WaterLight: Lighting Up Lives with Salt Water – The New Face of Renewable Energy

Clean Energy Revolution: WaterLight

WaterLight: Lighting Up Lives with Salt Water – The New Face of Renewable Energy

According to the World Health Organization, at least 840 million people around the world are without access to electricity, hindering their ability to work beyond daylight hours, carry out essential tasks, and stay connected to the broader world. With electricity demand expected to increase by 70% by 2035, and traditional fossil fuels estimated to be depleted in the next 52 years, a solution is urgently needed.

For many off-grid communities, where the sun hides more often than not, there’s a new superhero in town: WaterLight. Born from the labs of the Colombian start-up E-Dina, it promises to turn tales of darkness into stories lit by the shimmer of salt water.

How Does This Work?

WaterLight: Lighting Up Lives with Salt Water - The New Face of Renewable Energy

Imagine having a flashlight that doesn’t require batteries and can last for 45 days on just half a liter of salt water. There is no need for the sun or charging. It works whether it’s day or night, rain or shine. The icing on the cake is that this tiny device can also recharge your phone. Living without a grid? No more disconnected periods!

Our large, blue planet is almost entirely covered by water. Most of it is too salty to consume. However, with WaterLight, we’re giving this saltwater an entirely new role as a source of energy! We might have been ignoring the potential of our enormous oceans all along in a world that is continuously hunting for new energy sources.

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If you go into the science, you’ll discover that it makes use of a concept called “reverse electron flow.” To put it another way, it cleverly converts the materials inside (thanks to our salt water) into a never-ending source of energy. This magic lamp won’t let you down, not even on those dreary, overcast days.

A fancy torch isn’t all that WaterLight is. It serves as a ray of hope in areas with a lack of power. Fighting back against fossil fuel pollution is a green fight. Moreover, it acts as a silent messenger, ensuring that even the most remote locations have access to power and the internet.

Growth and Inspiration

WaterLight: Lighting Up Lives with Salt Water - The New Face of Renewable Energy

Life quality and economic opportunity are made possible by electricity. Activities that are hindered are fishing in the darkness, homework that children are meant to complete using candles, which also increases the risk of fire, and mobile phones that cannot be charged.

We bonded with the ancient Wayu customs, an indigenous people group residing on the remote La Guajira peninsula that lies on the border between Colombia and Venezuela. A global deployment of WaterLight will show how innovation, technology, and humanity can result in a game-changing concept and significantly improve the lives of millions of people.

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WaterLight is a forward-thinking, affordable solution for many developing nations, including Sierra Leone, Nigeria, Gabon, Somalia, and Syria, that lack access to energy but benefit from a coastline, as well as for governments, NGOs, and private organizations looking for sustainable technology solutions for coastal communities.

This device can be a significant aid for organizations providing refugees with necessities, especially in areas where resources are short, as the worldwide refugee crisis is expected to intensify.


WaterLight is more than just a gadget. It’s an invented fairy tale in which ordinary saltwater emerges as the hero. Sometimes the most unexpected answers to our quest for a happier, greener, and more interconnected world are just under our noses (or under our feet).

WaterLight: Lighting Up Lives with Salt Water - The New Face of Renewable Energy

In the future decade, renewable energy will continue to grow, surpassing fossil fuels and lowering greenhouse gas emissions.

The light can last for around two to three years before it needs to be recycled. These lights have been made available by E-Dina to residents of the coastal desert on South America’s northernmost peninsula, the Guajira Peninsula. The area is impoverished, and there is little to no access to electricity.

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Even though each light costs between $60 and $100 to produce (compared to solar power’s much lower cost), the technology is more dependable and can instantaneously charge the lights, which solar energy cannot.

Through charitable and governmental groups, E-Dina intends to distribute these lights to other underdeveloped coastal areas across the world.

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