(Bloomberg) -- Asia’s top liquefied natural gas importers are accelerating efforts to secure fuel for winter on fears that Russia will curb supply and further tighten the global market.

South Korea purchased more than a dozen cargoes for delivery this winter, while major Japanese utilities are looking for supply from September, according to traders. Taiwan’s CPC Corp., which had been quiet for months, returned to the spot market seeking to pick up supply for this fall, the traders said.

The surge in activity coincides with the end of scheduled maintenance for Russia’s biggest natural gas pipeline to Europe. The key link resumed early Thursday, but any disruption or reduction of supply will force Europe to procure more LNG -- putting them in direct competition with Asia, home to the world’s top importers of the super-chilled fuel.

Gas buyers in Asia want to lock in winter shipments before a potential global price spike or Russia-induced shortage. Spot prices for natural gas in Europe and Asia are already trading at an all-time high for this time of year.

Asia’s LNG price discount to Europe shrank in the last week, indicating that utilities in the Pacific are paying more to try to attract more supply. Europe has been outbidding Asian rivals for spot LNG supply so far this year due to an acute need to refill inventories.

To be sure, China -- the world’s top LNG importer last year -- has been noticeably absent from the spot market due to virus restrictions curbing demand for the fuel. If China’s economic activity picks up, that could quickly change and result in fewer LNG cargoes for Europe, Samantha Dart, Goldman Sachs Group Inc.’s head of natural gas research, told Bloomberg Television.

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