Óbuda (Budapest)

The capital of Budapest is divided into 22 districts. One of the biggest local governments is the district, called Óbuda – Békásmegyer. It has 127.000 inhabitants and is the 6th biggest municipality of Hungary. The City Council of Óbuda approved a development plan of the district in which one of the main duties is the energy efficiency reconstruction of the blockhouses. In total there are 33.981 flats built with an industrial prefabricated concrete system. This prefabricated construction has a very bad condition concerning the windows, walls and roof insulation and the efficiency of the central heating system. Energy and cost saving are of a great importance for the people who live in these blockhouses.

Energy efficiency in buildings (RUE)
The proposed renovation project, named Óbuda ‘Forte’ contains  a complete insulation package for five buildings (900 flats); isolation for the roof and the entire façade, window changing and the renovation of the heat system infrastructure. The insulation will be better than the national requirements for new buildings.

Sustainable Energy Supply (SES)
The domestic hot water system will be separated from the district heating system. On the roof of the buildings solar energy systems will be installed (1.500 m2). These thermal collectors will supply the domestic hot water for the flats in days when the solar energy is enough and together with gas- fired boilers when the renewable energy is not sufficient. Disconnecting the hot water system from the district network will improve the overall efficiency of the network considerably (as the central boilers of the network will not need to provide hot water in periods with a low heat demand - in summertime).

Integration of SES and RUE
Energy efficiency measures have an enormous impact of 70% reduction compared to these currently not insulated buildings. These measures -that normally are not taken- have to be the start of a sustainable approach. With respect to the integration of sustainable energy, this project demonstrates the options to introduce sustainable solar energy in district heating system. The district heating system, with inefficient boilers, does not have to operate during summer.

Specific Innovations
The collective approach with participation from the municipalities, together with the private housing owners, is unique in this project. They will work together to make use of the large energy saving potential in these areas and to make a start with the introduction of sustainable energy in the supply system.

More information on the Hungarian project: www.faluhaz.eu

Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme