| Abbreviation | Definition |
|---|---|
| DERMA | Distributed Energy Resources Memorandum Account |
| DERP | Distributed Energy Resource Provider |
| DERPA | Distributed Energy Resource Provider Agreement |
| DES | Dark Energy Survey |
| DESA | Discrete Energy Separation algorithm |
| DESC | Distributed Energy Systems Corporation |
| DESI | Dark Energy Spectroscopic Instrument |
| DESI | Diversified Energy Services Inc |
| DESM | Deemed Energy Savings Method |
| DESM | Directed Energy Sea Mammals |
| DESS | District Energy Sharing System |
| DETAILS | Dexterity Energy Tenacity Agility Intelligence Life And Strength |
| DETL | Distributed Energy Technologies Laboratory |
| DETL | Distributed Energy Technology Laboratory |
| DEUI | Daily Energy Use Index |
| DEUS | Department of Energy Utilities and Sustainability |
| DEUSS | Dark Energy Universe Simulation Series |
| DEV | Dance Energy Virus |
| DEW | Directed Energy Weapons |
| DEXA | Dual energy X-ray absorptiometry |