diff --git a/homeassistant/components/growatt_server/sensor.py b/homeassistant/components/growatt_server/sensor.py
index 671631c5406..9e1fec2e144 100644
--- a/homeassistant/components/growatt_server/sensor.py
+++ b/homeassistant/components/growatt_server/sensor.py
@@ -9,7 +9,11 @@ import re
 
 import growattServer
 
-from homeassistant.components.sensor import SensorEntity, SensorEntityDescription
+from homeassistant.components.sensor import (
+    STATE_CLASS_TOTAL_INCREASING,
+    SensorEntity,
+    SensorEntityDescription,
+)
 from homeassistant.const import (
     CONF_NAME,
     CONF_PASSWORD,
@@ -88,6 +92,7 @@ TOTAL_SENSOR_TYPES: tuple[GrowattSensorEntityDescription, ...] = (
         api_key="totalEnergy",
         native_unit_of_measurement=ENERGY_KILO_WATT_HOUR,
         device_class=DEVICE_CLASS_ENERGY,
+        state_class=STATE_CLASS_TOTAL_INCREASING,
     ),
     GrowattSensorEntityDescription(
         key="total_maximum_output",
@@ -114,6 +119,7 @@ INVERTER_SENSOR_TYPES: tuple[GrowattSensorEntityDescription, ...] = (
         native_unit_of_measurement=ENERGY_KILO_WATT_HOUR,
         device_class=DEVICE_CLASS_ENERGY,
         precision=1,
+        state_class=STATE_CLASS_TOTAL_INCREASING,
     ),
     GrowattSensorEntityDescription(
         key="inverter_voltage_input_1",
@@ -474,6 +480,7 @@ MIX_SENSOR_TYPES: tuple[GrowattSensorEntityDescription, ...] = (
         api_key="eBatChargeTotal",
         native_unit_of_measurement=ENERGY_KILO_WATT_HOUR,
         device_class=DEVICE_CLASS_ENERGY,
+        state_class=STATE_CLASS_TOTAL_INCREASING,
     ),
     GrowattSensorEntityDescription(
         key="mix_battery_discharge_today",
@@ -488,6 +495,7 @@ MIX_SENSOR_TYPES: tuple[GrowattSensorEntityDescription, ...] = (
         api_key="eBatDisChargeTotal",
         native_unit_of_measurement=ENERGY_KILO_WATT_HOUR,
         device_class=DEVICE_CLASS_ENERGY,
+        state_class=STATE_CLASS_TOTAL_INCREASING,
     ),
     GrowattSensorEntityDescription(
         key="mix_solar_generation_today",
@@ -502,6 +510,7 @@ MIX_SENSOR_TYPES: tuple[GrowattSensorEntityDescription, ...] = (
         api_key="epvTotal",
         native_unit_of_measurement=ENERGY_KILO_WATT_HOUR,
         device_class=DEVICE_CLASS_ENERGY,
+        state_class=STATE_CLASS_TOTAL_INCREASING,
     ),
     GrowattSensorEntityDescription(
         key="mix_battery_discharge_w",
@@ -545,6 +554,7 @@ MIX_SENSOR_TYPES: tuple[GrowattSensorEntityDescription, ...] = (
         api_key="elocalLoadTotal",
         native_unit_of_measurement=ENERGY_KILO_WATT_HOUR,
         device_class=DEVICE_CLASS_ENERGY,
+        state_class=STATE_CLASS_TOTAL_INCREASING,
     ),
     GrowattSensorEntityDescription(
         key="mix_export_to_grid_today",
@@ -559,6 +569,7 @@ MIX_SENSOR_TYPES: tuple[GrowattSensorEntityDescription, ...] = (
         api_key="etogridTotal",
         native_unit_of_measurement=ENERGY_KILO_WATT_HOUR,
         device_class=DEVICE_CLASS_ENERGY,
+        state_class=STATE_CLASS_TOTAL_INCREASING,
     ),
     # Values from 'mix_system_status' API call
     GrowattSensorEntityDescription(
@@ -675,6 +686,7 @@ MIX_SENSOR_TYPES: tuple[GrowattSensorEntityDescription, ...] = (
         api_key="etouser_combined",  # This id is not present in the raw API data, it is added by the sensor
         native_unit_of_measurement=ENERGY_KILO_WATT_HOUR,
         device_class=DEVICE_CLASS_ENERGY,
+        state_class=STATE_CLASS_TOTAL_INCREASING,
     ),
 )
 
@@ -853,7 +865,9 @@ class GrowattData:
                 # Dashboard values have units e.g. "kWh" as part of their returned string, so we remove it
                 dashboard_values_for_mix = {
                     # etouser is already used by the results from 'mix_detail' so we rebrand it as 'etouser_combined'
-                    "etouser_combined": dashboard_data["etouser"].replace("kWh", "")
+                    "etouser_combined": float(
+                        dashboard_data["etouser"].replace("kWh", "")
+                    )
                 }
                 self.data = {
                     **mix_info,