| Abbreviation | Definition |
|---|---|
| EP | Electrical Power |
| EP | Equivalent Person |
| E-P | Electron/Proton |
| EPA | Energetic Particle Analyzer |
| EPAR | External tank Project Assessment Review |
| EPC | Error Protection Code |
| EPC | External Power Contractor |
| EPCDC | Electrical Power Conditioning, Distribution, and Control |
| EPD | Electrical Power Distribution |
| EPD | Emergency Procedures Document |
| EPDB | Electrical Power Data Box |
| EPDB | Electrical Power Distribution Box |
| EPDB | Experiment Power Distribution Box |
| EPDC | Electrical Power Distribution and Control |
| EPDCS | Electrical Power Distribution and Control System (Subsystem) |
| EPDM | Ethylene Propylene Diene Monomer |
| EPDS | Electrical Power and Distribution Subsystem |
| EPDS | Electrical Power Distribution Subsystem |
| EPDS | Electrical Power Distribution System |
| EPDS | Experiment Power and Data System |