# cleantech

CEFR B2 · Noun

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

## Definition

technology that helps protect the environment by using clean energy or reducing waste. It includes things like solar panels, wind power, and electric cars.

For teachers: technological products or services that improve operational performance while reducing costs, inputs, energy consumption, waste, or environmental pollution. Often used as a collective term for the renewable energy and sustainability sector.

## Examples

- The city is investing in cleantech to reduce pollution.
- Many venture capital firms are shifting their focus toward cleantech startups that specialize in carbon capture and battery storage.
- The rapid advancement of cleantech has transformed the energy landscape, making renewable sources like wind and solar more cost-effective than traditional fossil fuels in many global markets.

## Usage notes

- Often functions as a modifier in compound nouns like 'cleantech sector' or 'cleantech industry'.

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