diff --git a/yaml/xyz/openbmc_project/Inventory/Item/Chassis.interface.yaml b/yaml/xyz/openbmc_project/Inventory/Item/Chassis.interface.yaml
index 597ec4b..dd805ee 100644
--- a/yaml/xyz/openbmc_project/Inventory/Item/Chassis.interface.yaml
+++ b/yaml/xyz/openbmc_project/Inventory/Item/Chassis.interface.yaml
@@ -43,3 +43,13 @@
             description: >
                 A logical division or portion of a physical chassis that contains
                 multiple devices or systems that cannot be physically separated.
+
+associations:
+    - name: powered_by
+      description: >
+          Objects that implement Chassis can optionally implement the
+          'powered_by' association to provide a link to one or more
+          power supplies.
+      reverse_name: powering
+      required_endpoint_interfaces:
+          - xyz.openbmc_project.Inventory.Item.PowerSupply
diff --git a/yaml/xyz/openbmc_project/Inventory/Item/PowerSupply.interface.yaml b/yaml/xyz/openbmc_project/Inventory/Item/PowerSupply.interface.yaml
index 30e32a8..0d77ef0 100644
--- a/yaml/xyz/openbmc_project/Inventory/Item/PowerSupply.interface.yaml
+++ b/yaml/xyz/openbmc_project/Inventory/Item/PowerSupply.interface.yaml
@@ -1,2 +1,11 @@
 description: >
     Implement to provide PowerSupply attributes.
+
+associations:
+    - name: powering
+      description: >
+          Objects that implement PowerSupply can optionally implement the
+          'powering' association to provide a link back to a Chassis.
+      reverse_name: powered_by
+      required_endpoint_interfaces:
+          - xyz.openbmc_project.Inventory.Item.Chassis