Israel ordered all of Gaza's electricity supply to be cut off on Sunday in an effort to pressure Hamas into releasing the remaining Israeli hostages held in the territory.
Energy minister Eli Cohen's announcement came a week after Israel cut off all aid supplies to the territory, which has a population of more than two million people.
In a video statement on Sunday, Cohen said: "We will use all the tools at our disposal to bring back the hostages and ensure that Hamas is no longer in Gaza the day after [the war]."
The decision to cut electricity is expected to primarily affect the operation of desalination plants, which are crucial for providing clean drinking water.