text_combined: henwood query hi karolina yes might productive talk phone given time difference plan tomorrow friday 8 00 pdt 4 00 pm bdt number states 503 464 8430 give number call back get hung meeting something situation complicated fact marginal cost set capacity increment plant margin particular hour constructing stack increments plant may scattered throughout stack based respective incremental heat rates increment heat rates must strictly increasing model results capacity increments however available output plant aggregate values reported construct stack particular hour answer question homer city ny plant studying years ago attached sql query import ms access thing making appropriate modifications year hour etc unfortunately henwood documentation output variables existed created query really tell represent anymore acquaintance mine entergy lobbying get henwood provide documentation may available let talk maybe help michael karolina potter lon ect enron 08 24 00 07 08 michael analyst paul mead continental power trading group london currently working project requires use emss experience difficulties interpreting output results steven leppard research group gave name expert system consequently person contact case problems running simulations dutch market asked provide traders front end screen graphs order interpret numerical results one graphs show hourly generation stack system marginal cost run cost based scenarios sort station hourly generation need marginal cost knowledge though marginal cost generated systems marginal unit transarea marginal units query marg _ cost unit therefore sorting stations according cost calculated based outputs station detail hour query calculation follows hour generating station marginal cost mwh generation _ cost oo 00 1000 generation mwh vom _ cost mwh thought would include fuel cost start costs however marginal station get stack result calculation station given marginal station field transarea marginal units query also looked transarea _ data _ hr table transarea _ data table non costs match results happen know formula used determine marg _ cost outputs using obtain right results might easier could discuss issue phone case could please send direct telephone number struggling understanding going would appreciate help much regards karolina text htm stack generator sql txt