clean energy: meaning, definition, pronunciation and examples

It is debated. Proponents argue it is low-carbon and thus 'clean' in terms of emissions. Opponents or cautious definitions often exclude it due to radioactive waste and safety concerns, preferring terms like 'low-carbon' or 'zero-emission' for nuclear.

'Renewable energy' specifically comes from naturally replenishing sources (sun, wind, water, geothermal heat). 'Clean energy' is broader, focusing on low/no pollution; it can include renewables and *sometimes* nuclear or fossil fuels with effective carbon capture and storage (CCS), though this is contentious.

Not directly. Energy efficiency is about using less energy to perform the same task. While vital for sustainability, it is separate from the *source* of the energy. However, they are often discussed together under terms like 'clean energy solutions'.

In most everyday contexts, yes, they are used interchangeably. However, 'green' can have a stronger connotation of general environmental friendliness beyond just emissions (e.g., considering land use, wildlife impact), while 'clean' focuses more specifically on the absence of pollutants and greenhouse gases.

Energy derived from sources that produce little to no greenhouse gas emissions or other pollutants during generation, such as solar, wind, hydro, and geothermal.

Clean energy is usually formal/technical, but widely used in general media and policy discourse. in register.

Clean energy: in British English it is pronounced /ˌkliːn ˈen.ə.dʒi/, and in American English it is pronounced /ˌkliːn ˈen.ɚ.dʒi/. Tap the audio buttons above to hear it.