Annual Performance |  |  |  |

| To view the Annual Performance page, click Annual Performance in the main windows navigation menu. The Annual Performance page displays input variables that impact the system's total annual electric output.

Solar Advisor applies the annual performance factors to the total annual electric output calculated by the hourly simulation model.

The annual performance factors can be entered either as a single value, or as a series of values that apply to each year in the project life. See Editing Annual Schedules for details.

Annual System Performance
Variable | Description | Units
System Degradation | The system degradation rate can be used to account for annual reduction in electrical output due to aging system components. Solar Advisor applies the degradation rate to the electric output in year 2 and later. The default value of 1 % results in full output in year 1, 99% of the year 1 output in year 2, 99% of the year 2 output in year 3, and so on. | %
Availability | The availability factor accounts for downtimes due to forced and scheduled outages. Solar Advisor multiplies each hour's calculated electrical output by the system availability factor. The default value of 100 % results in no reduction in output. | %