diff --git a/homeassistant/components/nordpool/coordinator.py b/homeassistant/components/nordpool/coordinator.py
index f2f41322aff2..3fc346ff7547 100644
--- a/homeassistant/components/nordpool/coordinator.py
+++ b/homeassistant/components/nordpool/coordinator.py
@@ -108,11 +108,11 @@ class NordPoolDataUpdateCoordinator(DataUpdateCoordinator[DeliveryPeriodsData]):
         """Fetch data from Nord Pool."""
         data = await self.api_call()
         if data and data.entries:
-            current_day = dt_util.utcnow().strftime("%Y-%m-%d")
-            for entry in data.entries:
-                if entry.requested_date == current_day:
-                    LOGGER.debug("Data for current day found")
-                    return data
+            current_day = dt_util.now().date()
+            if current_day in data.entries:
+                LOGGER.debug("Data for current day found")
+                return data
+
         if data and not data.entries and not initial:
             # Empty response, use cache
             LOGGER.debug("No data entries received")
@@ -158,16 +158,11 @@ class NordPoolDataUpdateCoordinator(DataUpdateCoordinator[DeliveryPeriodsData]):
     def merge_price_entries(self) -> list[DeliveryPeriodEntry]:
         """Return the merged price entries."""
         merged_entries: list[DeliveryPeriodEntry] = []
-        for del_period in self.data.entries:
+        for del_period in self.data.entries.values():
             merged_entries.extend(del_period.entries)
         return merged_entries
 
     def get_data_current_day(self) -> DeliveryPeriodData:
         """Return the current day data."""
-        current_day = dt_util.utcnow().strftime("%Y-%m-%d")
-        delivery_period: DeliveryPeriodData = self.data.entries[0]
-        for del_period in self.data.entries:
-            if del_period.requested_date == current_day:
-                delivery_period = del_period
-                break
-        return delivery_period
+        current_day = dt_util.now().date()
+        return self.data.entries[current_day]
diff --git a/homeassistant/components/nordpool/manifest.json b/homeassistant/components/nordpool/manifest.json
index 1ac32f28763b..85e43a3545c4 100644
--- a/homeassistant/components/nordpool/manifest.json
+++ b/homeassistant/components/nordpool/manifest.json
@@ -8,6 +8,6 @@
   "iot_class": "cloud_polling",
   "loggers": ["pynordpool"],
   "quality_scale": "platinum",
-  "requirements": ["pynordpool==0.3.2"],
+  "requirements": ["pynordpool==0.4.0"],
   "single_config_entry": true
 }
diff --git a/requirements_all.txt b/requirements_all.txt
index ca17324d56e3..b988c1968a0b 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -2326,7 +2326,7 @@ pynintendoparental==2.3.4
 pynobo==1.8.1
 
 # homeassistant.components.nordpool
-pynordpool==0.3.2
+pynordpool==0.4.0
 
 # homeassistant.components.nuki
 pynuki==1.6.3
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index d0a0ed77922a..91c630d49cba 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -1991,7 +1991,7 @@ pynintendoparental==2.3.4
 pynobo==1.8.1
 
 # homeassistant.components.nordpool
-pynordpool==0.3.2
+pynordpool==0.4.0
 
 # homeassistant.components.nuki
 pynuki==1.6.3