Please help

You will conduct a CBA using the Benefit-to-Cost Ratio method for determining if a 5kW solar system is a justifiable investment. For the calculation, you will use costs and benefits that you select to include in the analysis. If you need to monetize indirect costs and/or benefits (converted to S), the conversion must use some documented source, and not some random guess of yours. Any online calculator you use is fine, but you must include it in the report. You will submit your CBA as a short analysis and report that defends the costs and benefits you chose to include in the analysis, as well as: 1) methods for converting indirect costs and benefits to dollars, 2) discount rate, and 3) analysis period