SOCIAL COST BENEFIT ANALYSIS OF BOX TYPE SOLAR COOKER

摘要

Social cost benefit analysis of an investment in a box type solar cooker has been made. The economic andfinancial costs per meal cooked by a box type solar cooker have been estimated. The fuel saving accrued dueto the use of a box type solar cooker has been valued at the economic cost(s) of the respective fuel(s). Thepotential reduction in the amount of CO2 released in the atmosphere due to the use of the box type solarcooker has also been taken into account in the estimation of the economic benefits. The discounted paybackperiod, net present value (NPV), benefit to cost ratio and internal rate of return have been estimated. Theeconomic feasibility of the box type solar cooker depends upon the fuel saved (i. e. kerosene, LPG and coaletc.), the NPV being highest for the case of coal substitution. As the economic benefits of using the box typesolar cooker also include the cost of reduced CO_2 emissions, the economic indices are substantially higherthan their financial counterparts.