Basis of presentation (Tables)

12 Months Ended

Dec. 31, 2021

Basis of presentation [Abstract]

Subsidiaries in Consolidation

The consolidated financial statements of the Company have been prepared to reflect the consolidation of the companies listed below:

Company Name	Country of Incorporation	Ownership Interest		Statements of Operations
		Direct	Indirect	2021	2020
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%	-	02/19 – 12/31	-
Advent Technologies GmbH	Germany	100%	-	09/01 – 12/31	-
Advent Technologies A/S	Denmark	100%	-	09/01 – 12/31	-
Advent Green Energy Philippines, Inc	Philippines	-	100%	09/01 – 12/31	-