 PGNiG's trade and storage operations are in charge of the company's international natural gas trading business.The company operates seven underground gas storage facilities in Poland, that are located in Brzeźnica, Husów, Mogilno, Strachocina, Swarzów, Wierzchowice and Kosakowo.Since 2017, PGNiG also operates storage facilities in Ukraine, partnering with the local gas transmission operator Ukrtransgaz.