Calculate the annualized cost, expressed on a present worth basis, of a small scale wind energy system for a 20 yr period (t = 20) of analysis if the wind energy system has the following specifications: Initial wind energy cost, Cw.tot = $30,000 Salvage Value = $0 Discount rate, i = 4% Effective discount rate, i' = 4% (no inflation, i = i') Market loan rate, loan = 6% Repairs, Rx = $200/yr Property tax = 0 Maintenance + Insurance = $1000/yr Income tax bracket, Tinc = 30%