A young Australian invents a device that produces energy and clean water with the sun

Google has announced the finalists for its annual science fair and the projects are impressive. But among them, more precisely 15 inventions designed to make the world a better place, the Cynthia Sin Nga Lam This is without a doubt the most remarkable. The H2Pro, as its inventor called it, purifies wastewater and at the same time produces hydrogen which allows electricity to be produced using only sunlight.


Google Science Fair is an online science and technology competition in which students from all over the world, individually and in teams, ages 13-18 can participate. Find out what prizes you can win and learn more about who is entering the contest.

Concerned about the millions of people who live around the world without electricity and water, the 17-year-old student from Balwyn High School in Melbourne, Australia, designed a photocatalytic unit for power generation and portable water purification that produces both clean energy and fresh water at the same time.

With this project, Cynthia aims to tackle two issues together: how to provide clean water and electricity to all the people in the world who lack it. Currently, 780 million people lack clean water, while 1.2 billion live without electricity. The H2Pro could change this by photocatalytic technology, which purifies water and at the same time produces electricity using only sunlight.

In her application, Cynthia explains that while researching photocatalysis, she came across the idea of ​​H2Pro.

“In photocatalysis, not only is water purified and sterilized, but hydrogen is also produced by splitting water, which can be used to generate electricity.”

While there are other designs that have proposed a similar method, they often require external power, meaning they cannot be used in remote locations. Cynthia aims to change this through photocatalysis, which can be applied on a manageable scale to enable water purification and economically acceptable power generation. An economically viable and ecological system.

Cynthia herself explains her project to us:


By uploading the video, you agree to YouTube’s privacy policy.
More information

Download a video

If you want to know more about his project, here is a link with more information: googlesciencefair.com/projects/