diff --git a/src/ontology/edits/oeo-physical.omn b/src/ontology/edits/oeo-physical.omn
index 052a230a9..341c5b549 100644
--- a/src/ontology/edits/oeo-physical.omn
+++ b/src/ontology/edits/oeo-physical.omn
@@ -8161,6 +8161,7 @@ pull request: https://github.com/OpenEnergyPlatform/ontology/pull/1647",
 Class: OEO_00020348
 
     Annotations: 
+        <http://purl.obolibrary.org/obo/IAO_0000115> "A power-to-gas technology is a power-to-fuel technology that describes how to combine power-to-gas systems in power-to-gas processes.",
         <http://purl.obolibrary.org/obo/IAO_0000233> "issue: https://github.com/OpenEnergyPlatform/ontology/issues/1572
 pull request: https://github.com/OpenEnergyPlatform/ontology/pull/1647",
         rdfs:label "power-to-gas technology"
@@ -8177,6 +8178,7 @@ pull request: https://github.com/OpenEnergyPlatform/ontology/pull/1647",
 Class: OEO_00020349
 
     Annotations: 
+        <http://purl.obolibrary.org/obo/IAO_0000115> "A power-to-ammonia technology is an power-to-gas technology that describes how to combine power-to-ammonia systems in power-to-ammonia processes.",
         <http://purl.obolibrary.org/obo/IAO_0000233> "issue: https://github.com/OpenEnergyPlatform/ontology/issues/1572
 pull request: https://github.com/OpenEnergyPlatform/ontology/pull/1647",
         rdfs:label "power-to-ammonia technology"
@@ -8193,6 +8195,7 @@ pull request: https://github.com/OpenEnergyPlatform/ontology/pull/1647",
 Class: OEO_00020350
 
     Annotations: 
+        <http://purl.obolibrary.org/obo/IAO_0000115> "A power-to-methane technology is an power-to-gas technology that describes how to combine power-to-methane systems in power-to-methane processes.",
         <http://purl.obolibrary.org/obo/IAO_0000233> "issue: https://github.com/OpenEnergyPlatform/ontology/issues/1572
 pull request: https://github.com/OpenEnergyPlatform/ontology/pull/1647",
         rdfs:label "power-to-methane technology"
@@ -8209,6 +8212,7 @@ pull request: https://github.com/OpenEnergyPlatform/ontology/pull/1647",
 Class: OEO_00020351
 
     Annotations: 
+        <http://purl.obolibrary.org/obo/IAO_0000115> "A power-to-liquid technology is an power-to-fuel technology that describes how to combine power-to-liquid systems in power-to-liquid processes.",
         <http://purl.obolibrary.org/obo/IAO_0000233> "issue: https://github.com/OpenEnergyPlatform/ontology/issues/1572
 pull request: https://github.com/OpenEnergyPlatform/ontology/pull/1647",
         rdfs:label "power-to-liquid technology"