v3.25.1
Basis of presentation (Tables)
12 Months Ended
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of subsidiaries in consolidation
                                 
    Country of     Ownership Interest     Statements of Operations  
Company Name   Incorporation     Direct     Indirect     2024     2023  
Advent Technologies, Inc.   USA       100 %     -     01/01 – 12/31     01/01 – 12/31  
Advent Technologies S.A.   Greece       -       100 %   01/01 – 12/31     01/01 – 12/31  
Advent Technologies LLC   USA       -       100 %   01/01 – 12/31     01/01 – 12/31  
Advent Technologies GmbH   Germany       100 %     -     01/01 – 12/31     01/01 – 12/31