Electric Utility Stranded Costs: Valuation and Disclosure Issues
分析股票市场如何估值电力公用事业在放松管制下可能无法收回的搁浅成本，发现投资者预期约10%的成本由股东承担，且自愿披露的公司估值更有利，但原因在于其所在辖区有更明确的回收机制。
We analyze the stock market’s valuation of electric utility “stranded costs” (i.e., costs that might become unrecoverable under deregulation), and investigate whether stranded costs that have arisen as a result of voluntary firm business decisions are valued differently from those that are more directly linked to regulatory mandates. Further, we study whether investor valuations differ across jurisdictions. Finally, we examine the relation between investor valuation of stranded costs and the decision by utilities to make stranded cost‐related disclosures in their financial statements voluntarily. We find that investors anticipate that, on average, approximately 10% of total stranded costs will be borne by utility shareholders. Stranded costs arising from voluntary operating or investing decisions made by utilities are valued more negatively than those associated with mandatory power purchase contracts, consistent with investors assigning a higher recovery probability to the latter. Investor valuations of stranded costs associated with utility generating investments do not differ systematically across jurisdictions. We find that stranded costs are valued less negatively for voluntary disclosers not just in the year of disclosure but also in the preceding two years, implying that it is not disclosure per se that favorably influences valuation. Voluntary disclosers operate in jurisdictions that have more clearly established stranded cost recovery mechanisms, suggesting that both stranded cost disclosure and valuation are prompted by reduction in uncertainty about recoverability.