Winter Crisis Raises Prospect of Energy Blockades in Europe

Cold weather could spur governments to halt energy flows Irish grid stopped power flows to U.K. already this winter

Europe’s heading into winter facing an unprecedented energy squeeze, and politicians are trying to figure out how to stop their citizens freezing.

If the shortages worsen, European governments could resort to curbing sales of natural gas and power to other regions. An even more extreme scenario could see them halt flows to one another, triggering a political and economic crisis.

“If it gets very cold, even within Europe you will see countries say: ‘I have the gas inside my borders and I am going to pass an urgent safety measure that no one can export for the next two weeks’,” said Marco Alvera, chief executive officer of Italian energy-infrastructure company Snam SpA. “I have been threatened in several countries over the last 20 years. Political priority is to keep your constituency.”

The European Union’s gas tanks are around 77% full. That is way below what’s normal for this time of year and leaves members especially vulnerable if the winter is severe.

Here’s a look at what it would take for European politicians to flick the switches off and which countries are the most vulnerable.

Threatening to block exports

Are governments threatening to block exports?

While no government in Europe has yet said they will halt exports, the risk increases the higher energy prices get.

In Norway, one of Europe’s biggest energy exporters, power prices have shot up seven-fold since last year. The leader of Center Party, which may soon be part of a coalition government, said he was assessing whether it’s legal to cut sales to the EU. Serbia might ban electricity exports to ensure that “people have warm homes,” President Aleksandar Vucic said this month. And France threatened to curb power to the U.K.’s Channel Islands amid a dispute over fishing waters.

More than once this winter, the Irish grid operator has shut interconnectors that send wind power to mainland Britain. Ireland has said its shortages are so severe that it could be at risk of blackouts.

Who’s vulnerable?

Outside supplies account for about 80% of the gas the EU consumes, most of it coming from Russia, Norway and Algeria.

Some of the bloc’s biggest economies are among the most exposed. Germany imports 90% of its needs. Countries such as the U.K., Belgium, Spain and Portugal face the added problem of low gas-storage capacity, according to Fabrizio Farina, an analyst at consultant Verisk Maplecroft.

The continent’s got a mass of pipelines and many of them cross several borders, creating plenty of possible choke points. Some of the biggest are Yamal, which goes from Russia through Belarus and Poland before reaching Germany, and TAG, which takes Russian gas to Austria and Italy.

The continent’s electricity network is also increasingly inter-connected. While that was meant to allow for the pooling of resources and to build an integrated energy market, it could leave some countries vulnerable to shut-offs.

How can countries block exports?

The EU has so-called ‘solidarity principles’ that are supposed to prevent any state blocking exports of power or gas and leaving another member short, especially when it comes to supplies for households.

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