diff --git a/ontology/docs/meter_loads.md b/ontology/docs/meter_loads.md
new file mode 100644
index 0000000000..0e5a0533d9
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+++ b/ontology/docs/meter_loads.md
@@ -0,0 +1,67 @@
+# Meter Load Designation
+
+Digital Buildings provides abstract models that can be used to represent various 
+types of loads within a building and can be connected to meter entities to indicate the types
+of loads measured by each metering device. This document describes how these loadtypes 
+should be created and connected within a building configuration file.
+
+*   For an explanation of building configuration files see
+    [building_config](building_config.md)
+    
+### Create the Building Entity and Meter Device Entity
+
+Use the syntax described in [building_config](building_config.md) to create a
+facility entity for the building and a reporting entity for the meter device.
+A `CONTAINS` connection should be used to indicate that the meter exists within
+the building.
+
+### Create an Abstract Loadtype Entity
+
+Create a loadtype entity to represent each of the types of loads the meters in 
+the building measure. The entity will consist of a single abstract loadtype 
+found in the file called `LOADTYPES.yaml` in the `METER` namespace. The abstract
+loadtype does not implement any fields. A `CONTAINS` connection should be used 
+to indicate that the load exists within the building.
+
+### Connect the Loadtype Entity to the Meter Entity via a `MEASURES` Connection
+
+Add a `MEASURES` connection to the loadtype entity to indicate which meter(s) 
+provide data for it. A building may have multiple meters that 
+measure the same loadtype.
+
+## Example Building Layout and Config
+
+Example full building-loadtype-meter layout:
+
+![image](https://github.com/shambergoldstein/digitalbuildings/assets/124837286/427e4c03-c132-468c-94e7-20486117643a)
+
+Example building-loadtype-meter connection in building configuration file:
+``` yaml  
+# The building
+ccb-342:
+  code: BLDG-123
+  type: FACILITIES/BUILDING
+
+# The abstract entity for MAIN load
+abc-123:
+  code: MAIN
+  type: METERS/LOADTYPE_MAIN
+  connections:
+    ccb-342: CONTAINS
+    dde-453: MEASURES
+
+# The reporting entity for the meter
+dde-453:
+  code: EM-1
+  cloud_device_id: 1234
+  type: METERS/EM_PWM
+  connections:
+    ccb-342: CONTAINS
+  translation:
+    power_sensor:
+      present_value: points.kW.present_value
+      units:
+        key: pointset.points.kW.units
+        values: 
+          kilowatts: "kW"
+```
diff --git a/ontology/yaml/resources/METERS/entity_types/LOADTYPES.yaml b/ontology/yaml/resources/METERS/entity_types/LOADTYPES.yaml
new file mode 100644
index 0000000000..95ae72c503
--- /dev/null
+++ b/ontology/yaml/resources/METERS/entity_types/LOADTYPES.yaml
@@ -0,0 +1,77 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the License);
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an AS IS BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+### LOAD TYPES
+
+# This defines abstract load types that are measured by meters. They are not necessarily specific to any type of meter.
+
+LOADTYPE_MAIN:
+  guid: "1fa18a32-1461-45e8-ad4c-e5d030afb827"
+  description: "Represents the main load for a building, encompassing everything within the building."
+  is_abstract: true
+
+LOADTYPE_MECHANICAL:
+  guid: "dcb2fb34-c89f-4243-803c-3cda0e957c10"
+  description: "Represents an mechanical (HVAC) load within a building."
+  is_abstract: true
+
+LOADTYPE_PLUG:
+  guid: "01fa84ff-0fe0-4d75-8570-6aea5ceeb53f"
+  description: "Represents a plug (outlet) load within a building."
+  is_abstract: true
+
+LOADTYPE_LIGHTING:
+  guid: "1bf8a921-b52e-4745-acf2-ac1001f5302a"
+  description: "Represents a lighting fixture and infrastructure load within a building."
+  is_abstract: true
+
+LOADTYPE_CAFE:
+  guid: "168b157e-4de7-4c13-b466-35da0e056642"
+  description: "Represents a cafe and kitchen load within a building."
+  is_abstract: true
+
+LOADTYPE_SPARE:
+  guid: "ff156f0e-ec9c-488e-8b67-2e75e6d20f39"
+  description: "Represents an unassigned breaker load within a building."
+  is_abstract: true
+
+LOADTYPE_XFMR:
+  guid: "fa66332f-0274-4c7f-97c9-3e73c4f26c84"
+  description: "Represents a transformer load within a building."
+  is_abstract: true
+
+LOADTYPE_DIST:
+  guid: "71d483ca-233f-4b99-803b-a8c74994ef6c"
+  description: "Represents a general distribution load within a building. Used when multiple downstream categories are served."
+  is_abstract: true
+
+LOADTYPE_ATS:
+  guid: "47406858-faf0-4100-a3d2-9b40d1b01bc5"
+  description: "Represents an automatic transfer switch load within a building."
+  is_abstract: true
+
+LOADTYPE_PV:
+  guid: "e7f0dc78-9b03-4163-ab87-32281f342aeb"
+  description: "Represents a photovoltaic load within a building."
+  is_abstract: true
+
+LOADTYPE_EMERGENCY:
+  guid: "f360b259-b6cf-49ef-b828-629d596fb25c"
+  description: "Represents an emergency load within a building."
+  is_abstract: true
+
+LOADTYPE_MISC:
+  guid: "81411471-4235-4b9e-8f19-0366f94ebaee"
+  description: "Represents a miscellaneous load within a building."
+  is_abstract: true
diff --git a/ontology/yaml/resources/connections/connections.yaml b/ontology/yaml/resources/connections/connections.yaml
index e185e45045..0a1fb4d503 100644
--- a/ontology/yaml/resources/connections/connections.yaml
+++ b/ontology/yaml/resources/connections/connections.yaml
@@ -22,3 +22,5 @@ HAS_PART:
   description: "Source has some component or part defined by Target."
 HAS_RANGE:
   description: "Source has a coverage or detection range defined by Target."
+MEASURES:
+  description: "Source quantifies attributes of the Target."