Looks as if the quarrel is on who will pay for the damages caused as a result of the power failures. Hopefully this has been covered in the contract new or old? and well understood by both parties. What comes out clearly is that Israel will have to come up with a step ahead as the signs of the times regarding the issue puts Israel in an awkward situation where they have to be dependants on an increasingly struggling companion unable to reign the pockets of the indifferent.
IDF strikes Gaza targets in response to rocket fire (Haaretz)
from the article: Egypt cancels natural gas deal with Israel