Energy transfer device portfolio pls help does anyone have the answers??

Energy transfer devices are devices that are used to transfer energy from one form to another. Examples of energy transfer devices include:

1. Generators
2. Motors
3. Transformers
4. Heat Exchangers
5. Solar Panels
6. Wind Turbines
7. Fuel Cells
8. Hydroelectric Power Plants
9. Geothermal Power Plants
10. Nuclear Power Plants