Question

4. Individual Problems 5-4 A university spent $1.6 million to install solar panels atop a parking garage. These panels will have a capacity of 400 kilowatts (kW) and have a life expectancy of 20 years. Suppose that the discount rate is 10%, that electricity can be purchased at $0.10 per kilowatt-hour (kWh), and that the marginal cost of electricity production using the solar panels is zero. Hint: It may be easier to think of the present value of operating the solar panels for 1 hour per year first. Approximately how many hours per year will the solar panels need to operate to enable this project to break even? 4,698.42 2,819.05 3,758.74 7,517.47 If the solar panels can operate only for 4,229 hours a year at maximum, the project $63,942.54 break even $159,856.34 Continue to assume that the solar panels can operate only for 4,229 hours a year at maximum. $239,784.51 In order for the project to be worthwhile (le, at least break even), the university would need a grant of at least Grade It Now Save A continue Continue without saving

Answer 1

If we think that annual number of hours as H. Then , 1.6 million a HX 0. 1x 4000 PUI FA (10%, 20) 2) 1,600,000 & Hx 40 x 8.514 2) Hz 4698. 144 Hz/48. There fore, option A 14698.4 2 appron. It pand operates for 4,229 hours a year at manimam the project will not breakeven. when Hz 4. 229

The PW of the earning PNIFA (10% 2 4229 x o. 1 xyoo x 2 4229 x 40 x 8.5136 . 2 1640 160.58 Therefore, the required grant a 1,600,000 - 1440, 160.58 218159,839.42