Case Stories
The main objective of Subtask A is to provide the knowledge needed for the development of guidelines, methods and tools which will be developed in Subtask B and C. 21 buildings designed using the 'whole building approach' were studied and documented. Both the particular processes used in the design of the buildings and the resulting building performances will be evaluated. The case story buildings are good examples of integrated design and show several sustainable technologies. The results of the evaluation of these buildings are documented in the report 'Description of Case Stories'.

Design Process Guidlines
The integrated design approach is especially important in the early stages of the design process. Therefore the principal task of Subtask B is to develop design process guidelines suitable for the early phases of design.
The guidelines will both deal with the make up of and the interaction between members of the design team, with the information required by the team and with the challenge of designing a building as a system where the several low energy and solar technologies to be used are integral parts of the whole.

Methods and Tools for trade-off analysis
The main objective of Subtask C is to develop methods and tools to be used by the designers when doing trade-off analysis between different low energy and solar technologies. As designers, builders and owners optimize against a large number of criteria, such as energy use, comfort, cost, aesthetics, environmental impact, etc., it is assumed that there is a need for both a computer based tool that can optimize against a relatively limited set of criteria and a more complex, multi criteria decision making tool that will enable the designers to more general but therefore less detailed optimizations.

Dissemination and Demonstration
The objective of Subtask D is to disseminate the results of the work of the Task 23 to the building community. For architects and engineers designing low energy and solar buildings it is assumed that dissemination through workshops, seminars and design competitions will be particularly effective. For builders, owners and occupants it is assumed that demonstration buildings and the documentation of these will be most effective.