The use of historical-cost depreciation in periods of persistent inflation decreases the present value of depreciation deductions, thus understating the true economic cost of capital and increasing the real after-tax rate of return required by potential investors. Efforts to correct these...

This paper analyzes the economnic feasibility of an investment designed to digest anaerobically cage layer manure and convert biogas into electricity which is sold to a public utility. A simulation model is used to calculate the aftertax net present value (NPV) of a digestion system for eight...