Sedighizadeh - Industrial Development and Renovation Organization of Iran, Tehran, lran
Sedighizadeh - Power System Studies Group, Power Engineering Consultants Company, MOSHANIR, Tehran, lran
Shahverdi - Regional Dispatching Dept., Tehran Regional Electricity Company, Tehran, lran

This paper presents an interval-based multi-attribute decision making (MADM) approach in support of the decision process with imprecise information. The proposed decision methodology is based on the model of linear additive utility function but extends the problem formulation with the measure of composite utility variance. A sample study concerning with the evaluation of electric generation expansion strategies is provided showing how the imprecise data may affect the choice toward the best solution and how a set of alternatives, acceptable to the decision maker (DM), may be identified with certain confidence.

Decision Making, Power Generation, Electric Utilities, Resource Planning