How to calculate the turbine output at hub height????

Respected Sir, It is not clear still. In SAM for hour j, the result is 1214.95. 
and by using V1 = 9, V2 = 10, P(V1) = 1836 and P(V) = 1965, result is different in manual calculation ( in excel sheet)! 

can you please share you number with me, I want to talk to you on call. or kindly share your Anydesk ID for video call, so i will share my screen with you and will learn from you. 

I am really confused and stressed, my research work is lagging behind. I need to discuss it with you. 

Please! 

Hi Hamza Ali,

I am investigating these results. Sorry it is taking me a while, we are working to prepare the next version of SAM.

The power curve wind speeds are assumed to be at sea level, so they must be adjusted based on the elevation above sea level provided in the weather file, and displayed on the Wind Resource input page.

Best regards,
Paul.