diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index bec9d27..164ca76 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -5,7 +5,7 @@
 <!-- Here goes a general summary of what this release is about -->
 
 ## Upgrading
-
+* Microgrid_config is updated from AC_ACTIVE_POWER to AC_POWER_ACTIVE in accordance with the update in client-reporting - v0.20.0
 <!-- Here goes notes on how to upgrade from previous versions, including deprecations and what they should be replaced with -->
 
 ## New Features
diff --git a/src/frequenz/gridpool/_microgrid_config.py b/src/frequenz/gridpool/_microgrid_config.py
index f18144f..45f2060 100644
--- a/src/frequenz/gridpool/_microgrid_config.py
+++ b/src/frequenz/gridpool/_microgrid_config.py
@@ -41,8 +41,8 @@ class ComponentTypeConfig:
     def __post_init__(self) -> None:
         """Set the default formula if none is provided."""
         self.formula = self.formula or {}
-        if "AC_ACTIVE_POWER" not in self.formula:
-            self.formula["AC_ACTIVE_POWER"] = "+".join(
+        if "AC_POWER_ACTIVE" not in self.formula:
+            self.formula["AC_POWER_ACTIVE"] = "+".join(
                 [f"#{cid}" for cid in self._default_cids()]
             )
 
diff --git a/tests/test_config.py b/tests/test_config.py
index fa12e7e..8cc23dc 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -16,7 +16,7 @@
     "1": {
         "meta": {"name": "Test Grid", "gid": 1, "microgrid_id": 1},
         "ctype": {
-            "pv": {"meter": [101, 102], "formula": {"AC_ACTIVE_POWER": "#12+#23"}},
+            "pv": {"meter": [101, 102], "formula": {"AC_POWER_ACTIVE": "#12+#23"}},
             "battery": {
                 "inverter": [201, 202, 203],
                 "component": [301, 302, 303, 304, 305, 306],
@@ -104,7 +104,7 @@ def test_microgrid_config_component_type_ids(
 
 def test_microgrid_config_formula(valid_microgrid_config: MicrogridConfig) -> None:
     """Test retrieval of formula for a given component type and metric."""
-    assert valid_microgrid_config.formula("pv", "AC_ACTIVE_POWER") == "#12+#23"
+    assert valid_microgrid_config.formula("pv", "AC_POWER_ACTIVE") == "#12+#23"
 
     with pytest.raises(ValueError):
         valid_microgrid_config.formula("pv", "INVALID_METRIC")