In the 1983–84 season, Zastal promoted to the top tier Polish Basketball League for the first time in club history.

The club stayed there for a long time, however they had to leave the league in the 1999–2000 season due to financial problems.

In June 2001, Sports Joint Stock Company Grono became the owner of the team and a season later the club returned to the second tier I Liga.

The following years the club would consistently compete for the Polish national title while also playing in Europe.

On 24 February 2022, Zielona Góra terminated their membership with VTB United League due to the Russian invasion of Ukraine.