How to get epel-release / epel-release-next / powertools in CentOS Stream 9

I have recently installed CentOS Stream 9 and I'm finding that I can't get epel to work properly following any instructions I can find online. Resources for CentOS 8 / CentOS Stream 8 don't work and there are barely any resources for CentOS 9 Stream. I want to install epel so I can install packages like ddclient, but I can't figure it out. Normally I'd just do this:

dnf install epel-release
dnf config-manager --set-enabled powertools  # I have also tried PowerTools

But I get this error:

Error: No matching repo to modify: powertools.

I have messed around a lot trying to get epel so my set up may be messed up now, but here are my currently installed relevant packages and repos:

$ dnf list installed | grep -E 'centos|epel'
centos-gpg-keys.noarch                        9.0-3.el9                      @baseos
centos-logos.x86_64                           90.4-1.el9                     @AppStream
centos-logos-httpd.noarch                     90.4-1.el9                     @appstream
centos-stream-release.noarch                  9.0-3.el9                      @baseos
centos-stream-repos.noarch                    9.0-3.el9                      @baseos
epel-release.noarch                           8-13.el8                       @@commandline

$ dnf repolist
repo id                                                              repo name
Plex                                                                 Plex
appstream                                                            CentOS Stream 9 - AppStream
baseos                                                               CentOS Stream 9 - BaseOS

Any help would be much appreciated, I'm almost at the point of just wiping and installing CentOS Stream 8 instead. Thanks!