CS306 Assignment 1 Solution Fall 2026

The EcoWatt Smart Grid Auditor assignment requires developing a Python program to manage household electricity billing and audit reporting. Students must implement two modules that handle customer registration, daily tariff calculations based on specific consumption slabs, and cumulative billing adjustments. The program must utilize loops, conditional logic, and various arithmetic and assignment operators to process data over a user-defined audit period. The final output is a comprehensive audit report and an automated inspection schedule.

1. 1

   Module 1: Customer Onboarding, Daily Tariff Engine & Multi-Day Audit Loop

   20 marks

   Define a parameterless function display_system_banner() and a function calculate_daily_tariff(units, is_peak_day) that applies slab-based pricing and a 10% peak-demand surcharge using multiplication assignment. Implement a main program that collects customer details and uses a for loop to iterate through the audit duration. Inside the loop, track total units, gross bill, and overload days using addition assignment operators while printing daily summaries.

2. 2

   Module 2: Final Bill Calculation, Summary Report & Inspection Schedule

   20 marks

   Define compute_net_invoice(gross_cost, total_units, overload_days, has_solar) to apply a maintenance fee via floor division, a quadratic overload penalty using exponentiation, a green rebate using logical operators, and a 5% sales tax. Calculate average daily usage, 50-kWh blocks using floor division, and remainder units using the modulus operator. Finally, print the full audit report and use a step-based for loop to display bi-daily inspection dates.

What to submit

One .py file submitted in a .Zip or .RAR archive.

Topics covered

Python functions For loops If-else conditions Arithmetic operators Assignment operators Logical operators Floor division and modulus