FACTBOX: 18 countries affected by Russia-Ukraine gas row

(Reuters) - Russian Prime Minister Vladimir Putin ordered his officials on Monday to re-start gas supplies via Ukraine to Europe on Tuesday, six days after a contract row cut off customers in freezing temperatures.

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Following are details of how the crisis has affected countries that depend on Russian gas.

AUSTRIA -- About 60 percent of annual demand is met by Russian gas*

Gas flows stopped on January 7.

Oil and gas group OMV was drawing on reserves, domestic production and other imports to guarantee supply.

GERMANY -- Russian gas meets about 42 percent of annual demand*

German customers remained supplied in full as German gas market leader E.ON-Ruhgas and its peers turned to gas reserves, alternative North Sea supplier countries, and a route via Belarus and Poland to bypass Ukraine. A spokesman for Wingas, which receives the bulk of its gas via the alternative route, said the status was still comfortable and had not changed over the weekend.

TURKEY -- Russia meets about 67 percent of annual gas demand*

Russian gas is expected to begin flowing again on Turkey's western pipeline from Thursday and supplies will reach normal levels on Friday, an energy ministry source told Reuters.

Turkey had shut down three of its state-owned power plants last week and Iran boosted its gas exports to Turkey by 50 percent to 18 million cubic meters late last week.

GREECE -- Russia meets about 82 percent of annual gas demand*

Russian gas supplies via Ukraine to Greece were halted on January 6. But as a latecomer to creating infrastructure to supply gas to households, Greece is better placed to ride out the gas crisis than some of its neighbors because it continues to rely on oil for heating and power production.

State-owned gas firm DEPA said Russian natural gas supplies will take at least three days to return to the Balkans and Greece due to technical reasons. Greece takes Russian gas from a pipeline through Bulgaria but also imports gas from a Turkish pipeline to cover its 9.5 million cubic meter demand daily.

ITALY -- About 28 percent of annual demand for gas is met by

Russia*

Russian gas imports via the TAG pipeline were substantially interrupted last Wednesday, with supplies reduced by 90 percent. Italy has tapped its gas reserves. It has enough gas stocks to last two months and see it through the winter, Economic Development Minister Claudio Scajola said on Thursday.

FRANCE -- About 24 pct of annual gas demand is met by Russia*

Russian shipments dropped by more than 70 percent on January 6. French Energy group GDF Suez guaranteed supplies. France does not rely on gas in the same way as Germany or Italy because 80 percent of its electricity is produced by nuclear power stations.

HUNGARY -- About 60 percent of annual gas demand is met by Russia*

Hungary will meet its gas needs mainly from domestic resources and has resumed gas shipments to Serbia and Bosnia which stopped overnight due to a technical problem, oil and gas group MOL said on Monday.

Hungary will maintain restrictions on the largest consumers, using more than 2,500 cubic meters per hour.

CZECH REPUBLIC - About 80 percent of annual gas demand is met by Russia*

The main transit pipeline from Russia to the Czech Republic and Western Europe was shut on January 7.

The dominant gas firm RWE Transgas, a unit of Germany's RWE, said no customers have suffered any shortfall. It said it had about 1.9 billion cubic meters of gas in storage, enough to supply Czech firms and households for several weeks, unless the weather was extremely cold. There were no plans yet to reduce supply to industrial customers.

Consumption is about 50 million cubic meters on an average winter day. The country now imports around 17 million cubic meters per day from Norway and Russia via Germany.

SLOVAKIA -- About 100 percent of annual demand is met by Russia*

Bratislava declared a state of emergency after Russian cut gas deliveries by 70 percent on January 6. Slovakia will wait for the outcome of talks in Brussels on the gas crisis before restarting a unit at a nuclear power station, which was shut in 2008 to comply with the country's EU accession agreement.

Slovakia said on Friday it was seeking to secure delivery of 8 to 10 million cubic meters of natural gas from sources other than Russia. Slovakia had some 1.9 billion cubic meters of gas in storage but its pipeline was not able to distribute more than 22 million cubic meters a day.

BOSNIA -- Nearly 100 percent of Bosnia's gas comes from Russia*

Russian deliveries stopped on January 6. Bosnia uses some 350 million cubic meters of gas annually. It has no gas reserves.

Natural gas accounts for around six to eight percent of Bosnia's energy use. Tens of thousands have been left without heating and some factories have closed. An alumina plant, two Slovak car factories, a steel mill and a Hungarian car maker have had to shut.

Bosnia is also seeking natural gas from Germany's E.ON.