The regulated firm and the DCF model: Some lessons from financial theory


This paper explores lessons from established financial theory for allowed rate of return calculations within the constant-growth dividend (DCF) framework. Analysts using this model have been wedded to the conventional cost-of-equity formula. We set forth equivalent alternatives which make the analysts' task easier, more precise, and more confident. What is even more important, we derive a set of consistency conditions that must be observed for the appropriate use of the model. We also use a basic capital-market principle to determine an alternative, flotation-cost adjusted, rate of return, an expression which provides useful insights for regulatory participants.

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  1. Bierman, H. Jr., and J. Hass. 1984. “Equity Flotation Cost Adjustment in Utilities' Cost of Service.” Public Utilities Fortnightly 113 (March):46–49.

    Google Scholar 

  2. Brigham, F.E., D. Aberwald, and L. C. Gapenski. 1985. “Common Equity Flotation Costs and Rate Making.” Public Utilities Fortnightly 115 (May):28–36.

    Google Scholar 

  3. Fama, E.F., and M.H. Miller. 1972. The Theory of Finance. Illinois: Holt, Rinehart and Winston, Inc.

    Google Scholar 

  4. Howe, K.M., and E.F. Rasmussen. 1982. Public Utility Economics and Finance. New Jersey: Prentice-Hall, Inc.

    Google Scholar 

  5. Kahn, A.E. 1970. The Economics of Regulation: Principles and Institutions. New York: John Wiley and Sons, Inc.

    Google Scholar 

  6. MacDonald, J. 1967. Valuation of Common Stock and the Cost of Equity Capital. Unpublished Ph.D. thesis. Stanford Graduate School of Business.

  7. Myers, S.C. 1972. “Finance Theory in Rate Cases.” The Bell Journal of Economics and Management Science 3 (Spring): 58–97.

    Article  Google Scholar 

  8. Patterson, C.S. 1981. “Issue Costs in the Estimation of the Cost of Equity Capital.” Public Utilities Fortnightly 108 (July): 28–32.

    Google Scholar 

  9. Patterson, C.S. 1983. “Flotation Cost Allowance in Rate of Return Regulation: Comment.” Journal of Finance 38 (September): 1335–38.

    Article  Google Scholar 

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Beranek, W., Howe, K.M. The regulated firm and the DCF model: Some lessons from financial theory. J Regul Econ 2, 191–200 (1990).

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  • Share Price
  • Equity Capital
  • Dividend Payout
  • Equity Base
  • Discount Cash Flow