update variable name

config.py

@@ -3,21 +3,24 @@ class pv_config:
     def __init__(self, capacity, cost_per_kW, pv_lifetime, pv_loss):
         self.capacity = capacity
         self.cost_per_kW = cost_per_kW
-        self.pv_lifetime = pv_lifetime
-        self.pv_loss = pv_loss
+        self.lifetime = pv_lifetime
+        self.loss = pv_loss
 class ess_config:
     def __init__(self, capacity, cost_per_kW, ess_lifetime, ess_loss, charge_power, discharge_power):
         self.capacity = capacity
         self.cost_per_kW = cost_per_kW
-        self.ess_lifetime = ess_lifetime
-        self.ess_loss = ess_loss
-        self.ess_storage = 0
+        self.lifetime = ess_lifetime
+        self.loss = ess_loss
+        self.storage = 0
         self.charge_power = charge_power
         self.discharge_power = discharge_power
 
 class grid_config:
-    def __init__(self, price_schedule, grid_loss):
+    def __init__(self, capacity, price_schedule, grid_loss, sell_price):
         self.price_schedule = price_schedule
+        self.grid_loss = grid_loss
+        self.sell_price = sell_price
+        self.capacity = capacity
     
     def get_price_for_time(self, time):
         hour, minute = map(int, time.split(':'))