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The 5th Building Knowledge Hub opens doors in Bulgaria

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Branch organizations, vocational training centres and material and component manufacturers are invited to use for free the newly established lab and its equipment for training courses on energy efficiency in buildings


Airtightness and infrared thermography; mechanical ventilation with heat recovery (MVHR); design and construction skills for delivering quality nearly Zero-Energy Buildings (nZEBs) – these are just few of the topics that are covered in the courses in the newly established Building Knowledge Hub (BKH) – Bulgaria, dedicated to energy efficiency and RES in buildings. The opening ceremony was held in the University of Architecture, Civil Engineering and Geodesy (UACEG) in Sofia – the host of the Hub - on 16th May, welcoming more than 80 guests, including representatives of the national government, the construction and educational sectors. The first courses, already running and opened for registration, can be found on, as many of the trainings are still either free of charge or with an insignificant participation fee.


The BKH is established and equipped as part of the Train-to-NZEB ( project that has received financing under the Horizon 2020 programme of the EU. The training centre is a part of an already established and quickly developing international network of BKHs (in Bulgaria, Czech Republic, Romania, Turkey and Ukraine) that aims to create favourable conditions for specialised practical training of building professionals from all fields – researchers, designers, investors, construction managers and contractors, as well as central and local authorities’ representatives and journalists.


Apart from the host UACEG and the initiators of the project EnEffect and BCC, during the opening ceremony official addresses were delivered by representatives from the Natonal Sustainable Energy Development Agency (SEDA), Chamber of Engineers in the Investment Design (CEID) and Bulgarian Association for Insulation in the Construction (BAIC). The attendance of representatives of numerous construction companies and building materials and components suppliers was deciphered as a positive and encouraging sign; a number of vocational training centres also expressed the willingness to collaborate and organise joint trainings. However, despite the common understanding that there is a critical need to actively upskill the construction specialists in topics related to the energy efficiency and RES in buildings, the realisation of these goals is still considered extremely challenging and visibly, there is an acute need to streamline the efforts of all stakeholders to raise the interest and increase the market value of such training courses.


The new BKH facilities incorporate and demonstrate the full range of modern technologies, products and materials necessary for constructing NZEBs which is still relatively unknown by the building professionals. Multiple training programmes are offered – from BUILD UP Skills courses, through the internationally recognized Certified Passive House Tradesperson and Designer courses, courses for acquiring professional qualification under the national regulations, and short demonstrational courses for investors and decision-makers. Virtually all topics connected to the nZEB are covered, including insulation and airtightness, window and facade systems, ventilation with heat recovery, contemporary heating and cooling systems, RES, renovation of existing buildings and many more.


Thanks to the international partnerships and the recently awarded new EU projects, it is expected that the BKH will become a knowledge and skills exchange centre for modern design, construction and exploitation of energy efficient buildings that comply to the standards of the coming decades. The courses already open for registration are one-click away and easily accessible at

Further information about the EU programmes that facilitate the project is accessible on and


The Train-to-NZEB project, supported by the Horizon 2020 programme of the EU, is implemented by an international consortium of 12 organizations from 7 European countries (Bulgaria, Czech Republic, Germany, Ireland, Romania, Turkey and Ukraine) under the overall coordination of the Centre for Energy Efficiency EnEffect (Bulgaria).