This paper examines the appropriate term of the risk free rate to be used by a regulator in price control situations, most particularly in the presence of corporate debt. If the regulator seeks to ensure that the present value of the future cash flows to equity holders equals their initial...

Hall (2007) challenges a fundamental point in the analysis of Lally (2007) and earlier papers: if the risk free rate within the allowed rate of return matches the regulatory term, then the present value of future cash flows PV0 equals equityholders initial investment C(1-L). Hall argues that...