Calculate your TNEB electricity bill instantly (2025 Rates)

Understanding your electricity bill calculation helps you monitor consumption patterns and reduce monthly costs. Our TNEB calculator uses the latest government-approved tariff structure to provide 99.9% accurate bill estimates in under 2 seconds.
Step 1: Check Your Meter Reading
Note your current meter reading and subtract your previous month’s reading to determine total units consumed during the bi-monthly billing cycle.
Step 2: Enter Units in Calculator
Input your consumption units (kWh) into the calculator above. The tool automatically applies the correct slab rates based on your usage.
Step 3: Get Instant Bill Breakdown
Receive a detailed breakdown showing energy charges, fixed charges (₹20 for domestic), electricity duty (15%), and your total payable amount.
The Tamil Nadu Electricity Board implements progressive slab-based pricing to encourage energy conservation. Understanding these rates helps you estimate bills accurately and identify opportunities to reduce consumption.
Domestic Tariff Slabs (Bi-Monthly Billing):
0-100 Units: ₹0.00/unit (Free – Government subsidy)
101-200 Units: ₹2.35/unit
201-300 Units: ₹4.70/unit
301-400 Units: ₹4.70/unit
401-500 Units: ₹6.30/unit
501-600 Units: ₹8.40/unit
601-800 Units: ₹9.45/unit
801-1000 Units: ₹10.50/unit
Above 1000 Units: ₹11.55/unit
*Rates effective from April 2025 as per TNERC Order *
Your complete TNEB bill includes multiple charges beyond basic energy consumption:
Energy Charges: Calculated by multiplying units consumed in each slab by the applicable rate.
Fixed Charges: ₹20 per bi-monthly cycle for domestic connections (varies by connection type).
Electricity Duty: 15% of total energy charges, with a minimum of ₹15.
Additional Components: Some connections may include meter rent, demand charges, or power factor surcharges.
Instant Accurate Estimates
Calculate your expected bill in under 2 seconds instead of waiting for your monthly TNEB statement. Plan your electricity budget and avoid billing surprises.
Complete Transparency
View detailed slab-wise breakdowns showing exactly how much you’re paying for each consumption tier. Understand where your money goes and identify high-consumption patterns.
Latest 2025 Rates
Our calculator automatically updates with official TNERC tariff revisions, ensuring 100% accuracy with government-approved rates.
Free & Unlimited Use
No registration required – calculate bills unlimited times from any device. Share results via WhatsApp or save for your records.
Monitor Peak Hour Usage
Shift heavy appliance usage (washing machines, water heaters) to off-peak hours when possible to reduce strain on the grid.
Consider Solar Energy Solutions
Installing rooftop solar panels can eliminate 70-100% of your electricity bills through net metering. Explore Solar Scheein’s residential solar solutions to start saving today.
Upgrade to Energy-Efficient Appliances
Replace old ACs, refrigerators, and lights with 5-star rated appliances to reduce consumption by 30-40%.
Track Consumption Monthly
Use our EB calculator regularly to monitor usage trends and catch unusual spikes early.
Our calculator provides 99.9% accurate estimates using official TNERC 2025 tariff rates. It includes all charges – energy costs, fixed charges, electricity duty, and applicable taxes.
Domestic rates start at ₹0.00/unit for 0-100 units (free), then ₹2.35/unit for 101-200 units, increasing progressively to ₹11.55/unit for consumption above 1000 units
Electricity duty is 15% of your total energy charges, with a minimum charge of ₹15 per billing cycle.
This calculator is optimized for domestic connections. Commercial, industrial, and high-tension connections have different tariff structures.
Minor differences may occur due to previous arrears, late payment charges, power factor penalties, or temporary tariff adjustments.
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