diff --git a/custom_components/simple_pid_controller/sensor.py b/custom_components/simple_pid_controller/sensor.py
index 4f26ec7..5b8e414 100644
--- a/custom_components/simple_pid_controller/sensor.py
+++ b/custom_components/simple_pid_controller/sensor.py
@@ -37,6 +37,7 @@ async def async_setup_entry(
     pid = PID(1.0, 0.1, 0.05, setpoint=50)
     pid.sample_time = 10.0
     pid.output_limits = (-10.0, 10.0)
+    handle.last_contributions = (0, 0, 0, 0)
 
     async def update_pid():
         """Update the PID output using current sensor and parameter values."""
@@ -69,24 +70,29 @@ async def update_pid():
 
         output = pid(input_value)
 
-        # Calculate contributions
-        p_contrib = kp * (setpoint - input_value) if not p_on_m else -kp * input_value
-        i_contrib = pid._integral * ki
-        d_contrib = pid._last_output - output if pid._last_output is not None else 0.0
+        # save last I contribution
+        last_i = handle.last_contributions[1]
 
-        handle.last_contributions = (p_contrib, i_contrib, d_contrib)
+        # save all latest contributions
+        handle.last_contributions = (
+            pid.components[0],
+            pid.components[1],
+            pid.components[2],
+            pid.components[1] - last_i,
+        )
 
         _LOGGER.debug(
-            "PID input=%.2f setpoint=%.2f kp=%.2f ki=%.2f kd=%.2f => output=%.2f [P=%.2f, I=%.2f, D=%.2f]",
+            "PID input=%s setpoint=%s kp=%s ki=%s kd=%s => output=%s [P=%s, I=%s, D=%s, dI=%s]",
             input_value,
-            setpoint,
-            kp,
-            ki,
-            kd,
+            pid.setpoint,
+            pid.Kp,
+            pid.Ki,
+            pid.Kd,
             output,
-            p_contrib,
-            i_contrib,
-            d_contrib,
+            handle.last_contributions[0],
+            handle.last_contributions[1],
+            handle.last_contributions[2],
+            handle.last_contributions[3],
         )
 
         if coordinator.update_interval.total_seconds() != pid.sample_time:
@@ -126,6 +132,7 @@ async def start_refresh(_: Any) -> None:
                 hass, entry, "pid_d_contrib", "D contribution", coordinator
             ),
             PIDContributionSensor(hass, entry, "error", "Error", coordinator),
+            PIDContributionSensor(hass, entry, "pid_i_delta", "I delta", coordinator),
         ]
     )
 
@@ -196,7 +203,7 @@ def __init__(
         BasePIDEntity.__init__(self, hass, entry, key, name)
 
         self._attr_entity_category = EntityCategory.DIAGNOSTIC
-        # self._attr_entity_registry_enabled_default = False
+        self._attr_entity_registry_enabled_default = False
         self._attr_state_class = SensorStateClass.MEASUREMENT
         self._key = key
         self._handle = entry.runtime_data.handle
@@ -217,5 +224,6 @@ def native_value(self):
             "pid_i_contrib": contributions[1],
             "pid_d_contrib": contributions[2],
             "error": error,
+            "pid_i_delta": contributions[3],
         }.get(self._key)
         return round(value, 2) if value is not None else None
diff --git a/tests/test_sensor.py b/tests/test_sensor.py
index 509afaa..9201041 100644
--- a/tests/test_sensor.py
+++ b/tests/test_sensor.py
@@ -47,7 +47,7 @@ async def test_pid_contribution_native_value_rounding_and_none(hass, config_entr
     """Test that PIDContributionSensor.native_value rounds correctly and returns None for unknown key."""
     handle = config_entry.runtime_data.handle
     # Provide known contributions
-    handle.last_contributions = (0.1234, 1.9876, 2.5555)
+    handle.last_contributions = (0.1234, 1.9876, 2.5555, 3.3789)
     coordinator = PIDDataCoordinator(hass, "test", lambda: 0, interval=1)
 
     # Map contribution keys to expected values
@@ -56,6 +56,7 @@ async def test_pid_contribution_native_value_rounding_and_none(hass, config_entr
         ("pid_i_contrib", round(1.9876, 2)),
         ("pid_d_contrib", round(2.5555, 2)),
         ("error", -25),
+        ("pid_i_delta", round(3.3789, 2)),
         ("unknown_key", None),  # Should return None
     ]