Update app.py

app.py

@@ -1,81 +1,79 @@
 import streamlit as st
 
 # Title of the app
-st.title("Solar Energy Calculator")
+st.title("Complete Solar Energy Calculator")
 
 # Input Section: User inputs for energy usage, costs, etc.
-st.header("Input your energy usage and system parameters:")
+st.header("Enter your energy usage and system parameters:")
 
 # Average Monthly Usage in kWh
 monthly_usage = st.number_input("Enter your average monthly energy usage (kWh):", min_value=0.0)
 
-# Peak Demand
+# Peak Demand in kW
 peak_demand = st.number_input("Enter your peak demand (kW):", min_value=0.0)
 
 # Solar Panel Efficiency
 solar_panel_efficiency = st.number_input("Enter the efficiency of your solar panels (0 to 100):", min_value=0.0, max_value=100.0)
 
-# Cost of electricity per kWh (user input or fixed)
-cost_per_kwh = st.number_input("Enter the cost per kWh (in your local currency):", min_value=0.0)
+# Panel Output in Watts (W)
+panel_output_watts = st.number_input("Enter the solar panel output (in watts, W):", min_value=0)
 
-# Solar panel cost (in local currency per panel or total cost)
-solar_panel_cost = st.number_input("Enter the cost of installing solar panels (in your local currency):", min_value=0.0)
+# Inverter Cost (per inverter)
+inverter_cost = st.number_input("Enter the cost of the inverter (in your local currency):", min_value=0.0)
+
+# Cost per Solar Panel
+panel_cost = st.number_input("Enter the cost per solar panel (in your local currency):", min_value=0.0)
 
 # Average Sunlight Hours per Day
 sunlight_hours = st.number_input("Enter the average sunlight hours per day:", min_value=0.0)
 
-# Solar Panel Output
-solar_panel_output = st.number_input("Enter the solar panel output (in watts, W):", min_value=0)
-
-# Avoid ZeroDivisionError by checking input values
-if solar_panel_output > 0 and sunlight_hours > 0:
-    # Calculations
-
+# Calculations Section
+if panel_output_watts > 0 and sunlight_hours > 0:
     # Determine Annual Energy Consumption (in kWh)
     annual_energy_consumption = monthly_usage * 12
 
     # Calculate Daily Energy Requirement (in kWh)
     daily_energy_requirement = annual_energy_consumption / 365
 
-    # Solar Panel Output in kWh (daily)
-    solar_panel_output_kwh = (solar_panel_output / 1000) * sunlight_hours  # Convert from watts to kWh
+    # Solar Panel Output in kWh per day (considering the sunlight hours)
+    solar_panel_output_kwh = (panel_output_watts / 1000) * sunlight_hours  # Convert watts to kWh
 
-    # Calculate number of solar panels required to meet daily energy requirement
+    # Calculate the number of panels required
     num_panels_required = daily_energy_requirement / solar_panel_output_kwh
 
+    # Inverter Capacity (based on peak demand)
+    inverter_capacity = peak_demand * 1.2  # Inverter capacity should be around 1.2 times the peak demand for efficiency
+
     # Cost Calculations
-    total_solar_cost = num_panels_required * solar_panel_cost
+    total_solar_cost = num_panels_required * panel_cost
+    total_inverter_cost = inverter_cost
+
+    # Total Solar System Installation Cost
+    total_installation_cost = total_solar_cost + total_inverter_cost
 
-    # Payback Period (years)
-    annual_savings = annual_energy_consumption * cost_per_kwh
-    payback_period = total_solar_cost / annual_savings
+    # Payback Period Calculation
+    annual_savings = annual_energy_consumption * (cost_per_kwh := st.number_input("Enter the cost per kWh of electricity:", min_value=0.0))
+    payback_period = total_installation_cost / annual_savings if annual_savings > 0 else float('inf')
 
-    # Output Section: Display results
+    # Display Results
     st.header("Results:")
 
-    # Display annual energy consumption
     st.subheader(f"Annual Energy Consumption: {annual_energy_consumption:.2f} kWh")
-
-    # Display daily energy requirement
     st.subheader(f"Daily Energy Requirement: {daily_energy_requirement:.2f} kWh")
-
-    # Display solar panel output
     st.subheader(f"Solar Panel Output per day: {solar_panel_output_kwh:.2f} kWh")
-
-    # Display number of panels required
-    st.subheader(f"Number of Solar Panels Required: {num_panels_required:.2f} panels")
-
-    # Display total solar system cost
-    st.subheader(f"Total Solar Panel Installation Cost: {total_solar_cost:.2f} local currency")
-
-    # Display payback period
+    st.subheader(f"Number of Panels Required: {num_panels_required:.2f} panels")
+    st.subheader(f"Inverter Capacity Required: {inverter_capacity:.2f} kW")
+    st.subheader(f"Total Solar Panel Cost: {total_solar_cost:.2f} local currency")
+    st.subheader(f"Total Inverter Cost: {total_inverter_cost:.2f} local currency")
+    st.subheader(f"Total Installation Cost: {total_installation_cost:.2f} local currency")
     st.subheader(f"Payback Period: {payback_period:.2f} years")
+
 else:
     st.warning("Please ensure that both solar panel output and sunlight hours are greater than 0.")
 
 # Show tips for improving the app or using it effectively
 st.markdown("""
 - Make sure to input accurate data to get the most reliable results.
-- You can adjust the efficiency, cost, and solar panel output to simulate different scenarios.
-- The payback period assumes the energy savings are constant each year.
+- The inverter capacity is calculated based on your peak demand.
+- Payback period assumes that energy savings will remain constant each year.
 """)