BAB I ELECTRICITY MARKETrnBAB II ENERGY ECONOMY IN ENTERPRISESrnBAB III TIME SERIES ANALYSISrnBAB IV A ONE FACTOR MODEL FOR MEDIUM-TERM LOAD FORECASTINGrnBAB V RETAIL CONTRACT EVALUATION AND PRICINGrnBAB VI MATLAB IMPLEMENTATIONrnBAB VII CONCLUSION AND OUTLOOK