TNEB Commercial Bill Calculator 2026 – Calculate Your Shop & Business EB Bill Instantly

Running a business in Tamil Nadu? Calculating commercial electricity bills can be tricky because it involves varying slabs, load-based monthly fixed charges, and a 5% electricity tax. To make it quick and error-free, use our free TNEB Commercial Bill Calculator. We keep it updated with the latest TANGEDCO/TNERC tariff orders so you get the exact breakdown of your shop, warehouse, or factory EB bill instantly.

TNEB Commercial Calculator 2026

TANGEDCO (TNEB) Commercial & Industrial Bill Calculator 2026-27

Bill Calculation Report

What is the TNEB Commercial Bill Calculator 2026?

The TNEB Commercial Bill Calculator is a free online tool designed specifically for commercial and industrial electricity connections (LT-V and HT categories) in Tamil Nadu. Unlike domestic billing, commercial rates do not have telescopic step subsidies and are subject to mandatory demand charges based on sanctioned load. This tool automates the math, showing you your energy charge, load fees, electricity tax, and final payable amount instantly.

How TANGEDCO Commercial & Industrial EB Bills are Calculated

To calculate a commercial electricity bill, TANGEDCO combines three distinct components. Understanding these parts helps you monitor and manage your business expenses better:

Billing Component How It Works Rate / Rule
1. Energy Charges Based on actual units consumed during the bimonthly cycle. ₹6.65/unit (≤ 100 units) or ₹10.45/unit (Flat if > 100 units).
2. Fixed Demand Charges Calculated per month based on your sanctioned load (kW). ≤50 kW: ₹110/kW/month | 50-112 kW: ₹332/kW/month.
3. Electricity Tax A mandatory government levy added on active energy charges. 5% of Energy Charges.

Step-by-Step Commercial Billing Examples

Here are two bimonthly billing examples for a commercial shop (LT-V) with a sanctioned load of 3 kW:

Example 1: 95 Units Used
100 Units or Less
Since your total consumption remains under 100 units, the lower energy rate applies.
  • Energy (95 units × ₹6.65)
    ₹631.75
  • Fixed Charges (3kW × ₹110 × 2 mo)
    ₹660.00
  • Electricity Tax (5% of Energy)
    ₹31.59
  • Total Payable Bill
    ₹1,323.34
Example 2: 300 Units Used
Above 100 Units
Crossing 100 units triggers the flat rate of ₹10.45 per unit for all consumed units.
  • Energy (300 units × ₹10.45)
    ₹3,135.00
  • Fixed Charges (3kW × ₹110 × 2 mo)
    ₹660.00
  • Electricity Tax (5% of Energy)
    ₹156.75
  • Total Payable Bill
    ₹3,951.75

How to Use the TNEB Commercial Calculator

Computing your commercial power charges is quick. Simply follow these steps:

1

Select Business Category

Choose your connection type (e.g. LT Commercial, Cottage Industry, or HT Industrial).

2

Enter Sanctioned Load

Input your connection sanctioned load in kW (check your TNEB card or registration letter).

3

Enter Consumed Units

Type in the total units consumed during the billing cycle from your meter display.

4

Click Calculate

Hit the “Calculate My Bill” button to view a detailed breakdown of charges and taxes.

5 Smart Energy Habits to Reduce Your Business EB Bill

Higher electricity costs directly impact your business profit margins. Implement these habits to optimize your power use and save money:

✓

Optimize Shop Display & Signboard TimersInstall automated digital timers for display spotlights and outdoor signboards to turn them off automatically after business hours.

✓

Upgrade to Inverter AC UnitsStandard AC units draw maximum current on start-up. Inverter ACs run continuously at lower speeds, saving up to 30-40% on commercial power.

✓

Maintain Power Factor (for HT & Large LT connections)Ensure your capacitor banks are healthy. A low power factor triggers reactive power penalties on your TNEB commercial bill.

✓

Schedule Heavy Loads during Off-Peak HoursIf you run machinery or heavy laundry, shift operations to off-peak periods (night hours) if your tariff supports Time-of-Day (ToD) slots.

✓

Install Rooftop Solar Net MeteringCommercial solar installations qualify for heavy subsidies and offset expensive commercial units, providing an ROI in 3-4 years.

Frequently Asked Questions (FAQ)

Here are quick answers to the most common queries regarding commercial electricity connections in Tamil Nadu:

1. Is there any free electricity units subsidy for commercial shops?

No. The bimonthly 100/200 free units subsidy scheme in Tamil Nadu is strictly limited to domestic households, handlooms, and agricultural connections. Commercial shops pay full tariff rates.

2. What happens if my bimonthly shop usage crosses 100 units?

If your usage is 100 units or less, you are billed at ₹6.65/unit. If it crosses 100 units (even by 1 unit), you are billed at a flat rate of ₹10.45/unit for ALL units consumed in that cycle.

3. How is the 5% electricity tax calculated?

The 5% government tax is applied directly to the sum of your bimonthly energy consumption charges. Fixed charges are tax-free under current TN state guidelines.

4. What are fixed charges for commercial LT-V connections?

Fixed charges are billed monthly based on sanctioned load: ₹110/kW/month for loads up to 50 kW, and ₹332/kW/month for loads between 50 and 112 kW.

Last Updated: July 2026, as per TNERC Tariff Order CPI revisions and TANGEDCO commercial service guidelines.

Disclaimer: This calculator provides an estimate. For official billing, please consult your physical bill statement or log in to the TANGEDCO consumer portal.