diff --git a/premise/data_collection.py b/premise/data_collection.py
index 92b6eaa8..d7b46969 100644
--- a/premise/data_collection.py
+++ b/premise/data_collection.py
@@ -713,11 +713,10 @@ def __get_iam_data(
             x.lower() if isinstance(x, str) else x for x in dataframe.columns
         ]
 
-        #print(dataframe["variable"].unique())
+        # print(dataframe["variable"].unique())
 
         dataframe = dataframe.loc[dataframe["variable"].isin(variables)]
 
-
         dataframe = dataframe.rename(columns={"variable": "variables"})
 
         # make a list of headers that are integer
diff --git a/premise/electricity.py b/premise/electricity.py
index 59755d75..9a7526a9 100644
--- a/premise/electricity.py
+++ b/premise/electricity.py
@@ -1658,24 +1658,34 @@ def create_region_specific_power_plants(self):
             "Gas CHP CCS",
             "Gas CC CCS",
             "Oil CC CCS",
-            #"Oil ST",
-            #"Oil CC",
+            # "Oil ST",
+            # "Oil CC",
             "Coal CF 80-20",
             "Coal CF 50-50",
             "Storage, Flow Battery",
-            "Storage, Hydrogen"
+            "Storage, Hydrogen",
         ]
 
-        list_datasets_to_duplicate = list(set([
-            dataset["name"]
-            for dataset in self.database
-            if dataset["name"]
-            in [y for k, v in self.powerplant_map.items()
-                for y in v
-                if k in techs]
-        ]))
+        list_datasets_to_duplicate = list(
+            set(
+                [
+                    dataset["name"]
+                    for dataset in self.database
+                    if dataset["name"]
+                    in [
+                        y
+                        for k, v in self.powerplant_map.items()
+                        for y in v
+                        if k in techs
+                    ]
+                ]
+            )
+        )
 
-        list_datasets_to_duplicate.insert(0,"hydrogen storage, for grid-balancing",)
+        list_datasets_to_duplicate.insert(
+            0,
+            "hydrogen storage, for grid-balancing",
+        )
 
         list_datasets_to_duplicate.extend(
             [
@@ -1695,7 +1705,6 @@ def create_region_specific_power_plants(self):
                 *[ws.contains("name", name) for name in list_datasets_to_duplicate]
             ),
         ):
-
             new_plants = self.fetch_proxies(
                 name=dataset["name"],
                 ref_prod=dataset["reference product"],
diff --git a/premise/steel.py b/premise/steel.py
index 76151aa6..f9e31554 100644
--- a/premise/steel.py
+++ b/premise/steel.py
@@ -228,10 +228,10 @@ def create_steel_markets(self):
                         / self.iam_data.production_volumes.sel(
                             variables=["steel - primary", "steel - secondary"],
                             region=[
-                            x
-                            for x in self.iam_data.production_volumes.region.values
-                            if x != "World"
-                        ],
+                                x
+                                for x in self.iam_data.production_volumes.region.values
+                                if x != "World"
+                            ],
                         )
                         .interp(year=self.year)
                         .sum(dim=["variables", "region"])