npower Business Energy Index |
| NCCR | Nuclear Cost Construction Recovery |
| NCE | normalized collision energy |
| NCEP | National Commission on Energy Policy |
| NCERD | National Center For Energy Research And Development |
| NCERD | National Centre for Energy Research and Development |
| NCRE | Non Conventional Renewable Energy |
| NCRE | North Carolina Renewable Energy |
| NCSES | National Conference on Smart Energy Systems |
| NDE | Non Descriptive Energy |
| NDEC | Notre Dame Energy Center |
| NE | Net Energy |
| NEA | National Electrification Administration |
| NEA | National Energy Administration |
| NEAC | National Energy Advisory Committee |
| NEAS | Energy AS |
| NEB | Nano Energy Booster |
| NEB | National Energy Board |
| NEB | Natural Energy Board |
| NEB | Net Energy Billing |