Following are comments from European customers affected by the cut-off in gas supplies by Russia's gas export monopoly Gazprom to its neighbor Ukraine over a pricing dispute:
Russian supplies to France dropped by more than 70 percent on Tuesday. French Energy group GDF Suez has guaranteed supplies for customers.
Bosnia's main gas operator BH Gas said on Tuesday that Russian deliveries have stopped. Bosnia consumes around 350 million cubic meters of gas annually, most of it from Russia. Consumption in the past two days rose to 1.6 million cubic meters because of low temperatures.
Serbia's gas company said its natural gas supply from Russia were cut off on Tuesday. Serbia imports 92 percent of its gas from Russia via Hungary and Ukraine.
"All major consumers are cut off already," news agency Tanjug quoted Dusan Bajatovic, the head of Serbia's gas monopoly, as saying.
Natural gas accounts for 15 percent of Serbia's fuel use.
Russian gas imports via the TAG pipeline were 90 percent lower on Tuesday morning compared to normal levels.
Italy's industry ministry earlier said Rome was planning to increase gas imports form alternative suppliers.
Russian shipments were halted on Tuesday and Budapest will ask some power plants to switch to alternative fuel by 5 a.m. EST on Wednesday. Annual gas consumption is around 13-14 billion cubic meters. About 80 percent of this is supplied from Russia.
All Russian gas supplies via Ukraine to Bulgaria were halted on Tuesday, Bulgaria's economy ministry said.
The Neftochim Burgas refinery, controlled by Russia's LUKOIL, halted all exports of heavy fuel after a cut in Russian gas supplies prompted a switch to oil.
Slovakia will declare a state of emergency over a drop in gas supplies from Russia, Czech news agency CTK reported on Tuesday, citing Slovak Economy Minister Lubomir Jahnatek. Supplies to customers would not be cut.
E.ON Ruhrgas said gas shipments to Europe via Ukraine had been massively reduced since early on Tuesday and expects gas transit into Germany via Czech Waidhaus border point to stop entirely during the day. Energy firms warned of gas shortages if the dispute lasted much longer and sub-zero temperatures endured.
Slovenia's main gas supplier Geoplin said on Tuesday the supply of Russian gas had been cut by 90 percent from 10 p.m. EST, but the situation had "partly improved" after 4 a.m. EST. Geoplin said it was in "intensive" talks with Gazprom.
The government has approved a motion to cut gas supplies to industrial clients, the deputy prime minister said. Russian gas deliveries to Poland via Ukraine were sharply lower on Tuesday, a deputy economy minister said on TV.
Oil and gas group INA said on Tuesday delivery of Russian gas to Croatia had been stopped.
Gas supplies to the Czech Republic were down 75 percent on Tuesday, the Czech pipeline operator RWE Transgas Net said. It also said transit of Russian natural gas through the country to western Europe fell 60-70 percent.
Russian gas flows to Austria dropped 90 percent on Tuesday, oil and gas group OMV said, but added it was using its natural gas reserves to cover the shortfall.
Russian gas supplies from a western pipeline passing through Ukraine have been cut, Turkey's Energy Minister Hilmi Guler said on Tuesday. The country raised supplies of Russian gas delivered via a pipeline under the Black Sea.
All Russian gas supplies via Ukraine to Greece were halted on Tuesday, Bulgaria's economy ministry said. However, Turkey said the shortfall had not affected its gas exports to Greece.
All Russian gas supplies via Ukraine to Macedonia halted on Tuesday, Bulgaria's economy ministry said.
Russian natural gas supplies to Romania cut by 75 percent on Tuesday, the head of the Black Sea state's state-controlled pipeline operator Transgaz said on Tuesday.