diff --git a/pvnet/data/base_datamodule.py b/pvnet/data/base_datamodule.py
index 9e00d843..68d69713 100644
--- a/pvnet/data/base_datamodule.py
+++ b/pvnet/data/base_datamodule.py
@@ -1,4 +1,6 @@
 """ Data module for pytorch lightning """
+
+from glob import glob
 from lightning.pytorch import LightningDataModule
 from ocf_data_sampler.numpy_sample.collate import stack_np_samples_into_batch
 from ocf_datapipes.batch import (
@@ -14,6 +16,24 @@ def collate_fn(samples: list[NumpyBatch]) -> TensorBatch:
     return batch_to_tensor(stack_np_samples_into_batch(samples))
 
 
+class PremadeSamplesDataset(Dataset):
+    """Dataset to load samples from
+
+    Args:
+        sample_dir: Path to the directory of pre-saved samples.
+    """
+    def __init__(self, sample_dir: str, sample_class):
+        self.sample_paths = glob(f"{sample_dir}/*")
+        self.sample_class = sample_class
+
+    def __len__(self):
+        return len(self.sample_paths)
+
+    def __getitem__(self, idx):
+        sample = self.sample_class.load(self.sample_paths[idx])
+        return sample.to_numpy()
+
+
 class BaseDataModule(LightningDataModule):
     """Base Datamodule for training pvnet and using pvnet pipeline in ocf-data-sampler."""
 
diff --git a/pvnet/data/site_datamodule.py b/pvnet/data/site_datamodule.py
index 563afb68..bc60939e 100644
--- a/pvnet/data/site_datamodule.py
+++ b/pvnet/data/site_datamodule.py
@@ -1,35 +1,14 @@
 """ Data module for pytorch lightning """
-from glob import glob
 
-from ocf_data_sampler.sample.site import SiteSample
+import xarray as xr
 from ocf_data_sampler.torch_datasets.datasets.site import (
     SitesDataset,
+    convert_netcdf_to_numpy_sample,
 )
+from ocf_data_sampler.sample.site import SiteSample
 from torch.utils.data import Dataset
 
-from pvnet.data.base_datamodule import BaseDataModule
-
-
-class NetcdfPreMadeSamplesDataset(Dataset):
-    """Dataset to load pre-made netcdf samples"""
-
-    def __init__(
-        self,
-        sample_dir,
-    ):
-        """Dataset to load pre-made netcdf samples
-
-        Args:
-            sample_dir: Path to the directory of pre-saved samples.
-        """
-        self.sample_paths = glob(f"{sample_dir}/*.nc")
-
-    def __len__(self):
-        return len(self.sample_paths)
-
-    def __getitem__(self, idx):
-        sample = SiteSample.load(self.sample_paths[idx])
-        return sample.to_numpy()
+from pvnet.data.base_datamodule import BaseDataModule, PremadeSamplesDataset
 
 
 class SiteDataModule(BaseDataModule):
@@ -75,4 +54,4 @@ def _get_streamed_samples_dataset(self, start_time, end_time) -> Dataset:
 
     def _get_premade_samples_dataset(self, subdir) -> Dataset:
         split_dir = f"{self.sample_dir}/{subdir}"
-        return NetcdfPreMadeSamplesDataset(split_dir)
+        return PremadeSamplesDataset(split_dir, SiteSample)
diff --git a/pvnet/data/uk_regional_datamodule.py b/pvnet/data/uk_regional_datamodule.py
index 463bed19..3de9066d 100644
--- a/pvnet/data/uk_regional_datamodule.py
+++ b/pvnet/data/uk_regional_datamodule.py
@@ -1,31 +1,10 @@
 """ Data module for pytorch lightning """
-from glob import glob
 
 from ocf_data_sampler.sample.uk_regional import UKRegionalSample
 from ocf_data_sampler.torch_datasets.datasets.pvnet_uk_regional import PVNetUKRegionalDataset
 from torch.utils.data import Dataset
 
-from pvnet.data.base_datamodule import BaseDataModule
-
-
-class NumpybatchPremadeSamplesDataset(Dataset):
-    """Dataset to load NumpyBatch samples"""
-
-    def __init__(self, sample_dir):
-        """Dataset to load NumpyBatch samples
-
-        Args:
-            sample_dir: Path to the directory of pre-saved samples.
-        """
-        self.sample_paths = glob(f"{sample_dir}/*.pt")
-
-    def __len__(self):
-        return len(self.sample_paths)
-
-    def __getitem__(self, idx):
-        # Returns a dict of tensors
-        sample = UKRegionalSample.load(self.sample_paths[idx])
-        return sample.to_numpy()
+from pvnet.data.base_datamodule import BaseDataModule, PremadeSamplesDataset
 
 
 class DataModule(BaseDataModule):
@@ -71,4 +50,5 @@ def _get_streamed_samples_dataset(self, start_time, end_time) -> Dataset:
 
     def _get_premade_samples_dataset(self, subdir) -> Dataset:
         split_dir = f"{self.sample_dir}/{subdir}"
-        return NumpybatchPremadeSamplesDataset(split_dir)
+        # Returns a dict of tensors
+        return PremadeSamplesDataset(split_dir, UKRegionalSample)