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On the Use of the CAPM in Public Utility Rate Cases: Comment Author(s): Dennis E. Peseau and Thomas M. Zepp Reviewed work(s): Source: Financial Management, Vol. 7, No. 3 (Autumn, 1978), pp. 52-56 Published by: Wiley on behalf of the Financial Management Association International Stable URL: http://www.jstor.org/stable/3665011 . Accessed: 08/02/2013 07:25
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Utility

Regulation and

the

CAPM:

A

Discussion

On

the

Use

of

the

CAPM Cases:

in
Comment

Public

Utility

Rate

Dennis E. Peseau

and Thomas M. Zepp

The authors are Senior Economists on the staff of the Oregon Public Utility Commissioner.

* In a recent issue of Financial Management, Professors Eugene Brigham and Roy Crum called for caution when using the Capital Asset Pricing Model (CAPM) to estimate the cost of equity capital of a regulated utility [2]. While it is hard tp question the wisdom of caution in using any method of cost of capital estimation, it is unfair to single out the CAPM method as a biased mechanism for estimating a utility's fair rate of return. This note shows

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