Spanish girl creates solar thermal backpack to help homeless
In times when sustainability and solidarity seem separate paths, a young Spanish girl has managed to unite them in a brilliant solution. At just 12 years old, she developed a solar thermal backpack capable of providing prolonged warmth to homeless people during cold nights. This invention, combining clean technology and strong social commitment, is drawing attention from organizations, institutions, and the media for its enormous potential.
What is the solar thermal backpack?
The backpack designed by the girl—whose name has not been publicly disclosed to protect her privacy—incorporates flexible solar panels that capture solar energy during the day. This energy is stored in an integrated battery and used to heat a series of thermal elements inside the backpack, which can be unfolded into a heated blanket.
In addition to its thermal function, the backpack is designed to be practical, lightweight, and water-resistant. It includes waterproof compartments, a pocket for food or medication, and a simple system to turn it into a padded sleeping surface.
An invention born from empathy
The idea emerged from the girl’s personal experience, seeing homeless people sleeping on the streets during a cold wave in Madrid. Driven by empathy and her interest in science, she began researching accessible, sustainable, and viable solutions to address this reality.
Inspired by solar technology and low-consumption heating systems, she designed her first prototype using recycled materials and reusable components. She presented the project at a school science fair, where she was awarded. Later, the invention caught the attention of organizations supporting homeless people and was improved with technical support from volunteer engineers.
Sustainable technology serving the most vulnerable
The most innovative element of the design is the use of solar energy as a portable heating source. This approach not only eliminates reliance on fossil fuels or electricity but also makes the system self-sufficient.
Key components include:
- Flexible and lightweight solar panels, efficient in urban environments.
- Rechargeable battery, capable of powering the thermal system for several hours.
- Low-voltage heating pads.
- Waterproof and thermal outer material that retains heat and protects against wind.
Additionally, the system is low-cost, with a manufacturing estimate below 50 euros per unit. This opens the door to mass production through donations or social programs.
Social impact: more than just warmth
This backpack is not only a solution to cold but also a tool of dignity. According to Fundación RAIS, more than 28,500 people live on the streets in Spain, many suffering illnesses related to cold and constant exposure to extreme weather conditions.
Providing a portable thermal protection device can reduce hospitalizations, improve mental health, and facilitate social inclusion by offering a minimum level of comfort and protection.
Community response and next steps
Several NGOs, such as Cáritas and Doctors of the World, have shown interest in collaborating to evaluate the feasibility of distributing the solar thermal backpacks in their aid programs. Some universities have also offered laboratories to improve device efficiency and study durability.
The Madrid city council, after learning about the invention, is considering including it in its winter plan for homeless people, in collaboration with social tech companies.
The young inventor has expressed her desire to release the plans and design under a free license, so any organization worldwide can reproduce the invention at no cost.
An example of eco-social innovation
This case is a powerful reminder that sustainability is not only a technological issue but also a way to care for the most vulnerable people. The solar thermal backpack provides not only warmth but also hope.
It is also an inspiration for those who believe that age or limited resources are obstacles to making an impact. Creativity, empathy, and knowledge can bring real change, even from a primary school classroom.
What can we learn from this initiative?
- That solar energy has enormous potential beyond rooftops and large installations.
- That sustainability and social justice can go hand in hand.
- That young people have fresh ideas that can change the world… if given space and resources.
If you manage an NGO, collaborate on solidarity initiatives, or want to get involved, consider sharing this story or supporting similar projects. You can also explore how clean technology can be a tool for social change, even from your own home.
