Thanks to 
Following is an article from AP News:
US: Ukraine war 'screams' need to reject Russian energy
U.S. Energy Secretary Jennifer Granholm said Wednesday that Russia’s war on Ukraine “screams” that the world needs to stop importing oil and gas from Russia and instead move toward other forms of energy.
At an international forum on offshore wind energy in Atlantic City, Granholm said the U.S. as well as its energy industries “are on a war footing,” and called for a rapid acceleration of renewable energy including offshore wind power.
Her comments were echoed by Kadri Simson, the European Commissioner for Energy, who noted that Europe recently committed itself to a large-scale move away from Russian fossil fuel imports, and considers wind energy an important part of that transition.
Their comments came as Russia cut off natural gas to NATO members Poland and Bulgaria on Wednesday and threatened to do the same to other countries, dramatically escalating its standoff with the West over the war in Ukraine. European leaders decried the move as "blackmail."
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Simson, the European energy commissioner, cited a plan adopted last month called REPowerEU that calls for more liquid natural gas and traditional pipeline imports from nations other than Russia; doubling sustainable production of biomethane; and increasing the production and import of renewable hydrogen. That policy is to work in tandem with existing renewable energy industries including solar and wind.
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U.S. Energy Secretary were saying we need to move away from Russian fossil fuel based energy to other forms of energy, because of Russia "blackmailing" EU countries. And EU Commissioner for Energy showed the same stance.
As for what happened to Poland and Bulgaria, there is an article by Reuters:
Explainer: Options for Poland and Bulgaria after Russia supply halt
Russia's Gazprom halted natural gas supplies to Poland and Bulgaria on Wednesday as Moscow presses its demand for payment in roubles by countries it deems "unfriendly"
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Gazprom supplies almost half of Poland's annual needs - 10 billion cubic metres (bcm) versus total consumption of over 20 bcm. Less than 8% of gas is used to generate electricity, with nearly 80% powered by coal.
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Bulgaria consumes about 3 bcm of gas per year, and about 90% of that comes from Gazprom imports via Turkey.
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Poland's gas storage of 3.5 bcm is 76% full, double its level a year ago, operator data shows, giving it a comfortable cushion to keep supplying customers as requested with the heating season over and consumption usually down to about 1 bcm per month in the warm season.Bulgaria's gas storage of 550 million cubic metres is only 17.6% full, according to operator data.
Poland can source gas via two links with Germany including reverse flows along the Yamal-Europe pipeline while an interconnector with the Czech Republic can supply up to 1.5 bcm annually.
Three further links are due to open this year - a link with Lithuania with an annual capacity of 2.5 bcm on May 1, one with Slovakia with a capacity of 5-6 bcm later in the year, and a 10 bcm pipeline with Norway in October.
Bulgaria will opt to import gas from Greece and Turkey, which can be topped up with imports from LNG terminals in these countries. It will also seek an option to tap common EU gas purchases, its energy minister said.
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Certainly Poland and Bulgaria won't be happy about Russia cutting of gas supply, but in terms of gas, they are going to be okay. There are other suppliers, and it seems that the pipelines to Poland due to open this year are more than enough to cover Poland's gas consumption.
But anyway, the war could be a convenient excuse to aggressively push so-called green energy agenda. If that's the case, the war must not end right now because it would take more time to make majority of people believe that Russia is causing global energy crisis.
To make things worse(or better, I'm not sure), some EU members are continuing to buy Russian gas, unlike Poland and Bulgaria. An article by Bloomberg is below:
Four European Gas Buyers Made Ruble Payments to Russia
Four European gas buyers have already paid for supplies in rubles as President Vladimir Putin demanded, according to a person close to Russian gas giant Gazprom PJSC.
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Ten European companies have already opened the accounts at Gazprombank needed to meet Russia’s payment demands, the person said.
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Russia supplies gas via pipelines to 23 European countries.
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Out of 23 European countries, it seems that 4 countries are already buying Russian gas in rubles and 10 others are planning to do the same. And, EU is not happy. Another article from Bloomberg:
EU Tells Gas Companies Not to Bend to Russia’s Demand for Rubles
European Commission President Ursula von der Leyen warned companies not to bend to Russia's demands to pay for gas in rubles, as the continent scrambles for a united response to Moscow's weaponization of its energy resources.
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I don't know if energy is the biggest reason for the war, but at least I'm almost convinced that the U.S. and EU do not want this war to be over. I don't see anything is being done to actually de-escalate.