Developing Cost-Effective Inspection Sampling Plans for Energy-Efficiency Programs at Southern California Edison

This paper summarizes the results of the development and implementation of a decision model for a major California utility company. The company's program managers use the model to select the most cost-effective sampling inspection plan for managing a portfolio of energy-efficiency programs. The decision model can be used to evaluate the performance of possible sampling strategies based on historical data. We illustrate the application of our decision model to a specific program. We further highlight several key implementation success factors and discuss the benefits that the utility company accrued from using the decision model.