diff --git a/assume/common/outputs.py b/assume/common/outputs.py
index f441b1cb..04ea6f40 100644
--- a/assume/common/outputs.py
+++ b/assume/common/outputs.py
@@ -4,6 +4,7 @@
 
 import logging
 import shutil
+import sys
 from collections import defaultdict
 from datetime import datetime
 from multiprocessing import Lock
@@ -94,6 +95,9 @@ def __init__(
         # construct all timeframe under which hourly values are written to excel and db
         self.start = start
         self.end = end
+        self.current_size_bytes = 0
+        self.max_size_mb = 300
+
         # initializes dfs for storing and writing asynchronous
         self.write_dfs: dict = defaultdict(list)
         self.locks = defaultdict(lambda: Lock())
@@ -210,30 +214,38 @@ def handle_output_message(self, content: dict, meta: MetaDict):
             content (dict): The content of the message.
             meta (MetaDict): The metadata associated with the message.
         """
+        content_data = content.get("data")
 
         if content.get("type") == "store_order_book":
-            self.write_market_orders(content.get("data"), content.get("market_id"))
+            self.write_market_orders(content_data, content.get("market_id"))
 
         elif content.get("type") == "store_market_results":
-            self.write_market_results(content.get("data"))
+            self.write_market_results(content_data)
 
         elif content.get("type") == "store_units":
-            self.write_units_definition(content.get("data"))
+            self.write_units_definition(content_data)
 
         elif content.get("type") == "market_dispatch":
-            self.write_market_dispatch(content.get("data"))
+            self.write_market_dispatch(content_data)
 
         elif content.get("type") == "unit_dispatch":
-            self.write_unit_dispatch(content.get("data"))
+            self.write_unit_dispatch(content_data)
 
         elif content.get("type") == "rl_learning_params":
-            self.write_rl_params(content.get("data"))
+            self.write_rl_params(content_data)
 
         elif content.get("type") == "grid_topology":
-            self.store_grid(content.get("data"), content.get("market_id"))
+            self.store_grid(content_data, content.get("market_id"))
 
         elif content.get("type") == "store_flows":
-            self.write_flows(content.get("data"))
+            self.write_flows(content_data)
+
+        # # keep track of the memory usage of the data
+        self.current_size_bytes += self.calculate_content_size(content_data)
+        # if the current size is larger than self.max_size_mb, store the data
+        if self.current_size_bytes > self.max_size_mb * 1024 * 1024:
+            logger.debug("storing output data due to size limit")
+            self.context.schedule_instant_task(coroutine=self.store_dfs())
 
     def write_rl_params(self, rl_params: dict):
         """
@@ -311,6 +323,8 @@ async def store_dfs(self):
 
                 self.write_dfs[table] = []
 
+        self.current_size_bytes = 0
+
     def store_grid(
         self,
         grid: dict[str, pd.DataFrame],
@@ -614,3 +628,14 @@ def write_flows(self, data: dict[tuple[datetime, str], float]):
 
         with self.locks["flows"]:
             self.write_dfs["flows"].append(df)
+
+    def calculate_content_size(self, content):
+        if isinstance(content, dict):  # For dictionaries
+            return sys.getsizeof(content) + sum(
+                sys.getsizeof(value) for value in content.values()
+            )
+        elif isinstance(content, list):  # For lists, including lists of dicts
+            return sys.getsizeof(content) + sum(
+                self.calculate_content_size(item) for item in content
+            )
+        return sys.getsizeof(content)