| Part of speech | unknown part of speech |
|---|
| Singular | Plural | |
|---|---|---|
| Nominative | hidroelektra | hidroelektraj |
| Accusative | hidroelektran | hidroelektrajn |
| Afrikaans | hidroëlektries |
|---|---|
| Dutch | hydroëlektrisch; waterkracht‐ |
| English | hydroelectric |
| French | hydro‐électrique |
| German | hydroelektrisch; Wasserkraft‐ |
| Greek | υδροπλεκτρικός |
| Spanish | hidroeléctrico |