diff --git a/OpenAPI/README.md b/OpenAPI/README.md
index c0e969a3423284f17d20fc4487b36687dc426e9f..8be2519a32582f5f604c28245e1246ba51f688d5 100644
--- a/OpenAPI/README.md
+++ b/OpenAPI/README.md
@@ -103,6 +103,9 @@ The links below will open the Swagger Editor/UI and auto-load the OpenAPI YAML f
 ([Editor](https://forge.3gpp.org/swagger/tools/loader.html?yaml=OpenAPI/TS28318_DsoNrm.yaml))
 ([UI](https://forge.3gpp.org/swagger/tools/loader.html?action=ui&yaml=OpenAPI/TS28318_DsoNrm.yaml))
 
+* Energy Information NRM (TS 28.310)
+([Editor](https://forge.3gpp.org/swagger/tools/loader.html?yaml=OpenAPI/TS28310_EnergyInformationNrm.yaml))
+([UI](https://forge.3gpp.org/swagger/tools/loader.html?action=ui&yaml=OpenAPI/TS28310_EnergyInformationNrm.yaml))
 
 ## Management Services (MnS)
 
diff --git a/OpenAPI/TS28310_EnergyInformationNrm.yaml b/OpenAPI/TS28310_EnergyInformationNrm.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..496cb7c0e7756f7cf532fcfabe59a517f4f8c19b
--- /dev/null
+++ b/OpenAPI/TS28310_EnergyInformationNrm.yaml
@@ -0,0 +1,95 @@
+openapi: 3.0.1
+info:
+  title: Energy Information NRM
+  version: 19.0.0
+  description: >-
+    OAS 3.0.1 specification of the Energy Information NRM
+    © 2025, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC).
+    All rights reserved.
+externalDocs:
+  description: 3GPP TS 28.310; Energy Information NRM
+  url: http://www.3gpp.org/ftp/Specs/archive/28_series/28.310/
+paths: {}
+components:
+  schemas:
+  
+#-------- Definition of types-----------------------------------------------------
+    EnergySourceInfo:
+      type: object
+      properties:
+        energySourceType:
+          type: string
+        energySourceCef:
+          type: number
+          format: float
+          minimum: 0
+        renewableEnergy:
+          type: boolean
+        energyCompositionPercentage:
+          type: number
+          format: float
+          default: 100
+          minimum: 1
+          maximum: 100
+    EnergySupplyMode:
+      type: string
+      enum:
+        - GRID_ELECTRICITY
+        - BACKUP_ENERGY
+        - LOCALLY_GENERATED_ENERGY
+
+#-------- Definition of concrete IOCs --------------------------------------------
+    SubNetwork-ncO-EnergyInformationNrm:
+      type: object
+      properties:
+        EnergySupplyInfo:
+          $ref: '#/components/schemas/EnergySupplyInfo-Multiple'
+        EnergyInfoGroup:
+          $ref: '#/components/schemas/EnergyInfoGroup-Multiple'
+
+    EnergySupplyInfo-Single:
+      allOf:
+        - $ref: 'TS28623_GenericNrm.yaml#/components/schemas/Top'
+        - type: object
+          properties:
+            attributes:
+              type: object
+              properties:
+                energySupplyMode:
+                  $ref: '#/components/schemas/EnergySupplyMode'
+                energySourceList:
+                  type: array
+                  uniqueItems: true
+                  minItems: 1
+                  items:
+                    $ref: '#/components/schemas/EnergySourceInfo'
+    EnergyInfoGroup-Single:
+      allOf:
+        - $ref: 'TS28623_GenericNrm.yaml#/components/schemas/Top'
+        - type: object
+          properties:
+            attributes:
+              type: object
+              properties:
+                energySupplyModeRefList:
+                  $ref: 'TS28623_ComDefs.yaml#/components/schemas/DnList'
+                memberDNList:
+                  $ref: 'TS28623_ComDefs.yaml#/components/schemas/DnList'
+
+#-------- Definition of JSON arrays for name-contained IOCs ----------------------
+          
+    EnergySupplyInfo-Multiple:
+      type: array
+      items:
+        $ref: '#/components/schemas/EnergySupplyInfo-Single'
+    EnergyInfoGroup-Multiple:
+      type: array
+      items:
+        $ref: '#/components/schemas/EnergyInfoGroup-Single'
+        
+#--------------------------------- Definition ------------------------------------                          
+
+    resources-energyInformationNrm:
+      oneOf:
+        - $ref: '#/components/schemas/EnergySupplyInfo-Single'
+        - $ref: '#/components/schemas/EnergyInfoGroup-Single'        
diff --git a/OpenAPI/TS28623_FeatureNrm.yaml b/OpenAPI/TS28623_FeatureNrm.yaml
index 3171f4557d1c3e3d1f01e66a25fbfbdaa53a0286..cb4a79611f266e0aae865ea48205cc669e12215f 100644
--- a/OpenAPI/TS28623_FeatureNrm.yaml
+++ b/OpenAPI/TS28623_FeatureNrm.yaml
@@ -36,5 +36,6 @@ components:
         - $ref: 'TS28623_SubscriptionControlNrm.yaml#/components/schemas/resources-subscriptionControlNrm'
         - $ref: 'TS28623_ThresholdMonitorNrm.yaml#/components/schemas/resources-thresholdMonitorNrm'
         - $ref: 'TS28623_TraceControlNrm.yaml#/components/schemas/resources-traceControlNrm'
+        - $ref: 'TS28310_EnergyInformationNrm.yaml#/components/schemas/resources-energyInformationNrm'
 
 #----- Definitions in TS 28.623 for TS 28.532 --------------------------#   
diff --git a/OpenAPI/TS28623_GenericNrm.yaml b/OpenAPI/TS28623_GenericNrm.yaml
index 3aa14f00fbc8988d715dffd4bdb163c083247b18..c9b1c9b4551cdabfb8083245fef205540d60a767 100755
--- a/OpenAPI/TS28623_GenericNrm.yaml
+++ b/OpenAPI/TS28623_GenericNrm.yaml
@@ -608,7 +608,7 @@ components:
         - $ref: 'TS28541_NrNrm.yaml#/components/schemas/SubNetwork-ncO-NrNrm'
         - $ref: 'TS28541_5GcNrm.yaml#/components/schemas/SubNetwork-ncO-5GcNrm'
         - $ref: 'TS28318_DsoNrm.yaml#/components/schemas/SubNetwork-ncO-DsoNrm'
-    
+        - $ref: 'TS28310_EnergyInformationNrm.yaml#/components/schemas/SubNetwork-ncO-EnergyInformationNrm'    
 
     ManagedElement-Single:
       allOf: