1 Introduction.- 1.1 Economic issues to be analyzed.- 1.2 Market for electricity: a short overview of demand, supply, regulation and tariff structures.- I Electricity demand by time-of-use.- 2 Implementing Consumer Theory.- 2.1 Review of consumer theory.- 2.2 Two-stage budgeting approach.- 2.3 Aggregation and consumer behavior.- 2.4 Compensating and equivalent variation in a conditional demand system.- 2.5 Functional form and the AIDS model.- 2.6 Review of the literature.- 3 Representative Consumer Behavior Model.- 3.1 Model specification.- 3.2 Data and variables.- 3.3 Estimation Results.- 3.4 Partial elasticity estimates.- 3.5 Concluding comments.- 4 Aggregate Consumer Behavior Model.- 4.1 Model specification.- 4.2 Data and variables.- 4.3 Estimation results.- 4.4 Partial elasticity estimates.- 4.5 Concluding comments.- 5 Household Consumer Behavior Model.- 5.1 Model specification.- 5.2 Data and variables.- 5.3 Estimation results.- 5.4 Partial elasticity estimates.- 5.5 Concluding comments.- 6 Summary and Conclusions to Part I.- II The cost structure of Swiss electric utilities.- 7 Implementing Producer Theory.- 7.1 Review of traditional production theory.- 7.2 Functional form and the translog model.- 7.3 Output characteristics.- 7.4 Review of the literature.- 8 The Long-Run Cost Model.- 8.1 Model specification.- 8.2 Data and estimation procedure.- 8.3 Estimation results.- 8.4 Estimated economies of scale.- 8.5 Marginal and average total costs.- 8.6 Cost effects of load factor.- 8.7 Elasticities of factor demand and substitution.- 8.8 Concluding comments.- 9 The Short-Run Cost Model.- 9.1 Model specification.- 9.2 Data and estimation procedure.- 9.3 Estimation Results.- 9.4 Long-run equilibrium conditions.- 9.5 Economies of utilization and scale.- 9.6 Marginal and average variable costs.- 9.7 Elasticities of factor demand and substitution.- 9.8 Concluding comments.- 10 Summary and Conclusions to Part II.- Appendix A.- Appendix B.- References.