diff --git a/tempest/config.py b/tempest/config.py
index b79f502..67b957b 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -1188,6 +1188,12 @@
             # loaded, options registered, and _config is set.
             _register_tempest_service_clients()
 
+            # Registering service clients and pushing their configuration to
+            # the service clients register. Doing this in the config module
+            # ensures that the configuration is available by the time we
+            # discover tests from plugins.
+            plugins.TempestTestPluginManager()._register_service_clients()
+
         return getattr(self._config, attr)
 
     def set_config_path(self, path):
diff --git a/tempest/test_discover/plugins.py b/tempest/test_discover/plugins.py
index abe2b73..9ddcd9b 100644
--- a/tempest/test_discover/plugins.py
+++ b/tempest/test_discover/plugins.py
@@ -124,7 +124,6 @@
             'tempest.test_plugins', invoke_on_load=True,
             propagate_map_exceptions=True,
             on_load_failure_callback=self.failure_hook)
-        self._register_service_clients()
 
     @staticmethod
     def failure_hook(_, ep, err):