I never get this information on time. Could be, because I am not listening to Radio Split, or because of the short notice from HEP (Croatian Electricity Supply) - usually the day before.
This time, however, I have 3 whole days to prepare. Knowing myself well, I am sure, I will forget all about it by Monday..
According to Stari-Grad.hr, there will be a power outage on Monday and Tuesday on various locations. Starting in Vrboska, than Jelsa, than villages and Stari Grad on Monday. Followed by Rudina and the rest of Stari Grad on Tuesday.
So, check out the schedule and plan some non-electricity related activities..