You Do Need power plug adapter while traveling from Abu Dhabi to Åland Islands.

Here is Why You Need An Adapter

The outlet and plug type used in Åland Islands are C and F and in Abu Dhabi is G. This is how they look like.

Abu Dhabi

In Abu Dhabi, outlets of type G are in use.

Type G

Åland Islands

In Åland Islands, outlets of type C and F are in use.

Type C

Type F