Budapesti Elektromos Művek (Budapest Electric Works) is a supplier of electrical power operates in Budapest, Pest county and parts of the Jász-Nagykun-Szolnok and Nógrád counties. In almost all areas, ELMÜ operates in close cooperation with ÉMÁSZ, a partnership undertaking under the same ownership, including RWE. The two companies have jointly established Magyar Áramszolgáltató Kft (Hungarian Power Supply Company). This company aims to gain customers in the liberalised electrical energy market, as well as to maintain and increase the market share of the ELMÜ/ÉMÁSZ Group.