| Abbreviation | Definition |
|---|---|
| MAED | Made For Analyses Of Energy Demand |
| MAR | Mainline Alternative Route |
| MARVEL | Measured Active Rotational Vibrational Energy Levels |
| MBEF | Missourians for a Balanced Energy Future |
| MCE | Clean Energy |
| MCE | Main Character Energy |
| MCE | Marin Clean Energy |
| MCEC | Maryland Clean Energy Center |
| MCEE | Mewbourne College of Earth Energy |
| MCEP | Meadville Community Energy Project |
| MCPE | Market Clearing Price for Energy |
| MCPE | Market Clearing Prices For Energy |
| MCSEP | Missouri Comprehensive State Energy Plan |
| MDER | Minimum Dietary Energy Requirement |
| MDER | minimum dietary energy requirements |
| MDET | Medium Directional Energy Tool |
| MDFE | Molecular Dynamics Free Energy |
| ME | Matter Energy |
| MEA | Energy Association |
| MEA | Midwest ENERGY Association |