Starting potato, mango, star fruit, tamarind, finally an Indonesian student named Naufal Raziq can perfect its findings on kedondong fence. Teens from Langsa, Aceh, it managed to change the acid content in the tree into electrical energy. Innovation that began when he was sitting in elementary school in 2004 then. A Natural Science (IPA) subject task leads him to experiment to produce electrical energy in a simple way, namely changing the acid content of the potato.
Teenagers who are now 16-year-old realized that the higher the acid content contained in the power source, the stronger the voltage generated. Trial after trial continued until he found the most appropriate media, namely pinatta spodias aka tree kedondong fence. By utilizing four trees kedondong, Naufal gets electrical energy that can light a lamp.
The findings that have been patented in 2017 and then attract the Government interest. In collaboration with PT Pertamina EP, now Nondefal's electricity has been able to illuminate 20 houses in his hometown, in Tampur Paloh Village, East Aceh, which is not yet fully electricity.