diff --git a/tempest/api/baremetal/base.py b/tempest/api/baremetal/base.py
index 021adaf..af6c7d7 100644
--- a/tempest/api/baremetal/base.py
+++ b/tempest/api/baremetal/base.py
@@ -51,7 +51,7 @@
 
         mgr = clients.AdminManager()
         cls.client = mgr.baremetal_client
-
+        cls.power_timeout = CONF.baremetal.power_timeout
         cls.created_objects = {'chassis': set(),
                                'port': set(),
                                'node': set()}
diff --git a/tempest/api/baremetal/test_nodestates.py b/tempest/api/baremetal/test_nodestates.py
index c658d7f..f0e084b 100644
--- a/tempest/api/baremetal/test_nodestates.py
+++ b/tempest/api/baremetal/test_nodestates.py
@@ -13,6 +13,8 @@
 #    under the License.
 
 from tempest.api.baremetal import base
+from tempest import exceptions
+from tempest.openstack.common import timeutils
 from tempest import test
 
 
@@ -20,10 +22,25 @@
     """Tests for baremetal NodeStates."""
 
     @classmethod
-    def setUpClass(self):
-        super(TestNodeStates, self).setUpClass()
-        chassis = self.create_chassis()['chassis']
-        self.node = self.create_node(chassis['uuid'])['node']
+    def setUpClass(cls):
+        super(TestNodeStates, cls).setUpClass()
+        cls.chassis = cls.create_chassis()['chassis']
+        cls.node = cls.create_node(cls.chassis['uuid'])['node']
+
+    def _validate_power_state(self, node_uuid, power_state):
+        # Validate that power state is set within timeout
+        if power_state == 'rebooting':
+            power_state = 'power on'
+        start = timeutils.utcnow()
+        while timeutils.delta_seconds(
+                start, timeutils.utcnow()) < self.power_timeout:
+            resp, node = self.client.show_node(node_uuid)
+            self.assertEqual(200, resp.status)
+            if node['power_state'] == power_state:
+                return
+        message = ('Failed to set power state within '
+                   'the required time: %s sec.' % self.power_timeout)
+        raise exceptions.TimeoutException(message)
 
     @test.attr(type='smoke')
     def test_list_nodestates(self):
@@ -31,3 +48,15 @@
         self.assertEqual('200', resp['status'])
         for key in nodestates:
             self.assertEqual(nodestates[key], self.node[key])
+
+    @test.attr(type='smoke')
+    def test_set_node_power_state(self):
+        node = self.create_node(self.chassis['uuid'])['node']
+        states = ["power on", "rebooting", "power off"]
+        for state in states:
+            # Set power state
+            resp, _ = self.client.set_node_power_state(node['uuid'],
+                                                       state)
+            self.assertEqual('202', resp['status'])
+            # Check power state after state is set
+            self._validate_power_state(node['uuid'], state)
diff --git a/tempest/services/baremetal/base.py b/tempest/services/baremetal/base.py
index 2af287f..321b08b 100644
--- a/tempest/services/baremetal/base.py
+++ b/tempest/services/baremetal/base.py
@@ -199,3 +199,14 @@
 
         """
         return self._list_request(version, permanent=True)
+
+    def _put_request(self, resource, put_object):
+        """
+        Update specified object with JSON-patch.
+
+        """
+        uri = self._get_uri(resource)
+        put_body = json.dumps(put_object)
+
+        resp, body = self.put(uri, body=put_body)
+        return resp, body
diff --git a/tempest/services/baremetal/v1/base_v1.py b/tempest/services/baremetal/v1/base_v1.py
index 296a199..52479b5 100644
--- a/tempest/services/baremetal/v1/base_v1.py
+++ b/tempest/services/baremetal/v1/base_v1.py
@@ -226,3 +226,16 @@
         """
 
         return self._patch_request('ports', uuid, patch)
+
+    @base.handle_errors
+    def set_node_power_state(self, node_uuid, state):
+        """
+        Set power state of the specified node.
+
+        :param node_uuid: The unique identifier of the node.
+        :state: desired state to set (on/off/reboot).
+
+        """
+        target = {'target': state}
+        return self._put_request('nodes/%s/states/power' % node_uuid,
+                                 target)