Currently there is no setting for the permission to generate Static Pages. The permission exists (blog_genstatic) and is granted to Blog Owners (and admins).
With the re-emerging Autoblog plugin -now called Userblog plugin- it would be nice to be able to disallow Blog owners (or Userblog group, the group bloggers that have automatically assigned a blog) the pernission to generate Static pages.

This is pointed out before in [url=http://forums.b2evolution.net/viewtopic.php?t=14078][2.3.0cr1] Generate static page[/url] from the Bugs in version 2.0.x section.

I can do the changes if we agree this should be a permission on the User Group level rather than on the Blog level.