diff --git a/homeassistant/components/shelly/const.py b/homeassistant/components/shelly/const.py
index 2c401829c30..49e33dfd5e1 100644
--- a/homeassistant/components/shelly/const.py
+++ b/homeassistant/components/shelly/const.py
@@ -92,3 +92,6 @@ KELVIN_MIN_VALUE_WHITE: Final = 2700
 KELVIN_MIN_VALUE_COLOR: Final = 3000
 
 UPTIME_DEVIATION: Final = 5
+
+LAST_RESET_UPTIME: Final = "uptime"
+LAST_RESET_NEVER: Final = "never"
diff --git a/homeassistant/components/shelly/entity.py b/homeassistant/components/shelly/entity.py
index c8b23f71bd7..a1ce2e671d1 100644
--- a/homeassistant/components/shelly/entity.py
+++ b/homeassistant/components/shelly/entity.py
@@ -3,7 +3,6 @@ from __future__ import annotations
 
 import asyncio
 from dataclasses import dataclass
-from datetime import datetime
 import logging
 from typing import Any, Callable, Final, cast
 
@@ -180,7 +179,7 @@ class BlockAttributeDescription:
     # Callable (settings, block), return true if entity should be removed
     removal_condition: Callable[[dict, aioshelly.Block], bool] | None = None
     extra_state_attributes: Callable[[aioshelly.Block], dict | None] | None = None
-    last_reset: datetime | None = None
+    last_reset: str | None = None
 
 
 @dataclass
@@ -286,6 +285,7 @@ class ShellyBlockAttributeEntity(ShellyBlockEntity, entity.Entity):
         self._unit: None | str | Callable[[dict], str] = unit
         self._unique_id: str = f"{super().unique_id}-{self.attribute}"
         self._name = get_entity_name(wrapper.device, block, self.description.name)
+        self._last_value: str | None = None
 
     @property
     def unique_id(self) -> str:
diff --git a/homeassistant/components/shelly/sensor.py b/homeassistant/components/shelly/sensor.py
index 7c2ffdbc470..56e4f63bc75 100644
--- a/homeassistant/components/shelly/sensor.py
+++ b/homeassistant/components/shelly/sensor.py
@@ -23,7 +23,7 @@ from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.typing import StateType
 from homeassistant.util import dt
 
-from .const import SHAIR_MAX_WORK_HOURS
+from .const import LAST_RESET_NEVER, LAST_RESET_UPTIME, SHAIR_MAX_WORK_HOURS
 from .entity import (
     BlockAttributeDescription,
     RestAttributeDescription,
@@ -114,6 +114,7 @@ SENSORS: Final = {
         value=lambda value: round(value / 60 / 1000, 2),
         device_class=sensor.DEVICE_CLASS_ENERGY,
         state_class=sensor.STATE_CLASS_MEASUREMENT,
+        last_reset=LAST_RESET_UPTIME,
     ),
     ("emeter", "energy"): BlockAttributeDescription(
         name="Energy",
@@ -121,7 +122,7 @@ SENSORS: Final = {
         value=lambda value: round(value / 1000, 2),
         device_class=sensor.DEVICE_CLASS_ENERGY,
         state_class=sensor.STATE_CLASS_MEASUREMENT,
-        last_reset=dt.utc_from_timestamp(0),
+        last_reset=LAST_RESET_NEVER,
     ),
     ("emeter", "energyReturned"): BlockAttributeDescription(
         name="Energy Returned",
@@ -129,7 +130,7 @@ SENSORS: Final = {
         value=lambda value: round(value / 1000, 2),
         device_class=sensor.DEVICE_CLASS_ENERGY,
         state_class=sensor.STATE_CLASS_MEASUREMENT,
-        last_reset=dt.utc_from_timestamp(0),
+        last_reset=LAST_RESET_NEVER,
     ),
     ("light", "energy"): BlockAttributeDescription(
         name="Energy",
@@ -138,6 +139,7 @@ SENSORS: Final = {
         device_class=sensor.DEVICE_CLASS_ENERGY,
         state_class=sensor.STATE_CLASS_MEASUREMENT,
         default_enabled=False,
+        last_reset=LAST_RESET_UPTIME,
     ),
     ("relay", "energy"): BlockAttributeDescription(
         name="Energy",
@@ -145,6 +147,7 @@ SENSORS: Final = {
         value=lambda value: round(value / 60 / 1000, 2),
         device_class=sensor.DEVICE_CLASS_ENERGY,
         state_class=sensor.STATE_CLASS_MEASUREMENT,
+        last_reset=LAST_RESET_UPTIME,
     ),
     ("roller", "rollerEnergy"): BlockAttributeDescription(
         name="Energy",
@@ -152,6 +155,7 @@ SENSORS: Final = {
         value=lambda value: round(value / 60 / 1000, 2),
         device_class=sensor.DEVICE_CLASS_ENERGY,
         state_class=sensor.STATE_CLASS_MEASUREMENT,
+        last_reset=LAST_RESET_UPTIME,
     ),
     ("sensor", "concentration"): BlockAttributeDescription(
         name="Gas Concentration",
@@ -264,7 +268,16 @@ class ShellySensor(ShellyBlockAttributeEntity, SensorEntity):
     @property
     def last_reset(self) -> datetime | None:
         """State class of sensor."""
-        return self.description.last_reset
+        if self.description.last_reset == LAST_RESET_UPTIME:
+            self._last_value = get_device_uptime(
+                self.wrapper.device.status, self._last_value
+            )
+            return dt.parse_datetime(self._last_value)
+
+        if self.description.last_reset == LAST_RESET_NEVER:
+            return dt.utc_from_timestamp(0)
+
+        return None
 
     @property
     def unit_of_measurement(self) -> str | None:
diff --git a/homeassistant/components/shelly/utils.py b/homeassistant/components/shelly/utils.py
index d8ce5ae9e45..d1e2947d5ac 100644
--- a/homeassistant/components/shelly/utils.py
+++ b/homeassistant/components/shelly/utils.py
@@ -136,7 +136,7 @@ def is_momentary_input(settings: dict[str, Any], block: aioshelly.Block) -> bool
     return button_type in ["momentary", "momentary_on_release"]
 
 
-def get_device_uptime(status: dict[str, Any], last_uptime: str) -> str:
+def get_device_uptime(status: dict[str, Any], last_uptime: str | None) -> str:
     """Return device uptime string, tolerate up to 5 seconds deviation."""
     delta_uptime = utcnow() - timedelta(seconds=status["uptime"])