Western Europe has been buying Russian Natural Gas since the 1960s. It has weathered all kinds of Cold War crises over the decades. Indeed, it still flows right now, in the middle of war in the Ukraine, where many of the pipelines are located. There are extensive gas networks that were supplied by Russia in all the former Soviet states. Russian gas is sold to a lot of countries in Europe, not just Germany. Natural Gas is easily stored and it is not as if when it get switch off, the heating goes off and the lights go out. Russia gets substantial income from Gas and Oil sales. If it stopped, its economy would go into an instant tailspin. Dependence on Russian gas is a relatively new. Until recently the the UK and Dutch gas fields provided much of the requirement. Norway is currently a large supplier. Natural Gas can also be supplied by Liquified Natural Gas (LNG) tankers at port terminals. The extensive natural gas pipeline network can be made to flow in the opposite direction to supply dependent states from LNG terminals and the Norwegian pipelines. Natural Gas demand it expected to go down as renewables increase. There are some huge investments in wind farms in the North Sea and the Baltic expected to come on stream in the next years. Germany has invested a lot in a HVDC electricity grid to move that power across the country.
Now what Germany, and every other country world did not see coming is Putin’s invasion of Ukraine and its potential economic isolation from much of the world. It was assumed that cutting off the gas pipelines would be a something that would only happen in a WW3 scenario. Russia is one of the worlds major Oil and Gas producers. They have a huge asset that provides a very steady and reliable income and control over that income is the basis of political power. Switching off that money supply is probably the quickest way to change the political leadership.
From time to time, the advanced economies go through an energy crisis. If the pipelines from Russia suddenly get switched off, there will be such a crisis and there may be a difficult few years. But that would be nothing compared to the effect it would have on the Russian economy and the political turmoil it would create.
The German post war policy of economic engagement with its European neighbours to provide political stability built on long term trade links has proved to be very sound in the decades since WW2. In the Western Europe, with France, it built the European Union that was extended to include the former Sovet states. In the East, it bought Oil and Gas from Russia and this has been to their mutual benefit.
Long term, the idea is to move from Coal and Nukes via Natural Gas to an energy policy based on electricity from renewable sources. Many countries have the same objective. Germany and Poland are particularly dependent on highly polluting coal power stations. They have a long way to go.
There may be a ‘little local difficulty’ with some excitement in Russia at the moment. But, if WW3 does not start, it will settle down after a while. There is no way in which big energy infrastructure projects can be implemented quickly, much though some may wish it were so. Everything is measured in time spans of five years or more.
Most countries have contingency plans, should there be an energy crisis. I am sure there has been a flurry of activity over the past few months of tension. Politicians all know, that if the the lights go out because there is no power, their tenure in office is likely to be shorter that they would have hoped.