| Subject | English | Croatian |
| energ.ind. | Action Plan for Energy Efficiency | Akcijski plan energetske učinkovitosti |
| environ. | economical-ecological efficiency | ekonomsko-ekološka učinkovitost (Sposobnost za poslovno djelovanje koje uključuje odnos između financijskih i ekoloških načela) |
| comp., MS | efficiency bonus | bonus za učinak (In computer games, an additional score or points given for efficient play) |
| environ. | efficiency criterion | kriterij učinkovitosti |
| environ. | efficiency level | stupanj učinkovitosti |
| environ. | efficiency level The ratio of output to input, usually given as a percentage | razina učinkovitosti |
| environ. | energy efficiency | energetska učinkovitost |
| econ. | energy efficiency | energetska učinkovitost |
| environ., energ.ind., el. | energy efficiency class | razred energetske učinkovitosti |
| transp., nautic., environ. | Energy Efficiency Operational Index | Operacijski indeks energetske učinkovitosti |
| environ. | improvement of efficiency | poboljšanje učinkovitosti |
| comp., MS | Power Efficiency Diagnostic | Dijagnosticiranje energetske učinkovitosti (A Wizard-based interface for maximizing battery life based on user preferences) |
| environ. | resource efficiency | učinkovitost resursa |
| transp., nautic., environ. | Ship Energy Efficiency Management Plan | Plan za upravljanje energetskom učinkovitošću broda |