QUESTION 2 [25 Marks] A wind energy project installed capacity of 2.4MW requires a capital investment of $2200000. The site's capacity factor is 0.35. Annual operation and maintenance costs are 2.0 per cent of the initial investment. Consider 5 per cent real rate of discount and the useful project life is 25 years and the local electricity price is $0.05/kWh. a) Calculate the net present value of the annual return from the electricity sale [10 Marks] Determine the benefit cost ratio of the project [6 Marks] b) Calculate the payback period of the investment for the project [3 Marks] d) Demonstrate that internal rate of return equals 14.24% [6 Marks]