1. What is MDI in Electricity Bill?

Definition: MDI (Maximum Demand Indicator) represents the peak power demand recorded during a billing period, measured in kVA.

Purpose: It helps electricity providers determine the appropriate tariff and infrastructure requirements for consumers.

2. How Does the MDI Calculator Work?

The calculator uses the formula:

Where:

• \( \text{MDI} \) — Maximum Demand Indicator (kVA)
• \( \text{Max\_load} \) — Maximum load recorded (kW)
• \( \text{Factor} \) — Conversion factor (typically 1.2 for most utilities)

Explanation: The maximum load is multiplied by a factor to account for power factor and other electrical characteristics.

3. Importance of MDI Calculation

Details: Accurate MDI calculation ensures proper billing, helps in capacity planning, and avoids penalties for exceeding contracted demand.

4. Using the Calculator

Tips: Enter the maximum load in kW and the conversion factor (default 1.2). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical factor value?
A: Most utilities use 1.2 as the standard factor, but this may vary by provider and region.

Q2: How is max load determined?
A: Max load is typically the highest 15-30 minute average power demand recorded during the billing period.

Q3: Why convert kW to kVA?
A: kVA accounts for both real power (kW) and reactive power (kVAR), representing the total apparent power.

Q4: How does MDI affect my electricity bill?
A: Many tariffs include demand charges based on MDI, which can significantly impact commercial/industrial bills.

Q5: Can I reduce my MDI?
A: Yes, through load shifting, power factor correction, and demand management strategies.