| Complex system (57) |  |
| Critical system (12) | |
| Environmental system (7) | |
| National system (16) | |
| New system (5) | |
| Socioeconomic system (10) | |
| System (1351) | |
| System alternatives (9) | |
| System configuration (6) | |
| System innovation (7) | |
| Systems thinking (16) | |
| Complex system (57) | |
| Critical system (12) | |
| Environmental system (7) | |
| National system (16) | |
| New system (5) | |
| Socioeconomic system (10) | |
| System (1351) | |
| System alternatives (9) | |
| System configuration (6) | |
| System innovation (7) | |
| Systems thinking (16) | |
the range of possible technological system alternatives has been substantially expanding. Due to ICT, miniaturization of components, new technological solutions like membrane technology or new measuring and control devices, radically different system configurations might become available with grossly enhanced performance characteristics.
potentially reversing the originally developed preference rankings for system alternatives. Furthermore, as infrastructures represent the backbones of industrialized societies,
When evaluating system alternatives a wide set of potential impacts has to be considered in order to define a socially optimal outcome.
Given that conventional planning approaches are optimized for blinding out uncertainties in contexts, system alternatives and value considerations,
1) opening critical context developments,(2) broadening the range of analyzed system alternatives,(3) using sustainability criteria
In particular, we expect that this approach enables decision makers to systematically ponder a broader spectrum of system alternatives (especially those including development options outside the dominant socio-technical regime),
and system alternatives for an infrastructure system in the time horizon of 25 years which is congruent with the expected average lifetime of central infrastructure components.
Thirdly, the set of potential system alternatives is explored systematically. Options are regarded as combinations of technical and organizational system characteristics that cover the entire process chain of the infrastructure service 64.
Based on this argumentative material, the core team may narrow down the options to one or two system alternatives that show a high sustainability potential.
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