diff --git a/homeassistant/components/toon/const.py b/homeassistant/components/toon/const.py
index 1c9192c4544..1c58ec2cde7 100644
--- a/homeassistant/components/toon/const.py
+++ b/homeassistant/components/toon/const.py
@@ -6,12 +6,12 @@ from homeassistant.components.binary_sensor import (
     DEVICE_CLASS_PROBLEM,
 )
 from homeassistant.components.sensor import (
-    ATTR_LAST_RESET,
     ATTR_STATE_CLASS,
     DEVICE_CLASS_ENERGY,
     DEVICE_CLASS_POWER,
     DEVICE_CLASS_TEMPERATURE,
     STATE_CLASS_MEASUREMENT,
+    STATE_CLASS_TOTAL_INCREASING,
 )
 from homeassistant.const import (
     ATTR_DEVICE_CLASS,
@@ -25,7 +25,6 @@ from homeassistant.const import (
     TEMP_CELSIUS,
     VOLUME_CUBIC_METERS,
 )
-from homeassistant.util import dt as dt_util
 
 DOMAIN = "toon"
 
@@ -152,9 +151,8 @@ SENSOR_ENTITIES = {
         ATTR_MEASUREMENT: "meter",
         ATTR_UNIT_OF_MEASUREMENT: VOLUME_CUBIC_METERS,
         ATTR_ICON: "mdi:gas-cylinder",
-        ATTR_STATE_CLASS: STATE_CLASS_MEASUREMENT,
+        ATTR_STATE_CLASS: STATE_CLASS_TOTAL_INCREASING,
         ATTR_DEVICE_CLASS: DEVICE_CLASS_GAS,
-        ATTR_LAST_RESET: dt_util.utc_from_timestamp(0),
         ATTR_DEFAULT_ENABLED: False,
     },
     "gas_value": {
@@ -200,8 +198,7 @@ SENSOR_ENTITIES = {
         ATTR_MEASUREMENT: "meter_high",
         ATTR_UNIT_OF_MEASUREMENT: ENERGY_KILO_WATT_HOUR,
         ATTR_DEVICE_CLASS: DEVICE_CLASS_ENERGY,
-        ATTR_STATE_CLASS: STATE_CLASS_MEASUREMENT,
-        ATTR_LAST_RESET: dt_util.utc_from_timestamp(0),
+        ATTR_STATE_CLASS: STATE_CLASS_TOTAL_INCREASING,
         ATTR_DEFAULT_ENABLED: False,
     },
     "power_meter_reading_low": {
@@ -210,8 +207,7 @@ SENSOR_ENTITIES = {
         ATTR_MEASUREMENT: "meter_low",
         ATTR_UNIT_OF_MEASUREMENT: ENERGY_KILO_WATT_HOUR,
         ATTR_DEVICE_CLASS: DEVICE_CLASS_ENERGY,
-        ATTR_STATE_CLASS: STATE_CLASS_MEASUREMENT,
-        ATTR_LAST_RESET: dt_util.utc_from_timestamp(0),
+        ATTR_STATE_CLASS: STATE_CLASS_TOTAL_INCREASING,
         ATTR_DEFAULT_ENABLED: False,
     },
     "power_value": {
@@ -228,8 +224,7 @@ SENSOR_ENTITIES = {
         ATTR_MEASUREMENT: "meter_produced_high",
         ATTR_UNIT_OF_MEASUREMENT: ENERGY_KILO_WATT_HOUR,
         ATTR_DEVICE_CLASS: DEVICE_CLASS_ENERGY,
-        ATTR_STATE_CLASS: STATE_CLASS_MEASUREMENT,
-        ATTR_LAST_RESET: dt_util.utc_from_timestamp(0),
+        ATTR_STATE_CLASS: STATE_CLASS_TOTAL_INCREASING,
         ATTR_DEFAULT_ENABLED: False,
     },
     "solar_meter_reading_low_produced": {
@@ -238,8 +233,7 @@ SENSOR_ENTITIES = {
         ATTR_MEASUREMENT: "meter_produced_low",
         ATTR_UNIT_OF_MEASUREMENT: ENERGY_KILO_WATT_HOUR,
         ATTR_DEVICE_CLASS: DEVICE_CLASS_ENERGY,
-        ATTR_STATE_CLASS: STATE_CLASS_MEASUREMENT,
-        ATTR_LAST_RESET: dt_util.utc_from_timestamp(0),
+        ATTR_STATE_CLASS: STATE_CLASS_TOTAL_INCREASING,
         ATTR_DEFAULT_ENABLED: False,
     },
     "solar_value": {
@@ -344,8 +338,7 @@ SENSOR_ENTITIES = {
         ATTR_UNIT_OF_MEASUREMENT: VOLUME_CUBIC_METERS,
         ATTR_ICON: "mdi:water",
         ATTR_DEFAULT_ENABLED: False,
-        ATTR_STATE_CLASS: STATE_CLASS_MEASUREMENT,
-        ATTR_LAST_RESET: dt_util.utc_from_timestamp(0),
+        ATTR_STATE_CLASS: STATE_CLASS_TOTAL_INCREASING,
     },
     "water_value": {
         ATTR_NAME: "Current Water Usage",