Decision making on capacity addition has become highly complex as the
power industry worldwide is undergoing regulatory changes. This paper
argues the use of mathematical models to aid the decision makers to se
lect generation capacity bids. A three-stage optimization scheme is de
veloped to accurately estimate the benefits from a specific project. M
ultiobjective framework to capture both quantitative as well as qualit
ative information (through expert judgement) has been employed. The mo
del can be used to estimate the marginal benefit from a project and ca
lculate a composite index to rank them in order of their desirability.
A case study for modified IEEE 30-bus test system illustrates the met
hodological issues.