In the summer of 1968, ROW won promotion to the Ekstraklasa, finishing below Zagłębie Wałbrzych, but ahead of Zawisza Bydgoszcz and Lech Poznań.

In the 1974–75 season, ROW managed to reach the final of the Polish Cup, beating Metal Kluczbork, Legia Warsaw, Polonia Bytom, Lech Poznań and Górnik Zabrze in the semifinal.

Altogether, ROW played seven years in Ekstraklasa: 198 games, 50 victories, 65 draws, 83 losses, 165 goals scored.

Before the 2015–2016 season after a fan vote and a board change, the club returned its historical roots and renamed itself "KS ROW 1964", dropping its affiliation with "Energetyk".

[1][2] As of 26 September 2021[7] Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.