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CLP aims to power the sustainable development of communities in which we operate by providing reliable and affordable electricity to our customers with minimal impact to the environment.

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Decarbonisation and digitalisation are at the core of CLP’s business, and sustainability is fully integrated into this strategy.

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CLP continually improves by managing, monitoring and reporting its performance.

CLP Sustainability Report 2020 / Case studies

Case studies

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2019

CLP’s solar farms seek to achieve zero-water for cleaning

CLP’s solar farms require water, although in relatively small quantities, for cleaning purposes.

Manual cleaning is the most widely adopted method. However, depending on site conditions (e.g. swamp areas) this may pose safety risks to the cleaners. Cleaning during the daytime also reduces the productivity of the plant.

The Group is currently exploring innovative technology to achieve low water use targets for dust removal on solar panels. In 2019, CLP completed a pilot project to use robotic cleaning which uses brushes instead of water for cleaning of solar panels in the Sihong and Veltoor solar farms in Mainland China and India. These projects did not only achieve zero use of water for cleaning, but could also potentially increase the efficiency of electricity generation. These successes set a precedent for the wider deployment of the technology in the future.

Dry cleaning robot in Veltoor solar farm in India.

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