To prepare a report on stranded investment mandated by the Texas legislature, the Texas Public Utilities Commission (PUC) has asked electric utilities to file the required financial information using a new model.
The model consists of six scenarios that use a number of variables approved by the PUC to yield a broad estimate of excess cost over market (ECOM) (em a measure of potential stranded costs. Each utility will file 54 "snapshots" of its potential excess-cost factors based on various competitive market scenarios and market-price assumptions. The model, an electronic workbook in Microsoft Excel 5.0 that contains a number of spreadsheets, is available at the PUC Internet homepage under the "Rulemaking Activities" category (http://www.puc.texas.gov).