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Solar bottle bulb for low-income homes: A Liter of Light

The ‘bottle light’ is simple and practically cost-free: by putting water and a bit of bleach into an empty bottle that is fixed to the roof

Photo of André Fernandes
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EXPLAIN YOUR IDEA

An idea I've already posted on the renewable energy challenge (https://challenges.openideo.com/challenge/renewable-energy/research/a-liter-of-light-solar-bottle-bulb-for-low-income-homes), that's worth to this one, too. Very suitable for the realities in underserved communities and not costly to implement. Curiously, the idea started in Brazil during a blackout by the mechanician Alfredo Moser, when he improvised a lamp with a plastic bottle, bleach and water. The sunlight hits the top of the bottle and the refraction effect spreads throughout the environment. It spread around the world from the moment the philipine Illac Diaz saw on Aldredo's idea an opportunity for help low-income families in his country through My Shelter foundation.

WHO BENEFITS?

Low-income families in communities with no electricity. This idea is very practical and simple to be implemented, already working in several developing countries like Brazil, Kenya, Phillipines, India, just to mention examples.

HOW DOES YOUR IDEA TAKE INTO ACCOUNT THE CONTEXT OF URBAN SLUMS AND CLIMATE CHANGE?

We're so familiar to have energy in our daily lives that we forget its value and importance in our routine. Just to list some benefits: - possibility for children to study and do their homework on evening and at night; - small stores and kiosks can keep open at night; - provide safety in the streets, reduce the risk of crimes; - families can have social gatherings after sun goes down; - people can do income-generating activities after sun goes down. It can also be combined with other sources like sunlight.

IN-COUNTRY EXPERIENCE

  • Yes, for one year or less

EXPERTISE

  • I do not have experience working in a sector related to my idea

GEOGRAPHIC FOCUS

  • I'm not sure

TELL US A BIT ABOUT YOURSELF

Curious, traveler, willing to learn new things. Studying design thinking, tourism and travel industry. Community Prototyper for the Healthy Lives Challenge! Studying at Kaospilots Switzerland TEAM 4!

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Photo of Lillian Kivel
Team

Andre, what a great idea! The video really helped me understand the process and see the impact. What is the upkeep like? For example do they need to change the water often? Is bleach something that is easily accessible? It seems like schools could also really benefit from this technology.

Photo of André Fernandes
Team

Hi Lilian, I don't know about the technical details like how often change the water. But it's nothing complex, the materials and the installation are simple.
Just to give an example about how the A Liter of Light group started in Brazil: the guy in the video learned to install the bottle bulbs while he was in an internship in Kenya. And the girls in the same video was contacting the My Shelter Foundation to start the idea. Then, they met each other and started.

Photo of Lillian Kivel
Team

Hi,

Thanks for the additional information, sounds like a very sustainable and it is great to be able to have members of the community trained to install them. I was happy to see Liter of Light in this Medium article I was reading (https://medium.com/@THNK/silicon-valley-doesn-t-have-a-monopoly-on-innovation-b38b8fcddf7f).

Good luck!

Photo of André Fernandes
Team

Hi Lilian, thanks for the feedbacks and for this article on Medium. I'll check. Until tomorrow, I'll add some pics to make more visual how the bottle bulbs can be used. Feel free to suggest any feedback as you want.

Photo of André Fernandes
Team

I added 3 extra pics showing how the solar bottle bulbs are used.

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