Israel has taken its Leviathan and Karish gas fields off line temporarily following the country's attack on Iran.
This would leave Israel solely reliant on the offshore Tamar gas field to meet domestic demand, which goes mostly toward power generation.
The measures are understood to be precautionary given the escalating conflict between Israel and Iran. Greek firm Energean said on 13 June that it had suspended gas production at its Karish field following a request from the Israeli government.
Israel has targeted Iran's energy infrastructure, raising concerns that Iran may attempt to do the same.
Israel's energy ministry has said it is prepared to switch to alternative fuels to meet electricity demand if necessary. This would mean ramping up coal-fired power generation and replacing gas with diesel in its power plants.
As long as Tamar remains on line, Israel is expected to be able to meet the majority of its usual gas demand for power generation. The Chevron operated Tamar field produced 10.1bn m³ last year, compared with 13.4bn m³ used in electricity production.
Chevron's Leviathan field produced 11.3bn m³ last year, while Karish produced 5.8bn m³.
A prolonged outage at Leviathan and Karish would have a detrimental impact on Egypt and Jordan, which are heavily reliant on piped Israeli gas to meet demand.
Israel has already halted gas supplies to Egypt. In response, Cairo has stopped some gas supply to industrial users and is increasing diesel use in power generation.
A sustained halt to gas supplies from Israel would likely force Cairo to ramp up diesel and LNG imports, although higher LNG imports may only be possible later this summer when Egypt builds out its import capacity.
