diff --git a/ocf_datapipes/config/model.py b/ocf_datapipes/config/model.py
index 5fdd32e9..9fd89c8b 100644
--- a/ocf_datapipes/config/model.py
+++ b/ocf_datapipes/config/model.py
@@ -502,9 +502,11 @@ class Satellite(DataSourceMixin, TimeResolutionMixin, DropoutMixin):
         description="The temporal resolution (in minutes) of the data."
         "Note that this needs to be divisible by 5.",
     )
-    satellite_scaling_methods: Optional[List[str]] = Field(['mean_std'],
-            description='There are few ways to scale the satellite data. '
-                        '1. None, 2. mean_std, 3. min_max')
+    satellite_scaling_methods: Optional[List[str]] = Field(
+        ["mean_std"],
+        description="There are few ways to scale the satellite data. "
+        "1. None, 2. mean_std, 3. min_max",
+    )
 
 
 class HRVSatellite(DataSourceMixin, TimeResolutionMixin, DropoutMixin):
diff --git a/ocf_datapipes/training/pvnet_site.py b/ocf_datapipes/training/pvnet_site.py
index bf61e766..066567b0 100644
--- a/ocf_datapipes/training/pvnet_site.py
+++ b/ocf_datapipes/training/pvnet_site.py
@@ -24,9 +24,9 @@
     NWP_MEANS,
     NWP_STDS,
     RSS_MEAN,
-    RSS_STD,
     RSS_RAW_MAX,
     RSS_RAW_MIN,
+    RSS_STD,
 )
 from ocf_datapipes.utils.utils import (
     combine_to_single_dataset,
@@ -276,9 +276,9 @@ def construct_sliced_data_pipeline(
             roi_width_pixels=conf_sat.satellite_image_size_pixels_width,
         )
         scaling_methods = conf_sat.satellite_scaling_methods
-        if 'min_max' in scaling_methods:
+        if "min_max" in scaling_methods:
             sat_datapipe = sat_datapipe.normalize(min_values=RSS_RAW_MIN, max_values=RSS_RAW_MAX)
-        if 'mean_std':
+        if "mean_std":
             sat_datapipe = sat_datapipe.normalize(mean=RSS_MEAN, std=RSS_STD)
 
     if "pv" in datapipes_dict: