diff --git a/homeassistant/components/ovo_energy/sensor.py b/homeassistant/components/ovo_energy/sensor.py
index 0afca4f84f2..17f92a3b2e2 100644
--- a/homeassistant/components/ovo_energy/sensor.py
+++ b/homeassistant/components/ovo_energy/sensor.py
@@ -58,7 +58,7 @@ SENSOR_TYPES_ELECTRICITY: tuple[OVOEnergySensorEntityDescription, ...] = (
         name="OVO Last Electricity Cost",
         device_class=DEVICE_CLASS_MONETARY,
         state_class=STATE_CLASS_TOTAL_INCREASING,
-        value=lambda usage: usage.electricity[-1].consumption,
+        value=lambda usage: usage.electricity[-1].cost.amount,
     ),
     OVOEnergySensorEntityDescription(
         key="last_electricity_start_time",
@@ -92,7 +92,7 @@ SENSOR_TYPES_GAS: tuple[OVOEnergySensorEntityDescription, ...] = (
         device_class=DEVICE_CLASS_MONETARY,
         state_class=STATE_CLASS_TOTAL_INCREASING,
         icon="mdi:cash-multiple",
-        value=lambda usage: usage.gas[-1].consumption,
+        value=lambda usage: usage.gas[-1].cost.amount,
     ),
     OVOEnergySensorEntityDescription(
         key="last_gas_start_time",