DOI: 10.5593/SGEM2014/B41/S17.024


J. Legeny, P. Morgenstein,
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-15-5 / ISSN 1314-2704, June 19-25, 2014, Book 4, Vol. 1, 181-188 pp

The importance of energy efficient and ecologically aware city design becomes obvious if the trend of rising citizens is observed. According to statistics, in 2050 about 70% of world’s population will concentrate in cities, thus multiplying their social and environmental problems. But city represents not only a problem, it also can be the solution. To cope effectively with ambitious goals set by the EU-strategy Europe 2020 the growing energy demand needs to be addressed at urban scale and new local renewable sources need to be introduced, respecting cultural values and identity of contemporary cities. The city fabric needs to be looked at both as energy resource and energy consumer. From such viewpoint many questions emerge – addressing legislative, cultural, historic, technical, methodological issues related to urban planning. This paper examines electric energy demands in Ostredky, a city quarter of Bratislava, Slovakia built in 1960’s. Based on proposed strategies of sustainable urban planning defined by authors (Energy Effective Urban Structures Generating and Energy Cooperativeness of Urban Structures) the study investigates solar potential and energy cooperation possibilities of the settlement. Resulting from the analyses, measures to optimisation of urban density, smart usage of local renewable energy sources and increase of energy efficiency are proposed, leading to a nearly-zero-energy neighbourhood. New energy-related urban indicators (solar index and energy cooperation indicator) are introduced and verified on the example of Ostredky. To enable future urban concepts based on synergic utilisation of energy from renewables the implementation of these indicators into urban development regulation is of great importance and has to be supported by law. It is no doubt that the significance of dealing with energy efficiency and sustainability at urban scale rises. However, some pitfalls may occur, because according to Marcel Roncayolo: “Urbanism rarely escapes from the temptation and the need for authoritarianism”.[1] And for that matter, authoritarianism could not be sustainable by its very nature.

Keywords: Solar Urban Planning, Sustainable Urbanism, Solar Index, Cooperation Indicator, Renewable Energy Sources Potential