Israel has suspended production at the Tamar gas field off its southern coast and will seek alternative fuel sources to meet its needs, the energy ministry said on Monday following three days of violence in the region.
Some of Tamar's gas is also exported to neighbouring Jordan and Egypt.
The move comes after Hamas gunmen burst across the fence from Gaza on Saturday in the deadliest incursion into Israeli territory since Egypt and Syria's attacks in the Yom Kippur war 50 years ago.
"In the wake of the situation, Israel's defence establishment ordered the temporary suspension of natural gas supplies from the Tamar field," the energy ministry said in a statement.
"The economy's energy needs will be supplied by alternative fuels. The power industry is preparing to use alternative fuels to power its stations."
In a separate statement, the energy ministry said that Prime Minister Benjamin Netanyahu's government has authorised Energy Minister Yisrael Katz to order a state of emergency for Israel's energy sector over the next two weeks, if deemed necessary.
Such a move would allow the government to allocate natural gas to consumers should supply shortages emerge, it said.
Tamar is located some 25 kilometres (15.5 miles) off the city of Ashdod along Israel's southern Mediterranean coast.
The platform, which can been seen from the northern Gaza Strip on a clear day, is within range of rocket fire from the Gaza Strip.
Israel's largest offshore gas field, Leviathan, continues to operate normally, Chevron said.
Israel became a major regional gas supplier with the start of production at the Tamar field a decade ago, which was followed by several other gas developments.
Tamar's production rose by 18% in 2022 to 10.25 billion cubic metres (bcm), according to government data.
Chevron owns a 25% stake in Tamar, while Isramco (ISRAp.TA) holds 28.75%, the United Arab Emirates' Mubadala Energy 11%, Union Energy 11%, Tamar Petroleum (TMRP.TA) 16.75%, Dor Gas 4% and Everest owns 3.5%.
