Fridolina Rolfo scored early in the second half Tuesday to give Wolfsburg a 1-0 over Barcelona and a spot in the women's Champions League final.
The German club will play for the title against either Paris Saint-Germain or four-time defending champion Lyon. The French clubs will meet in the other semifinal on Wednesday.
Wolfsburg won its two European titles in 2013 and 2014. Barcelona lost last year's final to Lyon and has yet to win the competition. The Spanish club dominated much of the match at Anoeta Stadium but couldn't capitalize on its scoring opportunities.
Rolfo scored the winning goal with a shot from close range in the 58th minute.
"It says a lot about the club that everybody wants to win and has a strong winning mentality, even if we didn't play our best today,'' she said. "We were a little bit lucky but I'm so proud that we did it.''
The final will be on Sunday in the northern Spanish city of San Sebastian, which is holding the mini-tournament that began with the quarterfinals. Barcelona's men's team was eliminated in the quarterfinals of the Champions League in Portugal, losing 8-2 to Bayern Munich.