15-Year-Old Filipino Student Creates Insole That Generates Energy With Every Step and Can Charge a Mobile Phone Battery After Two Hours of Activity

Written by Jefferson Augusto

Published on 03/03/2026 at 14:19

Angelo Casimiro desenvolveu palmilha que transforma passos em eletricidade.

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Young Inventor Presents Project at Google Science Fair 2014 and Develops Technology with Piezoelectric Discs Capable of Converting Step Pressure into Stored Electricity via USB

The search for alternative renewable energy sources has gained an unexpected— and extremely creative. A 15-year-old Filipino student developed a sneaker insole capable of generating and storing electrical energy while a person walks or runs. The innovation, besides being simple, could represent a significant advance in portable clean energy generation.

The information was disclosed by “FashionNetwork.com BR,” with data from UseFashion, highlighting the young inventor’s participation in the Google Science Fair 2014.

The student, identified as Angelo Casimiro, presented the project as an electric power generator adapted within the footwear. In other words, the body’s movement itself transforms into a source of electricity.

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How the Insole That Converts Steps into Electric Energy Works

First, the system works through the pressure exerted during steps. Whenever a person walks or runs, the insole activates two piezoelectric discs — crystals that, when subjected to mechanical pressure, generate an electric field.

Therefore, each foot movement directly contributes to the generation of electric energy. Moreover, this energy is not lost. On the contrary, it is stored in a battery integrated into the system.

The insole has:

Two piezoelectric discs
Energy storage system
USB output compatible with various devices

Thus, the user can connect devices like mobile phones, flashlights, and radios directly to the battery installed in the footwear.

According to Angelo Casimiro, after an athlete plays basketball for almost two hours, the energy accumulated in the insole is sufficient to charge ten minutes of a mobile phone battery. Although the charging time is still partial, the concept demonstrates the potential of the technology.

Portable Clean Energy and Accessible Innovation

The main objective of the project is to seek efficient resources for energy generation that allow for a full battery charge in less time. In other words, Angelo is not just looking to generate electricity — he wants to optimize the process.

Furthermore, the proposal aligns with a global trend towards sustainable energy development and portable technologies. While large companies invest billions in renewable sources, a 15-year-old student demonstrated that innovation can also arise from simple and intelligent solutions.

Consequently, the energy-generating insole stands out for three main factors:

Sustainability
Portability
Low structural cost

Although the project is still in the experimental phase, it highlights how piezoelectric energy can be applied in everyday life.

Youth, Creativity, and the Future of Renewable Energy

Angelo Casimiro’s participation in the Google Science Fair 2014 reinforces the importance of encouraging youth scientific talents. After all, when teenagers apply critical thinking and creativity to real problems, solutions arise that can transform entire sectors.

Moreover, the project demonstrates that electric energy generation does not necessarily need to rely on large power plants or complex structures. On the contrary, the simple act of walking can become part of a personal energy matrix.

Therefore, by transforming steps into electricity, Angelo presented not only a functional prototype but also an innovative vision of mobility and sustainability.

And you, did you imagine that each step could help charge your phone?

13-Year-Old Scientist Creates Clean Energy Device for Just R$ 16, Wins US$ 25 Thousand Prize, and Surprises the World with Affordable Solution

Source: FashionNetwork.com BR

15-Year-Old Filipino Student Creates Insole That Generates Energy With Every Step and Can Charge a Mobile Phone Battery After Two Hours of Activity

Young Inventor Presents Project at Google Science Fair 2014 and Develops Technology with Piezoelectric Discs Capable of Converting Step Pressure into Stored Electricity via USB

How the Insole That Converts Steps into Electric Energy Works

Portable Clean Energy and Accessible Innovation

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15-Year-Old Filipino Student Creates Insole That Generates Energy With Every Step and Can Charge a Mobile Phone Battery After Two Hours of Activity

Young Inventor Presents Project at Google Science Fair 2014 and Develops Technology with Piezoelectric Discs Capable of Converting Step Pressure into Stored Electricity via USB

How the Insole That Converts Steps into Electric Energy Works

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In Niger, mud buildings have stood for ten generations while the world spends billions on concrete and steel, now African architects are proving at the Venice Biennale and in real projects that red earth can be the smartest and most sustainable building material of the 21st century.

Seven world powers including the US, China, and Russia are spending €22 billion on a reactor in the south of France that aims to confine plasma at 150 million degrees Celsius, ten times the temperature of the Sun’s core, using a magnetic field capable of lifting an entire aircraft carrier.

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With a wingspan of 152 meters, 76 tires, and a capacity to carry 1,270 tons, the Boeing Pelican was the giant “flying ship” that promised to cross oceans close to the water on an invisible air cushion beneath its wings.

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