diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index d46ff52b..e9c490a8 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,9 +1,5 @@
 # Frequenz Microgrid API Client Release Notes
 
-## Summary
-
-<!-- Here goes a general summary of what this release is about -->
-
 ## Upgrading
 
 - `ApiClient`:
@@ -18,7 +14,4 @@
 ## New Features
 
 - The client now inherits from `frequenz.client.base.BaseApiClient`, so it provides a few new features, like `disconnect()`ing or using it as a context manager. Please refer to the [`BaseApiClient` documentation](https://frequenz-floss.github.io/frequenz-client-base-python/latest/reference/frequenz/client/base/client/#frequenz.client.base.client.BaseApiClient) for more information on these features.
-
-## Bug Fixes
-
-<!-- Here goes notable bug fixes that are worth a special mention or explanation -->
+- The client now supports setting reactive power for components through the new `set_reactive_power` method.
diff --git a/src/frequenz/client/microgrid/_client.py b/src/frequenz/client/microgrid/_client.py
index 8979ed5a..f6dd4973 100644
--- a/src/frequenz/client/microgrid/_client.py
+++ b/src/frequenz/client/microgrid/_client.py
@@ -432,6 +432,34 @@ async def set_power(  # noqa: DOC502 (raises ApiClientError indirectly)
             method_name="SetPowerActive",
         )
 
+    async def set_reactive_power(  # noqa: DOC502 (raises ApiClientError indirectly)
+        self, component_id: int, reactive_power_var: float
+    ) -> None:
+        """Send request to the Microgrid to set reactive power for component.
+
+        Negative values are for inductive (lagging) power , and positive values are for
+        capacitive (leading) power.
+
+        Args:
+            component_id: id of the component to set power.
+            reactive_power_var: reactive power to set for the component.
+
+        Raises:
+            ApiClientError: If the are any errors communicating with the Microgrid API,
+                most likely a subclass of
+                [GrpcError][frequenz.client.microgrid.GrpcError].
+        """
+        await client.call_stub_method(
+            self,
+            lambda: self.stub.SetPowerReactive(
+                microgrid_pb2.SetPowerReactiveParam(
+                    component_id=component_id, power=reactive_power_var
+                ),
+                timeout=int(DEFAULT_GRPC_CALL_TIMEOUT),
+            ),
+            method_name="SetPowerReactive",
+        )
+
     async def set_bounds(  # noqa: DOC503 (raises ApiClientError indirectly)
         self,
         component_id: int,
diff --git a/tests/test_client.py b/tests/test_client.py
index 6ca18475..86090fe7 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -42,6 +42,7 @@ def __init__(self, *, retry_strategy: retry.Strategy | None = None) -> None:
         mock_stub.ListComponents = mock.AsyncMock("ListComponents")
         mock_stub.ListConnections = mock.AsyncMock("ListConnections")
         mock_stub.SetPowerActive = mock.AsyncMock("SetPowerActive")
+        mock_stub.SetPowerReactive = mock.AsyncMock("SetPowerReactive")
         mock_stub.AddInclusionBounds = mock.AsyncMock("AddInclusionBounds")
         mock_stub.StreamComponentData = mock.Mock("StreamComponentData")
         super().__init__("grpc://mock_host:1234", retry_strategy=retry_strategy)
@@ -607,6 +608,48 @@ async def test_set_power_grpc_error() -> None:
         await client.set_power(component_id=83, power_w=100.0)
 
 
+@pytest.mark.parametrize(
+    "reactive_power_var",
+    [0, 0.0, 12, -75, 0.1, -0.0001, 134.0],
+)
+async def test_set_reactive_power_ok(
+    reactive_power_var: float, meter83: microgrid_pb2.Component
+) -> None:
+    """Test if charge is able to charge component."""
+    client = _TestClient()
+    client.mock_stub.ListComponents.return_value = microgrid_pb2.ComponentList(
+        components=[meter83]
+    )
+
+    await client.set_reactive_power(
+        component_id=83, reactive_power_var=reactive_power_var
+    )
+    client.mock_stub.SetPowerReactive.assert_called_once()
+    call_args = client.mock_stub.SetPowerReactive.call_args[0]
+    assert call_args[0] == microgrid_pb2.SetPowerReactiveParam(
+        component_id=83, power=reactive_power_var
+    )
+
+
+async def test_set_reactive_power_grpc_error() -> None:
+    """Test set_power() raises ApiClientError when the gRPC call fails."""
+    client = _TestClient()
+    client.mock_stub.SetPowerReactive.side_effect = grpc.aio.AioRpcError(
+        mock.MagicMock(name="mock_status"),
+        mock.MagicMock(name="mock_initial_metadata"),
+        mock.MagicMock(name="mock_trailing_metadata"),
+        "fake grpc details",
+        "fake grpc debug_error_string",
+    )
+    with pytest.raises(
+        ApiClientError,
+        match=r"Failed calling 'SetPowerReactive' on 'grpc://mock_host:1234': .* "
+        r"<status=<MagicMock name='mock_status\.name' id='.*'>>: fake grpc details "
+        r"\(fake grpc debug_error_string\)",
+    ):
+        await client.set_reactive_power(component_id=83, reactive_power_var=100.0)
+
+
 @pytest.mark.parametrize(
     "bounds",
     [