diff --git a/config.json b/config.json
index cdedf6a..8860435 100644
--- a/config.json
+++ b/config.json
@@ -43,5 +43,11 @@
         "cost": "Costs of Microgrid system [m-EUR]",
         "benefit": "Financial Profit Based on Py & Ess Configuration (k-EUR / year)",
         "roi": "ROI"
+    },
+    "data_path": {
+        "pv_yield": "read_data/Serbia.csv",
+        "demand": "read_data/factory_power1.csv",
+        "sell": "read_data/electricity_price_data_sell.csv",
+        "buy": "read_data/electricity_price_data.csv"
     }
 }
\ No newline at end of file
diff --git a/main.exe b/main.exe
deleted file mode 100644
index 9e8581c..0000000
Binary files a/main.exe and /dev/null differ
diff --git a/read_data.py b/read_data.py
index bbd4f20..cec7650 100644
--- a/read_data.py
+++ b/read_data.py
@@ -1,17 +1,25 @@
 import pandas as pd
 import numpy as np
 import csv
+import json
 
-pv_yield_file_name = 'read_data/Serbia.csv'
+with open('config.json', 'r') as f:
+    js_data = json.load(f)
+
+pv_yield_file_name = js_data["data_path"]["pv_yield"]
+print(pv_yield_file_name)
 # factory_demand_file_name = 'factory_power1.xlsx'
-factory_demand_file_name = 'read_data/factory_power1.csv'
-electricity_price_data = 'read_data/electricity_price_data.csv'
-electricity_price_data_sell = 'read_data/electricity_price_data_sell.csv'
+factory_demand_file_name = js_data["data_path"]["demand"]
+print(factory_demand_file_name)
+electricity_price_data = js_data["data_path"]["buy"]
+print(electricity_price_data)
+electricity_price_data_sell = js_data["data_path"]["sell"]
+print(electricity_price_data_sell)
 
 pv_df = pd.read_csv(pv_yield_file_name, index_col='Time', usecols=['Time', 'PV yield[kW/kWp]'])
 pv_df.index = pd.to_datetime(pv_df.index)
 
-df_power = pd.read_csv('factory_power1.csv', index_col='Time', usecols=['Time', 'FactoryPower'])
+df_power = pd.read_csv(factory_demand_file_name, index_col='Time', usecols=['Time', 'FactoryPower'])
 df_power.index = pd.to_datetime(df_power.index)
 df_combined = pv_df.join(df_power)