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| import streamlit as st | |
| # Title of the app | |
| st.title("Complete Solar Energy Calculator") | |
| # Input Section: User inputs for energy usage, costs, etc. | |
| st.header("Enter your energy usage and system parameters:") | |
| # Currency selection | |
| currency = st.selectbox("Select your currency:", ["USD", "EUR", "INR", "GBP", "AUD", "CAD", "JPY", "PKR", "Other"]) | |
| # Average Monthly Usage in kWh | |
| monthly_usage = st.number_input("Enter your average monthly energy usage (kWh):", min_value=0.0) | |
| # 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) | |
| # Panel Output in Watts (W) | |
| panel_output_watts = st.number_input("Enter the solar panel output (in watts, W):", min_value=0) | |
| # Average Sunlight Hours per Day | |
| sunlight_hours = st.number_input("Enter the average sunlight hours per day:", min_value=0.0) | |
| # Inverter Cost (user input) | |
| inverter_cost = st.number_input(f"Enter the cost of the inverter (in {currency}):", min_value=0.0) | |
| # Cost per Solar Panel | |
| panel_cost = st.number_input(f"Enter the cost per solar panel (in {currency}):", min_value=0.0) | |
| # Calculate Inverter Capacity based on Peak Demand (will be done once peak demand is entered) | |
| if peak_demand > 0: | |
| inverter_capacity = peak_demand * 1.2 # Inverter capacity should be around 1.2 times the peak demand for efficiency | |
| st.write(f"Recommended Inverter Capacity: {inverter_capacity:.2f} kW (1.2 times peak demand)") | |
| # Button to trigger the calculations | |
| calculate_button = st.button("Calculate Solar Energy System") | |
| if calculate_button: | |
| # Perform calculations when the button is clicked | |
| 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 per day (considering the sunlight hours) | |
| solar_panel_output_kwh = (panel_output_watts / 1000) * sunlight_hours # Convert watts to kWh | |
| # Calculate the number of panels required | |
| num_panels_required = daily_energy_requirement / solar_panel_output_kwh | |
| # Cost Calculations | |
| 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 Calculation | |
| cost_per_kwh = st.number_input(f"Enter the cost per kWh of electricity (in {currency}):", min_value=0.0) | |
| annual_savings = annual_energy_consumption * cost_per_kwh | |
| payback_period = total_installation_cost / annual_savings if annual_savings > 0 else float('inf') | |
| # Display Results | |
| st.header("Results:") | |
| st.subheader(f"Annual Energy Consumption: {annual_energy_consumption:.2f} kWh") | |
| st.subheader(f"Daily Energy Requirement: {daily_energy_requirement:.2f} kWh") | |
| st.subheader(f"Solar Panel Output per day: {solar_panel_output_kwh:.2f} kWh") | |
| 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} {currency}") | |
| st.subheader(f"Total Inverter Cost: {total_inverter_cost:.2f} {currency}") | |
| st.subheader(f"Total Installation Cost: {total_installation_cost:.2f} {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. | |
| - The inverter capacity is calculated based on your peak demand. | |
| - Payback period assumes that energy savings will remain constant each year. | |
| """) | |