Hi 
	I am having issues with a project I m working on.  
	I need to get P50, P75, P90, and P99 for a 320 MW design for a period of 15 years. I had read the help article about how PVsyst computes the distribution, yet I am not sure if it is safe to run the degrading tool at 3 years range and use the PR reduction as my correction factor or if running every year on its own is a must. 
 
	The second option is the optimal solution but it takes a lot of computing power and time, which makes me consider this trade-off.
 
	Thanks for your help beforehand!