| Subject | English | Estonian |
| environ. | solar cell A device for converting sunlight into electrical power using a semiconductor sensitive to the photovoltaic effect. Solar cells are used on space satellites to power electronic equipment, and as their price falls they may come to be used to provide energy on the Earth | heliorakk |
| energ.ind. | solar cell | päikeseelement |
| earth.sc., energ.ind., el. | solar cell array | fotoelektriline sektsioon |