diff --git a/homeassistant/components/powerwall/sensor.py b/homeassistant/components/powerwall/sensor.py
index 0ffa333181d..940dcad8647 100644
--- a/homeassistant/components/powerwall/sensor.py
+++ b/homeassistant/components/powerwall/sensor.py
@@ -3,7 +3,11 @@ import logging
 
 from tesla_powerwall import MeterType
 
-from homeassistant.components.sensor import STATE_CLASS_MEASUREMENT, SensorEntity
+from homeassistant.components.sensor import (
+    STATE_CLASS_MEASUREMENT,
+    STATE_CLASS_TOTAL_INCREASING,
+    SensorEntity,
+)
 from homeassistant.const import (
     DEVICE_CLASS_BATTERY,
     DEVICE_CLASS_ENERGY,
@@ -12,7 +16,6 @@ from homeassistant.const import (
     PERCENTAGE,
     POWER_KILO_WATT,
 )
-import homeassistant.util.dt as dt_util
 
 from .const import (
     ATTR_FREQUENCY,
@@ -151,10 +154,9 @@ class PowerWallEnergySensor(PowerWallEntity, SensorEntity):
 class PowerWallEnergyDirectionSensor(PowerWallEntity, SensorEntity):
     """Representation of an Powerwall Direction Energy sensor."""
 
-    _attr_state_class = STATE_CLASS_MEASUREMENT
+    _attr_state_class = STATE_CLASS_TOTAL_INCREASING
     _attr_native_unit_of_measurement = ENERGY_KILO_WATT_HOUR
     _attr_device_class = DEVICE_CLASS_ENERGY
-    _attr_last_reset = dt_util.utc_from_timestamp(0)
 
     def __init__(
         self,