They will be ineffective for a very simple reason: Jordan cannot keep the lights on.
This article from Ammon News describes which hours of the day the electricity will be shut off in Jordan's northern cities over the next several days.
In many areas there will be no electricity for between 3 and 6 hours today, Monday and Tuesday. They include most of Irbid, Ramtha City, the Jerash Governorate, the Al-Mafraq Governorate and elsewhere.
It does not sound like there is anything unusual in turning off electricity for a few hours a day.
Jordan is an energy-poor country and even if some people hate Israel so much to protest buying fuel from the hated Zionist entity, Jordan's king is not going to risk people rioting against him because they are freezing in the winter.