mentation of the desalination plant and the purified recycled water plant provided climate resilient options for water
supply although at a much higher cost to consumers. Given that SEQ can transition from drought to flood and vice
versa in a short period of time it is a fine balance to operate the new more complicated asset base economically whilst
maintaining sufficient supply security. With rising energy prices and the increasing cost of living pressures, there is
an immediate need to better understand what optimal grid operation looks like. To get this broader understanding
a Decision Support System (DSS) using optimization was developed to help better understand optimal operational
modes of the integrated SEQ water grid.
This paper discusses the application of optimization techniques and the basis of the DSS which was developed for
use by the operators and managers of the SEQ water grid