Our survey of the investor-owned electric utility companies and utility commissions indicates that the use of asset pricing models for estimating the cost of equity is limited in this industry. The respondents cite unfamiliarity with the arbitrage pricing model as a main reason of not using it. The use of the capital asset pricing model is also less than one would expect. However, deregulation of the industry could create a need for more-precise quantification of risk. In the new environment, utility companies may find asset pricing models more useful.
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