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Planning support life cycle cost-tool for energy efficient properties


ZIT - Zenter for Innovation and Technology

Project partner:



Alpha-Carine KEG

Data supplier for the data base:

Project description:

In the early planning phase, both client and architect make decisions that essentially determine direction, energy efficiency and costs of the operation of the building. Nevertheless, the construction costs of buildings are mostly used as determinant. Operating and energy costs often play no or only a minor role. However, tenants and buyers consider these factors to be more and more important. This disposes builders and investors to consider these facts in the early planning phase.

Togehter with constructor consultant M.O.O.CON, e7 has developed a life cycle cost-tool that offers decision support for the clients, so that they can make reliable predictions about the future operating and energy costs of a building. This pushes forward the implementation of sustainable, energy-efficient building concepts.

The core of the project is an impact model, which depicts connections between fundamental features of the building and operational follow-up-costs and therefore is capable of serving as basis for the calculation of life cycle costs during the early planning phase. A virtual building model of M.O.O.CON enables a „simulation“ of the building even before the actual planing is complete. The simulated building respectively the later on available plan can be equipped with various (e.g. façades, building services systems, Floor coverings, etc.). A database including more than 1.000 of these componens provides cost-estimations for investment, maintainance, operation, cleaning as well as life spans for repair and reinstatement costs.

With the thereby linked energy-calculaltion tool of e7, the energy requirement respectively the resulting costs of the building can be determined.

Thus, different alternatives can be calculated within very short time. Hence, the builder receives reliable information about the costs of his conceptions.

Currently, the tool is being developed further and encanced within the scope of a research project for the FFG. The aim is that not only life cycle costs of the early planning phase, but also the ecological balance sheet can be calculated.

Within the scope of ZIT (2008) and the Viennese Future Price (2009), the tool was awarded a price.


Gerhard Hofer

T: +43 1 907 80 26 - 55



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