Israel's Coordinator of Government Activities in the Territories Major General Yoav Mordechai told the BBC Israel might cut off Gaza's electricity supply.
The US company is buying a 68% stake at a company value of $225 million.
The Delek Group gas partnerships made a $78.9 million profit in the first quarter, up 23%.
The State Comptroller has found costly faults in Israel Electric Corp.'s natural gas agreement with the Tamar partners.
The deal transforms the Israeli company, controlled by Yitzhak Tshuva, into a major international energy player.
CEO Dr. Noa Ruschin-Rimini: Grid4C can make everybody an electricity producer and seller and identify malfunctions in the home before the consumer knows about it.
European Energy Commissioner Miguel Arias Cañete explains why financing a gas pipeline from Israel might be worth Europe's while.
The campaign's goal is a 20% saving in electricity consumption by government companies.