diff --git a/etl/customers/stonewater/Wave 3 Preparation.py b/etl/customers/stonewater/Wave 3 Preparation.py
index c6736ba8..14e50460 100644
--- a/etl/customers/stonewater/Wave 3 Preparation.py	
+++ b/etl/customers/stonewater/Wave 3 Preparation.py	
@@ -121,20 +121,25 @@ def extract_retrofit_assessment_folder(retrofit_folder_path):
     """
     Handles extraction from a retrofit assessment folder if it exists and has content.
     """
-    retrofit_files = os.listdir(retrofit_folder_path)
+    retrofit_files = [f for f in os.listdir(retrofit_folder_path) if f.endswith(".pdf")]
 
-    # Find the summary report in the retrofit folder
-    summary_report = next(
-        (name for name in retrofit_files if "summary" in name.lower() and name.endswith(".pdf")), None
-    )
+    for pdf_file in retrofit_files:
+        pdf_path = os.path.join(retrofit_folder_path, pdf_file)
 
-    if summary_report:
-        pdf_path = os.path.join(retrofit_folder_path, summary_report)
-        return extract_summary_report(pdf_path)
+        # Attempt to read the first page of the PDF to determine the report type
+        with open(pdf_path, "rb") as file:
+            reader = PyPDF2.PdfReader(file)
+            first_page_text = reader.pages[0].extract_text() if reader.pages else ""
 
-    raise Exception("Not Implemented")
+            if is_energy_report(first_page_text):
+                # Treat this as an Energy Report
+                return extract_epr(pdf_path)
+            elif "summary" in pdf_file.lower():
+                # Treat this as a Summary Report
+                return extract_summary_report(pdf_path)
 
-    return None  # If no relevant PDF is found
+    # If no relevant PDF is found, raise an exception
+    raise FileNotFoundError("No valid report (EPR or Summary) found in the retrofit assessment folder.")
 
 
 def is_energy_report(text):