You Do Need power plug adapter while traveling from Solomon Islands to Togo.

Here is Why You Need An Adapter

The outlet and plug type used in Togo is C and in Solomon Islands are G and I. This is how they look like.

Solomon Islands

In Solomon Islands, outlets of type G and I are in use.

Type G

Type I

Togo

In Togo, outlets of type C are in use.

Type C