diff --git a/homeassistant/components/dsmr/const.py b/homeassistant/components/dsmr/const.py
index b5fb74bbbe6..0043113772e 100644
--- a/homeassistant/components/dsmr/const.py
+++ b/homeassistant/components/dsmr/const.py
@@ -5,7 +5,10 @@ import logging
 
 from dsmr_parser import obis_references
 
-from homeassistant.components.sensor import STATE_CLASS_MEASUREMENT
+from homeassistant.components.sensor import (
+    STATE_CLASS_MEASUREMENT,
+    STATE_CLASS_TOTAL_INCREASING,
+)
 from homeassistant.const import (
     DEVICE_CLASS_CURRENT,
     DEVICE_CLASS_ENERGY,
@@ -13,7 +16,6 @@ from homeassistant.const import (
     DEVICE_CLASS_POWER,
     DEVICE_CLASS_VOLTAGE,
 )
-from homeassistant.util import dt
 
 from .models import DSMRSensorEntityDescription
 
@@ -67,32 +69,28 @@ SENSORS: tuple[DSMRSensorEntityDescription, ...] = (
         name="Energy Consumption (tarif 1)",
         device_class=DEVICE_CLASS_ENERGY,
         force_update=True,
-        last_reset=dt.utc_from_timestamp(0),
-        state_class=STATE_CLASS_MEASUREMENT,
+        state_class=STATE_CLASS_TOTAL_INCREASING,
     ),
     DSMRSensorEntityDescription(
         key=obis_references.ELECTRICITY_USED_TARIFF_2,
         name="Energy Consumption (tarif 2)",
         force_update=True,
         device_class=DEVICE_CLASS_ENERGY,
-        last_reset=dt.utc_from_timestamp(0),
-        state_class=STATE_CLASS_MEASUREMENT,
+        state_class=STATE_CLASS_TOTAL_INCREASING,
     ),
     DSMRSensorEntityDescription(
         key=obis_references.ELECTRICITY_DELIVERED_TARIFF_1,
         name="Energy Production (tarif 1)",
         force_update=True,
         device_class=DEVICE_CLASS_ENERGY,
-        last_reset=dt.utc_from_timestamp(0),
-        state_class=STATE_CLASS_MEASUREMENT,
+        state_class=STATE_CLASS_TOTAL_INCREASING,
     ),
     DSMRSensorEntityDescription(
         key=obis_references.ELECTRICITY_DELIVERED_TARIFF_2,
         name="Energy Production (tarif 2)",
         force_update=True,
         device_class=DEVICE_CLASS_ENERGY,
-        last_reset=dt.utc_from_timestamp(0),
-        state_class=STATE_CLASS_MEASUREMENT,
+        state_class=STATE_CLASS_TOTAL_INCREASING,
     ),
     DSMRSensorEntityDescription(
         key=obis_references.INSTANTANEOUS_ACTIVE_POWER_L1_POSITIVE,
@@ -229,8 +227,7 @@ SENSORS: tuple[DSMRSensorEntityDescription, ...] = (
         dsmr_versions={"5L"},
         force_update=True,
         device_class=DEVICE_CLASS_ENERGY,
-        last_reset=dt.utc_from_timestamp(0),
-        state_class=STATE_CLASS_MEASUREMENT,
+        state_class=STATE_CLASS_TOTAL_INCREASING,
     ),
     DSMRSensorEntityDescription(
         key=obis_references.LUXEMBOURG_ELECTRICITY_DELIVERED_TARIFF_GLOBAL,
@@ -238,8 +235,7 @@ SENSORS: tuple[DSMRSensorEntityDescription, ...] = (
         dsmr_versions={"5L"},
         force_update=True,
         device_class=DEVICE_CLASS_ENERGY,
-        last_reset=dt.utc_from_timestamp(0),
-        state_class=STATE_CLASS_MEASUREMENT,
+        state_class=STATE_CLASS_TOTAL_INCREASING,
     ),
     DSMRSensorEntityDescription(
         key=obis_references.ELECTRICITY_IMPORTED_TOTAL,
@@ -247,8 +243,7 @@ SENSORS: tuple[DSMRSensorEntityDescription, ...] = (
         dsmr_versions={"2.2", "4", "5", "5B"},
         force_update=True,
         device_class=DEVICE_CLASS_ENERGY,
-        last_reset=dt.utc_from_timestamp(0),
-        state_class=STATE_CLASS_MEASUREMENT,
+        state_class=STATE_CLASS_TOTAL_INCREASING,
     ),
     DSMRSensorEntityDescription(
         key=obis_references.HOURLY_GAS_METER_READING,
@@ -258,8 +253,7 @@ SENSORS: tuple[DSMRSensorEntityDescription, ...] = (
         force_update=True,
         icon="mdi:fire",
         device_class=DEVICE_CLASS_GAS,
-        last_reset=dt.utc_from_timestamp(0),
-        state_class=STATE_CLASS_MEASUREMENT,
+        state_class=STATE_CLASS_TOTAL_INCREASING,
     ),
     DSMRSensorEntityDescription(
         key=obis_references.BELGIUM_HOURLY_GAS_METER_READING,
@@ -269,8 +263,7 @@ SENSORS: tuple[DSMRSensorEntityDescription, ...] = (
         force_update=True,
         icon="mdi:fire",
         device_class=DEVICE_CLASS_GAS,
-        last_reset=dt.utc_from_timestamp(0),
-        state_class=STATE_CLASS_MEASUREMENT,
+        state_class=STATE_CLASS_TOTAL_INCREASING,
     ),
     DSMRSensorEntityDescription(
         key=obis_references.GAS_METER_READING,
@@ -280,7 +273,6 @@ SENSORS: tuple[DSMRSensorEntityDescription, ...] = (
         force_update=True,
         icon="mdi:fire",
         device_class=DEVICE_CLASS_GAS,
-        last_reset=dt.utc_from_timestamp(0),
-        state_class=STATE_CLASS_MEASUREMENT,
+        state_class=STATE_CLASS_TOTAL_INCREASING,
     ),
 )
diff --git a/tests/components/dsmr/test_sensor.py b/tests/components/dsmr/test_sensor.py
index c7e0addd800..0f1c55f47b6 100644
--- a/tests/components/dsmr/test_sensor.py
+++ b/tests/components/dsmr/test_sensor.py
@@ -18,6 +18,7 @@ from homeassistant.components.sensor import (
     ATTR_STATE_CLASS,
     DOMAIN as SENSOR_DOMAIN,
     STATE_CLASS_MEASUREMENT,
+    STATE_CLASS_TOTAL_INCREASING,
 )
 from homeassistant.const import (
     ATTR_DEVICE_CLASS,
@@ -167,8 +168,10 @@ async def test_default_setup(hass, dsmr_connection_fixture):
     assert gas_consumption.state == "745.695"
     assert gas_consumption.attributes.get(ATTR_DEVICE_CLASS) == DEVICE_CLASS_GAS
     assert gas_consumption.attributes.get(ATTR_ICON) == "mdi:fire"
-    assert gas_consumption.attributes.get(ATTR_LAST_RESET) is not None
-    assert gas_consumption.attributes.get(ATTR_STATE_CLASS) == STATE_CLASS_MEASUREMENT
+    assert gas_consumption.attributes.get(ATTR_LAST_RESET) is None
+    assert (
+        gas_consumption.attributes.get(ATTR_STATE_CLASS) == STATE_CLASS_TOTAL_INCREASING
+    )
     assert (
         gas_consumption.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == VOLUME_CUBIC_METERS
     )
@@ -267,8 +270,10 @@ async def test_v4_meter(hass, dsmr_connection_fixture):
     assert gas_consumption.attributes.get(ATTR_DEVICE_CLASS) == DEVICE_CLASS_GAS
     assert gas_consumption.attributes.get("unit_of_measurement") == VOLUME_CUBIC_METERS
     assert gas_consumption.attributes.get(ATTR_ICON) == "mdi:fire"
-    assert gas_consumption.attributes.get(ATTR_LAST_RESET) is not None
-    assert gas_consumption.attributes.get(ATTR_STATE_CLASS) == STATE_CLASS_MEASUREMENT
+    assert gas_consumption.attributes.get(ATTR_LAST_RESET) is None
+    assert (
+        gas_consumption.attributes.get(ATTR_STATE_CLASS) == STATE_CLASS_TOTAL_INCREASING
+    )
     assert (
         gas_consumption.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == VOLUME_CUBIC_METERS
     )
@@ -337,8 +342,10 @@ async def test_v5_meter(hass, dsmr_connection_fixture):
     assert gas_consumption.state == "745.695"
     assert gas_consumption.attributes.get(ATTR_DEVICE_CLASS) == DEVICE_CLASS_GAS
     assert gas_consumption.attributes.get(ATTR_ICON) == "mdi:fire"
-    assert gas_consumption.attributes.get(ATTR_LAST_RESET) is not None
-    assert gas_consumption.attributes.get(ATTR_STATE_CLASS) == STATE_CLASS_MEASUREMENT
+    assert gas_consumption.attributes.get(ATTR_LAST_RESET) is None
+    assert (
+        gas_consumption.attributes.get(ATTR_STATE_CLASS) == STATE_CLASS_TOTAL_INCREASING
+    )
     assert (
         gas_consumption.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == VOLUME_CUBIC_METERS
     )
@@ -403,8 +410,8 @@ async def test_luxembourg_meter(hass, dsmr_connection_fixture):
     assert power_tariff.state == "123.456"
     assert power_tariff.attributes.get(ATTR_DEVICE_CLASS) == DEVICE_CLASS_ENERGY
     assert power_tariff.attributes.get(ATTR_ICON) is None
-    assert power_tariff.attributes.get(ATTR_LAST_RESET) is not None
-    assert power_tariff.attributes.get(ATTR_STATE_CLASS) == STATE_CLASS_MEASUREMENT
+    assert power_tariff.attributes.get(ATTR_LAST_RESET) is None
+    assert power_tariff.attributes.get(ATTR_STATE_CLASS) == STATE_CLASS_TOTAL_INCREASING
     assert (
         power_tariff.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == ENERGY_KILO_WATT_HOUR
     )
@@ -418,8 +425,10 @@ async def test_luxembourg_meter(hass, dsmr_connection_fixture):
     assert gas_consumption.state == "745.695"
     assert gas_consumption.attributes.get(ATTR_DEVICE_CLASS) == DEVICE_CLASS_GAS
     assert gas_consumption.attributes.get(ATTR_ICON) == "mdi:fire"
-    assert gas_consumption.attributes.get(ATTR_LAST_RESET) is not None
-    assert gas_consumption.attributes.get(ATTR_STATE_CLASS) == STATE_CLASS_MEASUREMENT
+    assert gas_consumption.attributes.get(ATTR_LAST_RESET) is None
+    assert (
+        gas_consumption.attributes.get(ATTR_STATE_CLASS) == STATE_CLASS_TOTAL_INCREASING
+    )
     assert (
         gas_consumption.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == VOLUME_CUBIC_METERS
     )
@@ -488,8 +497,10 @@ async def test_belgian_meter(hass, dsmr_connection_fixture):
     assert gas_consumption.state == "745.695"
     assert gas_consumption.attributes.get(ATTR_DEVICE_CLASS) is DEVICE_CLASS_GAS
     assert gas_consumption.attributes.get(ATTR_ICON) == "mdi:fire"
-    assert gas_consumption.attributes.get(ATTR_LAST_RESET) is not None
-    assert gas_consumption.attributes.get(ATTR_STATE_CLASS) == STATE_CLASS_MEASUREMENT
+    assert gas_consumption.attributes.get(ATTR_LAST_RESET) is None
+    assert (
+        gas_consumption.attributes.get(ATTR_STATE_CLASS) == STATE_CLASS_TOTAL_INCREASING
+    )
     assert (
         gas_consumption.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == VOLUME_CUBIC_METERS
     )