EFdeN is a Romanian educational NGO that is dedicated to promoting sustainability among students, young professionals, and the general public. With a focus on urban regeneration, energy-efficient practices, and green architecture, EFdeN works towards creating a more sustainable future. One of their notable achievements is the EFdeN Sustainable City in Bucharest, which serves as an ongoing prototype showcasing their previous projects for Solar Decathlon Competitions.

This prototype also serves as the first sustainable city prototype in Romania. EFdeN operates closely with educational institutions, offering students practical experience through volunteering and learning opportunities from experienced professionals. They believe in sustainable communities where individuals can lead high-quality lives and are committed to designing and implementing models of good practice that are connected with nature.

Since their establishment in 2013, EFdeN has implemented over 10 projects with the help of 600+ volunteers, received 50+ awards, and involved 300+ partner companies. With a unique story that began as a single project, EFdeN has grown to become the leading sustainability NGO in Romania