Purpose:
The economic analysis model used on this page is designed to estimate the lifetime performance of small scale wind turbines. The model serves as a tool to conduct feasibility analyses for specific sites within the state, as well as to conduct sensitivity analyses for potential renewable incentives not currently offered in Virginia. The performance results calculated by the model include both economic and environmental, which are listed below.

Economic	Environmental
Cost of Turbine Electricity	Pounds of CO2 not Emitted
Total Installed Costs	Number of Trees Planted
Discounted Lifetime Costs	Acres of Trees
Discounted Lifetime Profits	Gallons of Gasoline not Burned
Total Expense to Landowner	Miles not Driven by Car
Life Cycle Costs (LCC)
Savings to Investment Ratio (SIR)
Internal Rate of Return

How to Use:
To use this model, begin by clicking on the Economics command button located on the menu bar at the top of this screen. As you proceed from left to right through the menu bar, you will be presented with variables which should be modified to reflect the data for your specific site. Each variable has a button to its right; entitled See Info, clicking this button opens a pop-up window that explains the variable in question. For each variable a value should be entered into the cell associated with it, or if you are unsure, leave the default value. Once on the Turbine Analysis page, you may choose from a series of turbine models for an individual analysis. Click on the Submit Turbine Info command button to see an informative summary table on the turbine(s) you've selected. Choose a turbine by checking its option button, then click on the Submit for Report command button. After clicking Submit for Report a new button will appear, See Report, click this button to see the results presented in one consolidated summary report. Here you will see the overall results in a graphical format which represents the future electricity costs over 25 years with and without the selected turbine installed. You will see three graphs, one based on the economic incentives you input, one with known economic incentives available in Virginia, and one without any incentives applied to it. You may use the command buttons to navigate through the model and are free to change any of your inputs and resubmit to generate new results.