OttoWagner-ArealPlus - Feasibility study for a certified plus-energy-district-renovation of the listed Otto-Wagner-Area

Development of an innovative concept for the transformation of the Viennese Otto-Wagner-Area into a plus-energy-quartier while meeting requirements of cultural heritage management. The historic architectural jewel covers an area of ​​around 50 hectares, consists of 70 buildings and a gross floor area of ​​around 200,000 m². The solution meets highest energy efficiency standards and comfort requirements.

Short Description



Starting point / motivation

The building sector is one of the global key drivers for halting climate change. Despite the necessary solutions to achieve climate neutrality in the energy supply of buildings exist and despite the urgency to prevent greenhouse gas emissions by 2050 at the latest, progress is slow. The Viennese cityscape is characterized by its historic architecture, so that its preservation stands in contradiction to the energy turnaround for some.

The Otto-Wagner-Area represents a particularly essential cultural ensemble, which is unique in its entirety. Many of the numerous pavilions require a thorough renovation to enable sustainable use. The motivation of the research project is the development of a holistic rehabilitation concept. This is to demonstrate that, even while preserving listed buildings and maintaining the highest level of comfort, greenhouse gas emissions in the building sector can be minimized cost-effectively to zero.

Contents and goals

The Otto-Wagner-Area is the world's largest contiguous Art Nouveau ensemble. With the planned establishment of the Central European University (CEU) on a part of the entire site, there is a unique opportunity to preserve this cultural heritage in its entirety, to rise its standard to the level of the 21st century and to increase its comfort and value.

The aim of the research project is to develop a decision support for the 50 hectare area to be developed with 70 buildings with a total GFA of more than 200,000 m², in order to be able to renew this listed ensemble into a plus-energy district in a trend-setting manner.

The aim is an economic presentation of the complex district rehabilitation with a wealth of measures from best energy efficiency compared with coordinated extraction and storage of renewable energy at the site to meet the energy needs.


The basis is a profound energy-technical analysis of the existing situation of the Otto-Wagner-Area including assessment of the current energy standard for the different consumption sectors. Based on this, the energy efficiency potential of the area is determined and the resulting energy and greenhouse gas savings are quantified.

As a result, measures are being developed in order to realize the technically possible energy savings in an optimized way and, on the other hand, to cover the remaining energy demand with renewable energy sources provided at the site.

Expected results

The current energy consumption of the Otto-Wagner-Area in its current state is quantified. In addition, a catalog of measures will be developed to achieve the minimization of the required energy consumption at the site.

These measures are developed according to the various boundary conditions such as conservation of historical architectural structure, energy efficiency, high comfort requirements or environmental sustainability, in order to ensure an actual implementation of the concept.

Project Partners

Project management

Schöberl & Pöll GmbH

Project or cooperation partners

  • Central European University (CEU)
  • TU Wien – Institut für Architektur und Entwerfen
  • LANG consulting
  • OeAD-WohnraumverwaltungsGmbH

Contact Address

DI Klemens Schlögl
Schöberl & Pöll GmbH
Lassallestraße 2/6-8
A-1020 Vienna
Tel.: +43 (1) 726 45 66/14
Fax: +43 (1) 726 45 66/18