With the help of Dell support I re-enabled hibernate in the power menu. Solved.
Hello,   Today I re-installed my XPS 9500 from scratch on new SSD (using USB provided by Dell - clean windows install). Everything seems to work fine except the power plan / hibernate. I have no Dell power plan and no hibernate option when selecting the power menu. I went over the drivers list on the Dell support page and installed all I could find to be related (dell power manager utility / service, various chipset drivers, etc). I can also clone the default power plan and set hibernate timeout in the advanced power settings but I can't select hibernate in power menu... Any ideas?   Thanks Haim
XPS 9500 no hibernate option / dell power plan after clean install