FRANKFURT, Dec 3 (Reuters) - Uniper and Sefe, two big energy firms that were bailed out by Berlin during Europe's energy crisis, are seen as attractive assets by potential investors, Germany's economy minister said on Wednesday.

Her comments were made at an investor conference on German energy and infrastructure in Frankfurt, where around 50 institutional investors representing more than 10 trillion euros ($11.6 trillion) in globally invested capital gathered.

The conference, led by state-backed lender KfW, is the second such event and aimed at drumming up investor interest in Europe's largest economy, which has contracted in the two past years, with only modest growth expected for 2025.

Berlin spent around 20 billion euros to stabilise both Sefe and Uniper in 2022 after Russia curbed and later stopped gas supplies, and the German government must lower stakes in both groups to a maximum of 25% plus one share by 2028.

"I note with interest that both companies are considered interesting and attractive," Economy Minister Katherina Reiche said at the summit, which was also attended by Deutsche Bank CEO Christian Sewing and senior executives at KKR and Norges Bank Investment Management.

"At this point in time, I cannot say whether or with which investors we are talking about the matter," she added, still noting that Germany had become a magnet for large energy investors.

($1 = 0.8593 euros)

(Reporting by Christoph SteitzEditing by Madeline Chambers and Miranda Murray)