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<br />tool such as the MULTISYM produc- <br />tion cost model is essential to accu- <br />rately model the interaction of potential <br />long-tenn replacement power re- <br />sources with the interconnected <br />system, <br /> <br /> <br />Although specific transmission im- <br />provements were not explicitly modeled <br />as part of the proof-of-concept analy- <br />sis, the analysis results do illustrate how <br />the location of the replacement re- <br />source will affect the flow of power on <br />Western's system. While MULTISYM <br />can model contractual transmission <br />path constraints and identifY their affect <br />on economic dispatch and reliability, <br />traditional power-flow analysis will be <br />necessary to study transmission effects <br />in detail. <br /> <br /> <br />. Appropriate sources for interconnected <br />system load and resource data were <br />identified and tested, and will be appro- <br />priate for Western to use in maintaining <br />a current database to use in evaluating <br />replacement resource~. <br /> <br />Data gathering and implementation <br />resulted in a useable database for <br />Western as a starting point for actual <br />evaluations. The models developed <br />during the proof-of-concept analysis <br />were in a relatively advanced stage of <br />implementation as work was completed <br />on this study, reducing the amount of <br />additional work for Western prior to <br />perfonning actual replacement resource <br />evaluations. <br /> <br />m <br />