PJSC Gazprom is a Russian majority state-owned multinational energy corporation headquartered in the Lakhta Center in Saint Petersburg. As of 2019, with sales over $120 billion, it was, until 2023, ranked as the largest publicly listed natural gas company in the world and the largest company in Russia by revenue. In the 2020 Forbes Global 2000, Gazprom was ranked as the 32nd largest public company in the world. The Gazprom name is a contraction of the Russian words gazovaya promyshlennost. In January 2022, Gazprom displaced Sberbank from the first place in the list of the largest companies in Russia by market capitalization. In 2022, the company's revenue amounted to 8 trillion rubles. In 2023, the company is delisted from international markets, and continues substantial constriction in its operational results.
The Russia–Ukraine gas disputes refer to a number of disputes between Ukrainian oil and gas company Naftogaz Ukrayiny and Russian gas supplier Gazprom over natural gas supplies, prices, and debts. These disputes have grown beyond simple business disputes into transnational political issues—involving political leaders from several countries—that threaten natural gas supplies in numerous European countries dependent on natural gas imports from Russian suppliers, which are transported through Ukraine. Russia provides approximately a quarter of the natural gas consumed in the European Union; approximately 80% of those exports travel through pipelines across Ukrainian soil prior to arriving in the EU.
Petroleum production in Canada is a major industry which is important to the overall economy of North America. Canada has the third largest oil reserves in the world and is the world's fourth largest oil producer and fourth largest oil exporter. In 2019 it produced an average of 750,000 cubic metres per day (4.7 Mbbl/d) of crude oil and equivalent. Of that amount, 64% was upgraded from unconventional oil sands, and the remainder light crude oil, heavy crude oil and natural-gas condensate. Most of the Canadian petroleum production is exported, approximately 600,000 cubic metres per day (3.8 Mbbl/d) in 2019, with 98% of the exports going to the United States. Canada is by far the largest single source of oil imports to the United States, providing 43% of US crude oil imports in 2015.
The Yamal–Europe natural gas pipeline is a 4,107-kilometre-long (2,552 mi) pipeline connecting Russian natural gas fields in the Yamal Peninsula and Western Siberia with Poland and Germany, through Belarus. The Poland portion ceased operating in 2022.
Energy in Bulgaria is among the most important sectors of the national economy and encompasses energy and electricity production, consumption and transportation in Bulgaria. The national energy policy is implemented by the National Assembly and the Government of Bulgaria, conducted by the Ministry of Energy and regulated by the Energy and Water Regulatory Commission. The completely state-owned company Bulgarian Energy Holding owns subsidiaries operating in different energy sectors, including electricity: Kozloduy Nuclear Power Plant, Maritsa Iztok 2 Thermal Power Plant, NEK EAD and Elektroenergien sistemen operator (ESO); natural gas: Bulgargaz and Bulgartransgaz; coal mining: Maritsa Iztok Mines. In Bulgaria, energy prices for households are state-controlled, while commercial electricity prices are determined by the market.
The South Pars/North Dome field is a natural-gas condensate field located in the Persian Gulf. It is by far the world's largest natural gas field, with ownership of the field shared between Iran and Qatar. According to the International Energy Agency (IEA), the field holds an estimated 1,800 trillion cubic feet of in-situ natural gas and some 50 billion barrels of natural gas condensates. On the list of natural gas fields it has almost as much recoverable reserves as all the other fields combined. It has significant geostrategic influence.
Holocaust trains were railway transports run by the Deutsche Reichsbahn and other European railways under the control of Nazi Germany and its allies, for the purpose of forcible deportation of the Jews, as well as other victims of the Holocaust, to the Nazi concentration, forced labour, and extermination camps.
The Urengoy–Pomary–Uzhhorod pipeline is one of Russia's main natural gas export pipelines, partially owned and operated by Ukraine. It was part of the "gas in exchange for pipes program" and the Soviet-controlled bank "Ost-West Handelsbank" was opened in Frankfurt on 1 March 1973 to support the project.
The 2005–06 Russia–Ukraine gas dispute was between Ukrainian state-controlled oil and gas company Naftogaz Ukrainy and Russian national gas supplier Gazprom. The disagreements concerned natural gas supplies, prices and debts. The conflict started in March 2005, ended in January 2006 and, in addition to the gas companies, involved politicians from both countries.
The Holocaust in Ukraine was the systematic mass murder of Jews in the Reichskommissariat Ukraine, the General Government, the Crimean General Government and some areas which were located to the East of Reichskommissariat Ukraine, in the Transnistria Governorate and Bessarabia, Northern Bukovina and the Hertsa region and Carpathian Ruthenia during World War II. The listed areas are currently parts of Ukraine.
Russia supplies a significant volume of fossil fuels to other European countries. In 2021, it was the largest exporter of oil and natural gas to the European Union, (90%) and 40% of gas consumed in the EU came from Russia.
Ukraine has been estimated to possess natural gas reserves of over 670 billions cubic meters (in 2022), and in 2018 was ranked 26th among countries with proved reserves of natural gas. Its total gas reserves have been estimated at 1.870 trillion cubic meters. In 2021, Ukraine produced 19.8 billion cubic meters (bcm or Gm3) of natural gas. To satisfy domestic demand of 27.3 bcm that year, Ukraine relied on gas imports (2.6 bcm) and withdrawal from underground storage (4.9 bcm). Winter demand can reach 150 mcm per day.
Energy in Ukraine is mainly from gas and nuclear, followed by oil and coal. Ukraine has a diversified energy mix, and no fuel takes up more than a third of the country’s energy sources. The coal industry has been disrupted by conflict. Most gas and oil is imported, but since 2015 energy policy has prioritised diversifying energy supply.
Energy in Hungary describes energy and electricity production, consumption and import in Hungary. Energy policy of Hungary describes the politics of Hungary related to energy.
Energy in Jordan describes energy and electricity production, consumption and import in Jordan. Jordan is among the highest in the world in dependency on foreign energy sources, with 92.3% of the country's energy supply being imported.
Energy in Belarus describes energy and electricity production, consumption and import in Belarus. Belarus is a net energy importer. According to IEA, the energy import vastly exceeded the energy production in 2015, describing Belarus as one of the world's least energy sufficient countries in the world. Belarus is very dependent on Russia.
Energy in Serbia describes energy and electricity production, consumption and import in Serbia.
The natural gas transmission system of Ukraine is a complex of natural gas transmission pipelines for gas import and transit in Ukraine. It is one of the largest gas transmission systems in the world. The system is linked with natural gas transmission systems of Russia and Belarus on one hand, and with systems of Poland, Romania, Moldova, Hungary and Slovakia on the other hand. The system is owned by Government of Ukraine and operated by Ukrtransgaz. Some local transmission lines together with distribution sets are owned by regional gas companies.
Fossil gas supplies over a quarter of Turkey's energy. The country consumes 50 to 60 billion cubic metres of this natural gas each year, nearly all of which is imported. A large gas field in the Black Sea however started production in 2023.
The Russia–EU gas dispute flared up in March 2022 following the invasion of Ukraine on 24 February 2022. Russia and the major EU countries clashed over the issue of payment for natural gas pipelined to Europe by Russia's Gazprom, amidst sanctions on Russia that were expanded in response to Russia's 2022 invasion of Ukraine. In June, Gazprom claimed it was obliged to cut the flow of gas to Germany by more than half, as a result of such sanctions that prevented the Russian company from receiving its turbine component from Canada. On 26 September 2022, three of the four pipes of the Nord Stream 1 and 2 gas pipelines were sabotaged. This resulted in a record release of 115,000 tonnes of methane (CH4) – an equivalent of 15 million tonnes of carbon dioxide (CO2) – and is believed to have made a contribution to global warming.
Hungary 
