even tougher winter next year as natural gas stocks are used up and as new supplies to replace Russian gas, including increased shipments from the United States or Qatar, are slow to come online, the International Energy Agency said in its annual World Energy Outlook, released last week.

Europe’s activity appears to be accelerating a global transition toward cleaner technologies, the I.E.A. added, as countries respond to Russia’s invasion of Ukraine by embracing hydrogen fuels, electric vehicles, heat pumps and other green energies.

But in the short term, countries will be burning more fossil fuels in response to the natural gas shortages.

gas fields in Groningen, which had been slated to be sealed because of earthquakes triggered by the extraction of the fuel.

Eleven countries, including Germany, Finland and Estonia, are now building or expanding a total of 18 offshore terminals to process liquid gas shipped in from other countries. Other projects in Latvia and Lithuania are under consideration.

Nuclear power is winning new support in countries that had previously decided to abandon it, including Germany and Belgium. Finland is planning to extend the lifetime of one reactor, while Poland and Romania plan to build new nuclear power plants.

European Commission blueprint, are voluntary and rely on buy-ins from individuals and businesses whose utility bills may be subsidized by their governments.

Energy use dropped in September in several countries, although it is hard to know for sure if the cause was balmy weather, high prices or voluntary conservation efforts inspired by a sense of civic duty. But there are signs that businesses, organizations and the public are responding. In Sweden, for example, the Lund diocese said it planned to partially or fully close 150 out of 540 churches this winter to conserve energy.

Germany and France have issued sweeping guidance, which includes lowering heating in all homes, businesses and public buildings, using appliances at off-peak hours and unplugging electronic devices when not in use.

Denmark wants households to shun dryers and use clotheslines. Slovakia is urging citizens to use microwaves instead of stoves and brush their teeth with a single glass of water.

website. “Short showers,” wrote one homeowner; another announced: “18 solar panels coming to the roof in October.”

“In the coming winter, efforts to save electricity and schedule the consumption of electricity may be the key to avoiding electricity shortages,” Fingrad, the main grid operator, said.

Businesses are being asked to do even more, and most governments have set targets for retailers, manufacturers and offices to find ways to ratchet down their energy use by at least 10 percent in the coming months.

Governments, themselves huge users of energy, are reducing heating, curbing streetlight use and closing municipal swimming pools. In France, where the state operates a third of all buildings, the government plans to cut energy use by two terawatt-hours, the amount used by a midsize city.

Whether the campaigns succeed is far from clear, said Daniel Gros, director of the Centre for European Policy Studies, a European think tank. Because the recommendations are voluntary, there may be little incentive for people to follow suit — especially if governments are subsidizing energy bills.

In countries like Germany, where the government aims to spend up to €200 billion to help households and businesses offset rising energy prices starting next year, skyrocketing gas prices are hitting consumers now. “That is useful in getting them to lower their energy use,” he said. But when countries fund a large part of the bill, “there is zero incentive to save on energy,” he said.

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