diff --git a/assume/markets/clearing_algorithms_extended.py b/assume/markets/clearing_algorithms_extended.py
index 5e2df479..e5c84de5 100644
--- a/assume/markets/clearing_algorithms_extended.py
+++ b/assume/markets/clearing_algorithms_extended.py
@@ -197,7 +197,7 @@ def handle_data_response(self, content: dict, meta: MetaDict) -> None:
         Args:
             content (dict): message content with data property
             meta (MetaDict): message meta
-        """        
+        """
         if meta["in_reply_to"] not in self.futures:
             logger.error(f'data response {meta["in_reply_to"]} not in awaited futures')
         else:
@@ -215,7 +215,7 @@ def validate_registration(self, content: dict, meta: MetaDict) -> bool:
 
         Returns:
             bool: True if agent fulfills requirements
-        """        
+        """
         if self.limitation:
             if self.limitation == "only_co2emissionless":
                 requirement = lambda x: x in [
@@ -438,7 +438,7 @@ async def execute_contract(self, contract: Order):
                 },
                 # TODO other market might not always be the same agent
                 receiver_addr=self.context.addr,
-                receiver_id=self.context.aid,  
+                receiver_id=self.context.aid,
                 acl_metadata={
                     "sender_addr": self.context.addr,
                     "sender_id": self.context.aid,
@@ -597,9 +597,9 @@ def cfd(
 
     # TODO does not work with multiple markets with differing time scales..
     # this only works for whole trading hours (as x MW*1h == x MWh)
-    #price_series = (contract["price"] - market_index[start:end]) * gen_series[seller][
+    # price_series = (contract["price"] - market_index[start:end]) * gen_series[seller][
     #    start:end
-    #]
+    # ]
     price_series = (market_index[start:end] - contract["price"]) * gen_series[start:end]
     price_series = price_series.dropna()
     price = sum(price_series)
diff --git a/assume/scenario/loader_amiris.py b/assume/scenario/loader_amiris.py
index c71fb486..74e7423e 100644
--- a/assume/scenario/loader_amiris.py
+++ b/assume/scenario/loader_amiris.py
@@ -377,7 +377,7 @@ async def load_amiris_async(
         scenario (str): the scenario name
         study_case (str): study case to define
         base_path (str): base path from where to load the amrisi scenario
-    """    
+    """
     amiris_scenario = read_amiris_yaml(base_path)
     # DeliveryIntervalInSteps = 3600
     # In practice - this seems to be a fixed number in AMIRIS
diff --git a/assume/strategies/extended.py b/assume/strategies/extended.py
index 2aa1fd6e..7d1958b8 100644
--- a/assume/strategies/extended.py
+++ b/assume/strategies/extended.py
@@ -80,7 +80,9 @@ class SupportStrategy(NaiveStrategy):
     Strategy for OTC (over the counter trading) markets
     """
 
-    def __init__(self, contract_types: list[str] = [], contract_fraction=1, *args, **kwargs):
+    def __init__(
+        self, contract_types: list[str] = [], contract_fraction=1, *args, **kwargs
+    ):
         """
         Init function of the support strategy.
         Pass a list of contract_types for which this strategy creates individual bids each.
@@ -117,9 +119,7 @@ def calculate_bids(
 
         bids = []
         # demand is the other way around
-        power = (
-            unit.min_power if type(unit).__name__ == "Demand" else unit.max_power
-        )
+        power = unit.min_power if type(unit).__name__ == "Demand" else unit.max_power
         # bid 40% as support for showcase reasons
         power *= self.contract_fraction
         # require only 40 €/MWh
diff --git a/examples/world_script_policy.py b/examples/world_script_policy.py
index c940ca7f..bd4fee7d 100644
--- a/examples/world_script_policy.py
+++ b/examples/world_script_policy.py
@@ -107,7 +107,10 @@ async def init():
             "min_power": 0,
             "max_power": 1000,
             "bidding_strategies": {"energy": "support", "financial_support": "support"},
-            "bidding_params": {"contract_fraction": 1.0, "contract_types": ["CFD"]},  # Feed-In-Tariff
+            "bidding_params": {
+                "contract_fraction": 1.0,
+                "contract_types": ["CFD"],
+            },  # Feed-In-Tariff
             "technology": "demand",
         },
         NaiveForecast(index, demand=1000),
@@ -122,7 +125,10 @@ async def init():
             "min_power": 200,
             "max_power": 1000,
             "bidding_strategies": {"energy": "support", "financial_support": "support"},
-            "bidding_params": {"contract_fraction": 1, "contract_types": ["CFD"]},  # Feed-In-Tariff
+            "bidding_params": {
+                "contract_fraction": 1,
+                "contract_types": ["CFD"],
+            },  # Feed-In-Tariff
             "technology": "nuclear",
         },
         nuclear_forecast,