⚡ Quick Answer — Tamil Nadu Electricity Rate 2026
TANGEDCO/TNPDCL domestic (LT-1A) tariff is bi-monthly and telescopic. If your bi-monthly usage is 500 units or below, the first 200 units are free (effective 10 May 2026) and the next units cost ₹4.70–₹6.30/unit. If you exceed 500 units, only the first 100 units are free and rates climb steeply to ₹8.40–₹11.55/unit. Domestic bills are exempt from the 5% Electricity Tax.
Tamil Nadu TANGEDCO Bill Calculator 2026
Enter your units (kWh). Domestic bills are bi-monthly — enter your total for the 2-month cycle. The calculator auto-applies the 200-free-unit scheme when your total is 500 units or below, and shows a full slab-wise breakdown.
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TANGEDCO/TNPDCL Tariff 2026 — All Tamil Nadu districts
Your Bill Breakdown
Slab-wise charge summary with all components
Bill Breakdown Charts
TANGEDCO / TNPDCL — Tamil Nadu's Power Distribution Utility
Unlike some states with multiple DISCOMs, Tamil Nadu is served by a single state-wide utility. In a 2024 restructuring, TANGEDCO's distribution business was legally renamed TNPDCL (Tamil Nadu Power Distribution Corporation Limited) — generation moved to TNPGCL, renewables to TNGECL, and transmission stayed with TANTRANSCO. Most bills and consumers still say "TANGEDCO" or "TNEB".
TNPDCL — Distribution
Bills, meters and consumer service across all 38 districts. Same tariff applies from Chennai to Kanyakumari — TNERC regulates rates statewide, not city by city.
Chennai Metro Distribution Circle
Covers Chennai city and suburbs — the highest-density consumer base in the state, with dedicated call centres and EB offices in every zone.
Coimbatore, Madurai, Trichy, Tirunelveli
Major regional circles administer billing and faults for Western, Southern and Central Tamil Nadu, each with its own Superintending Engineer office.
Tamil Nadu Electricity Tariff 2026 — TANGEDCO Domestic & Commercial
Rates per TNERC Tariff Order No. 6 of 2024 (effective 1 July 2024), updated with the Tamil Nadu CM's 200-free-units announcement effective 10 May 2026. Domestic billing is bi-monthly (every 2 months) and telescopic.
🏠 Domestic (LT-1A) — Bi-Monthly Consumption 500 Units or Below
| Units / Bi-Month (kWh) | Rate (₹/unit) | Notes |
|---|---|---|
| 1 – 200 units | ₹0 (Free) | May 2026 scheme — doubled from 100 units |
| 201 – 400 units | ₹4.70/unit | Charges begin from the 201st unit |
| 401 – 500 units | ₹6.30/unit | Approaching the 500-unit threshold |
🏠 Domestic (LT-1A) — Bi-Monthly Consumption Above 500 Units
| Units / Bi-Month (kWh) | Rate (₹/unit) |
|---|---|
| 1 – 100 units | ₹0 (Free) |
| 101 – 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 |
📋 Additional Charges
| Charge | Rate | Notes |
|---|---|---|
| Fixed Charge (Domestic) | ₹30–₹45 / 2 months | Based on connected load (up to 1kW); +₹30/extra kW above |
| FSA / Fuel Surcharge Adjustment | ≈ ₹0.20/unit | Variable, revised quarterly by TNERC based on fuel costs |
| Electricity Tax (Domestic) | Exempt (0%) | LT-1A domestic connections are tax-exempt |
| Meter Rent | Not separately charged | Unlike some states, TN does not levy a distinct meter-rent line item |
🏢 Commercial (LT-II) Rates — 2026
| Units / Month | Rate (₹/unit) |
|---|---|
| 0 – 500 units | ≈ ₹8.80/unit |
| Above 500 units | ≈ ₹12.15/unit |
Commercial: billed monthly (not bi-monthly), no free-unit subsidy, 5% Electricity Tax applies on energy charges, fixed charge based on sanctioned load (approximate — verify on your bill).
How to Calculate Your Tamil Nadu Electricity Bill
The exact method TANGEDCO/TNPDCL uses to compute your bi-monthly bijli bill, explained with each charge component.
Read Your Meter
Note total units (kWh) consumed over the 2-month billing cycle. TN domestic bills are bi-monthly, not monthly.
Check Which Tier Applies
If your bi-monthly total is ≤500 units, the first 200 units are free. If it exceeds 500 units, only the first 100 units are free and higher slabs apply to everything.
Apply Slab Rates (Telescopic)
Within your applicable tier, each unit range is charged at that slab's own rate — e.g. 201–400u at ₹4.70, 401–500u at ₹6.30, and so on.
Add FSA
FSA (Fuel Surcharge Adjustment) ≈ ₹0.20 × total units. Revised quarterly by TNERC to pass through fuel cost changes.
Add Fixed Charge
Fixed Charge ₹30–₹45 per 2 months based on connected load, regardless of consumption. No separate meter rent in TN.
Total Bill
Total = Energy + FSA + Fixed Charge. Domestic bills skip Electricity Tax entirely. Compare with your TANGEDCO bill to verify accuracy.
Tamil Nadu Electricity Bill Examples 2026
Estimated bi-monthly bills at common consumption levels using the TANGEDCO domestic tariff. Divide by 2 for an average monthly figure.
Advantages & Disadvantages of Tamil Nadu's Electricity Tariff System
✅ Advantages
- 200 free bi-monthly units (May 2026 scheme) means many small households pay ₹0 in energy charges — among the most generous domestic subsidies in India.
- Domestic connections are fully exempt from the 5% Electricity Tax, unlike commercial and industrial categories.
- No separate meter rent line item, simplifying the bill compared to several other states.
- Bi-monthly billing means fewer bills to track per year (6 instead of 12).
- Structured slabs make it easy to audit your TANGEDCO bill — all charges are itemised.
- Net metering available for solar rooftop users, and Tamil Nadu has some of India's best solar irradiance.
⚠ Disadvantages
- Crossing 500 bi-monthly units triggers telescopic re-pricing of the entire bill, not just the extra units — causing a sharp, disproportionate jump.
- Bi-monthly billing means a bigger single payment every 2 months, which can strain household budgets versus monthly billing.
- Top slab (₹11.55/unit above 1000 units) is among the steepest domestic rates in South India.
- FSA is revised quarterly with limited advance notice, causing unpredictable bill increases.
- The two-tier free-unit system (200 vs 100) can confuse consumers who don't track their exact bi-monthly total.
- Commercial tariffs pay from the very first unit with no free-unit cushion at all.
12 Proven Ways to Reduce Your Tamil Nadu Electricity Bill
Stay At or Below 500 Units
The single biggest lever in TN: track your bi-monthly meter reading and keep total usage at or under 500 units to stay on the generous 200-free-unit tier.
Set AC at 24–26°C
Every 1°C higher saves ~6% power. In Tamil Nadu's heat, 24–26°C with a ceiling fan feels as comfortable as 20°C and can cut cooling bills 30%+.
5-Star Inverter Appliances
5-star ACs and refrigerators use 25–30% less power than 2-star models — a meaningful difference given TN's long cooling season.
Switch All Bulbs to LED
LEDs use 8–10W vs 40–60W for incandescent. Replacing 10 bulbs can save 300–400 units/year — enough to stay under a slab threshold.
Rooftop Solar
Tamil Nadu gets 5.5+ kWh/m²/day of solar radiation, among India's best. A 3kW system generates ~300 units/month — enough to offset most household use.
Cross-Ventilate Rooms
Open opposing windows for natural cross-ventilation, especially in coastal districts. Can cool rooms 3–5°C and cut AC dependence.
Shift Heavy Loads Off-Peak
Run washing machines, pumps and geysers outside 6–10 AM and 6–10 PM peak windows to ease household load and simultaneous draw.
Eliminate Phantom Loads
TVs, set-top boxes and chargers left plugged in waste 50–100 units/year. Use switchable power strips for easy shut-off.
Solar Water Heater
Replace electric geysers with solar water heaters — TN's sunny climate makes payback fast, typically 3–4 years.
Track Your Bi-Monthly Usage
Since TN bills every 2 months, a small daily habit of noting meter readings helps you project your total before it crosses 500 units.
Maintain Refrigerator Coils
Clean coils every 6 months and avoid overloading. A well-maintained fridge saves 15–20% on its own consumption.
Use the TNPDCL/TANGEDCO App
Check consumption data via tnebnet.org or the mobile app to monitor usage trends and catch spikes early.
Tamil Nadu vs Other States — Electricity Bill Comparison 2026
See how your Tamil Nadu bill (converted to a monthly-equivalent) stacks up against Karnataka, Kerala, Andhra Pradesh, Telangana and Maharashtra at the same monthly consumption level.
Live State-by-State Bill Comparison
Adjust monthly units — all 6 states update instantly
| State | Starting Rate | Top Slab Rate | Fixed Charge | Note |
|---|---|---|---|---|
| 🌴 Tamil Nadu | ₹0 (200u free) | ₹11.55 (>1000u/2mo) | ₹30–45/2mo | Bi-monthly, telescopic |
| 🌉 Karnataka | ₹4.15/unit | ₹7.10 (>200u) | ₹100/mo | Monthly, BESCOM |
| 🌴 Kerala | ₹3.15/unit | ₹8.30 (>500u) | ₹40–250/mo | Monthly, KSEB |
| 🎭 Andhra Pradesh | ₹1.90/unit | ₹9.60 (>300u) | ₹10–100/mo | Very low entry slab |
| 💠 Telangana | ₹1.45/unit | ₹10.00 (>400u) | ₹10–100/mo | Similar to AP |
| 🌊 Maharashtra | ₹3.72/unit | ₹11.00 (>500u) | ₹100/mo | High fixed charge |
Tamil Nadu Electricity Bill — Answered in Seconds
| Consumption | Rate |
|---|---|
| 1–100 units | Free |
| 101–400 units | ₹4.70 |
| 401–500 units | ₹6.30 |
| Above 1000 units | ₹11.55 |
200u × ₹4.70 = ₹940
Energy = ₹940
FSA = ₹80 | Tax = ₹0
Fixed Charge = ₹45
Total ≈ ₹1,065 / 2 months
FSA = Fuel Surcharge Adjustment. Indicative rate ≈ ₹0.20/unit. Added on all units consumed. Passes through TANGEDCO's variable fuel and power-purchase costs. Revised quarterly by TNERC. On 400 units: FSA = ₹80.
Domestic (LT-1A) connections are fully exempt from the 5% Electricity Tax. Commercial, industrial and educational categories pay 5% on energy charges only — not on fixed charges or FSA.
Tamil Nadu Electricity Consumer Rights & Complaint Process
Step 1: Contact TANGEDCO/TNPDCL
24×7 helpline: 1912. SMS/WhatsApp: 94987 94987. Must respond within stipulated timelines under TNERC norms.
Step 2: CGRF
File with the Consumer Grievance Redressal Forum (CGRF), mandated under the Electricity Act 2003, if the helpline doesn't resolve your issue.
Step 3: TNERC Ombudsman
Escalate unresolved cases to the Electricity Ombudsman appointed by TNERC. Can order bill corrections, refunds and penalties.
Solar Rooftop & Net Metering in Tamil Nadu 2026
Tamil Nadu receives 5.5+ kWh/m²/day of solar radiation — among the best in India. Net metering can meaningfully reduce your bijli bill, especially if it helps you stay under the 500-unit threshold.
How Net Metering Works in Tamil Nadu
Surplus solar units exported to the TNPDCL grid are credited to your bill. Your bi-monthly bill = Grid consumption − export credit. Domestic consumers can typically install systems up to 10 kW under the state's rooftop solar policy. Apply through TANGEDCO/TNPDCL's online portal — approval typically takes 30–60 days. The PM Surya Ghar scheme offers a subsidy of up to ₹78,000 for systems up to 3 kW.
Tamil Nadu Electricity Tariff History
Note: figures for years before the 2024 order are approximate milestones based on publicly reported TNERC revisions; refer to tangedco.gov.in for archived tariff orders with exact historical slab rates.
Smart Meters in Tamil Nadu 2026
What is a Smart Meter?
Records consumption digitally and can transmit readings remotely, removing the need for manual meter-reading visits. The same TNERC tariff slabs apply — smart metering changes how usage is measured, not the tariff itself.
📍 TN Smart Meter Rollout
TNPDCL is deploying smart meters in Chennai and major urban centres under the central Revamped Distribution Sector Scheme (RDSS). Rural rollout is expected in phases. Check tnebnet.org for your area's status.
Benefits for Consumers
- No estimated billing — only actual usage charged
- Better visibility into which tier (≤500 vs >500) you're tracking toward
- Instant consumption data via app
- Eliminates meter-reading visits
Tamil Nadu Electricity Facts That Affect Your Bill
Electricity Bill Calculators for All Indian States
Important Note
This calculator provides an estimated bill based on TNERC Tariff Order No. 6 of 2024 and the 200-free-units scheme effective 10 May 2026. Actual bills from TANGEDCO/TNPDCL may differ slightly due to billing cycle rounding, quarterly FSA revisions, arrears, or special notifications. Commercial and industrial fixed charges shown are approximate — sanctioned load determines the exact figure.
For billing disputes or exact charges, contact TANGEDCO/TNPDCL: tangedco.gov.in or the consumer portal tnebnet.org.
Tamil Nadu Electricity Bill — 30 Most Asked Questions 2026
Everything TN consumers ask about bijli bills, TANGEDCO/TNPDCL, the 200-free-units scheme, tariff slabs, and how to reduce costs — answered comprehensively.
தமிழ்நாடு மின்சார கட்டண கணக்கீடு ⚡ 2026
தமிழ்நாடு மின்சார கட்டண விவரங்கள் 2026 (TNERC ஆணையின்படி)
| யூனிட் வரம்பு (2 மாதம்) | விலை (₹/யூனிட்) |
|---|---|
| 1 – 200 யூனிட் (≤500 திட்டம்) | இலவசம் |
| 201 – 400 யூனிட் | ₹4.70 |
| 401 – 500 யூனிட் | ₹6.30 |
| 500-க்கு மேல் (தொலைநோக்கு உயர் விகிதம்) | ₹8.40 – ₹11.55 |
மொத்த கணக்கீடு:
மொத்த பில் = ஆற்றல் கட்டணம் (படி வாரியாக) + FSA (₹0.20 × யூனிட்) + நிலை கட்டணம் (₹30–₹45). வீட்டு உபயோகிப்பாளர்களுக்கு மின் வரி இல்லை. 400 யூனிட் → ₹940 ஆற்றல் + ₹80 FSA + ₹45 நிலை கட்டணம் = மொத்தம் ≈ ₹1,065 (2 மாதங்களுக்கு)
About This Calculator — Accuracy & Data Sources
This Tamil Nadu electricity bill calculator is maintained by electricbillcalculate.in. Tariff data is sourced from the Tamil Nadu Electricity Regulatory Commission (TNERC) Tariff Order No. 6 of 2024 and the Government of Tamil Nadu's May 2026 announcement extending the free-units subsidy to 200 units for consumers using 500 bi-monthly units or below.
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