MOL Hungarian Oil (Hungarian Refinery) Hungary's leading energy company, mainly engaged in oil, petrochemical products, headquartered in the capital city of Budapest, ranked 1105th in the Global Enterprise 2000 in 2014.

Hungarian Oil and Gas Public Limited Company (MOL Group) is a multinational energy company founded in 1957 and headquartered in Budapest, Hungary, which is mainly engaged in oil and gas related business and is one of the largest companies in Hungary. It is one of the largest companies in Hungary. It is one of the largest companies in Hungary;

MVM Group, a Hungarian energy company founded in 1948 and headquartered in Budapest, is the largest electricity trader in Hungary, responsible for the centralized wholesale of electricity produced by power stations to major distributors. MVM Group is the largest electricity trader in Hungary;