Discover EFdeN VATRA, the solar house prototype representing Romania
in the Solar Decathlon 21/22 in Wuppertal


EFdeN goes to Wuppertal!

EFdeN goes to Wuppertal!

SDE goes urban!


Our vision is to create a sustainable and affordable housing model that empowers single-living people by forming a community. The intervention aims to be easily constructed and adaptable to different urban scenarios and multiple usage cycles, featuring a close connection between humans and nature.

Feasibility. Economic accessibility

Site optimization by prefabrication, energy efficiency through passive design and optimal compartmentalization of living space – all for a convenient price / quality ratio for the target audience.

Maximum efficiency. Scalability

3 housing unit modules and one greenhouse module can be arranged and prefabricated to suit any context.

Context Integration

Sustainable materials chosen according to the cultural context of each site.


Buildings are responsible for 40% of Europe’s energy consumption. Our target: ensuring the optimal conditions of comfort in our prototype during the competition exclusively through passive strategies.


We design a house to the strictest certification standard for sustainable homes in the world. LBC does not propose buildings with as little negative impact as possible, but buildings with as much positive impact as possible on the environment.

Project development & Current state

Get in Touch

Dalia Stoian

Project Manager

Politehnica University of Bucharest

Andreea Iacob

Project Architect

Ion Mincu University of Bucharest

Sergiu Baroiu

Project Engineer

Politehnica University of Bucharest

Ioel Giger

Project Engineer

Technical University of Civil Engineering of Bucharest


Este noul prototip de casă sustenabilă cu care echipa EFdeN s-a calificat pentru a 3-a oară la competiția Solar Decathlon Europe, care se va desfășura anul viitor în Wuppertal, Germania.

Aceasta este prima ediție axată pe regenerarea fondului urban.

The Organizers