# clean technology

CEFR B2 · Compound

Source: https://englishreference.com/word/clean-technology
Updated: 2026-07-22

## Definition

machines, systems, or ways of working that do not harm the environment. You use this to talk about things like solar power or electric cars that help stop pollution.

For teachers: processes, products, or services that reduce negative environmental impacts through significant energy efficiency improvements, the sustainable use of resources, or environmental protection activities.

## Examples

- The government is investing more money in clean technology.
- By switching to clean technology, the factory was able to reduce its carbon emissions while lowering its monthly energy costs.
- The rapid advancement of clean technology has transformed the energy sector, making renewable sources like wind and solar increasingly competitive with traditional fossil fuels in the global market.

## Usage notes

- Often used as a collective term for the industry; can be shortened to 'cleantech' in business contexts.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.