💡 900 Units Electricity Bill in Tamil Nadu (two months)
TANGEDCO (Tamil Nadu Generation and Distribution Corporation) - current slab rates, 2026
Bill for 900 units every two months
₹5,820
Average ₹6.47 per unit; your last units cost ₹10.50 each.
How the 900-unit bill adds up
| Slab (units per two months) | Units | Rate | Charge |
|---|---|---|---|
| 1-100 | 100 | Free | ₹0 |
| 101-400 | 300 | ₹4.70 | ₹1,410 |
| 401-500 | 100 | ₹6.30 | ₹630 |
| 501-600 | 100 | ₹8.40 | ₹840 |
| 601-800 | 200 | ₹9.45 | ₹1,890 |
| 801-1000 | 100 | ₹10.50 | ₹1,050 |
| Fixed charge | ₹0 | ||
| Total (before electricity duty) | ₹5,820 | ||
Source: TNERC Order No. 4 of 2026 dated 27 Apr 2026 (Provisional Tariff Subsidy, FY 2026-27, LT-IA payable rates) with Order No. 5 of 2026 dated 26 May 2026 (200 free units). Last verified 2026-11-08. Estimate only; check your latest TNEB bill.
What a little more or less would cost
| Units per two months | Bill | Avg. per unit |
|---|---|---|
| 800 units | ₹4,770 | ₹5.96 |
| 850 units | ₹5,295 | ₹6.23 |
| 900 units (this page) | ₹5,820 | ₹6.47 |
| 950 units | ₹6,345 | ₹6.68 |
| 1000 units | ₹6,870 | ₹6.87 |
Cutting back to 800 units would bring the bill down to ₹4,770, saving ₹1,050 every two months. Above 1000 units the next slab starts and each extra unit costs more. Watch the 500-unit line: at 500 units the bill is ₹1,570, but at 501 units it becomes ₹2,048 because the extra free units stop.
Try your own units (Tamil Nadu, monthly)
TNEB / TNPDCL: TNERC Order No. 4 of 2026 dated 27 Apr 2026 (Provisional Tariff Subsidy, FY 2026-27, LT-IA payable rates) with Order No. 5 of 2026 dated 26 May 2026 (200 free units). Last verified 2026-11-08. Slabs are notified per two months; this calculator converts them to a monthly bill.
Homes using up to 500 units every two months get the first 200 units free; above 500 units, the first 100 units are free. The government subsidy is already included in the bills shown here.
Estimated Monthly Bill
₹3,056
450 units - Avg ₹6.79/unit
Bill breakdown
Monthly bill
₹3,056
Quarterly
₹9,168
Annual estimate
₹36,672
Tips to reduce your bill
- - Switch to 5-star BEE-rated appliances - they use 30-50% less electricity
- - Use LED bulbs (7W LED = 60W incandescent in brightness)
- - Set AC to 24-26 degrees C - each degree below 24 increases consumption ~6%
- - Avoid peak hours (6-10 PM) if your DISCOM has time-of-use tariffs
- - A 1kW solar rooftop panel generates ~100-120 units/month in India
Estimate for a domestic connection. Fuel adjustment charges, electricity duty and other state levies change often and vary by state, so your actual bill can differ. Check your DISCOM website or latest electricity bill for exact rates.
450 units a month: Tamil Nadu vs other states
| 🏙️ Delhi | ₹1,865 |
| 🔆 Gujarat | ₹2,005 |
| 🔌 Karnataka | ₹2,910 |
| 💡 Tamil Nadu | ₹2,910 |
| ⚡ Uttar Pradesh | ₹2,920 |
| ☀️ Rajasthan | ₹3,438 |
| ⚡ West Bengal | ₹3,585 |
| ⚡ Maharashtra | ₹5,661 |
Monthly bill for the same usage at each state's current domestic tariff, before electricity duty, fuel adjustment charges and any opt-in subsidy. 900 units every two months is about 450 units a month.
FAQs - 900 units electricity bill in Tamil Nadu
How much is the electricity bill for 900 units in Tamil Nadu?▾
Using 900 units every two months in Tamil Nadu costs about ₹5,820 at current TNEB rates, including the fixed charge but before electricity duty.
How is the 900-unit bill calculated?▾
Slabs are charged one band at a time: 100 units at Free = ₹0, 300 units at ₹4.70 = ₹1,410, 100 units at ₹6.30 = ₹630, 100 units at ₹8.40 = ₹840, 200 units at ₹9.45 = ₹1,890, 100 units at ₹10.50 = ₹1,050. Then the fixed charge of ₹0 is added, for a total of ₹5,820.
What is the per unit cost at 900 units in Tamil Nadu?▾
At 900 units the average works out to ₹6.47 per unit including the fixed charge, while your last units are charged at ₹10.50 per unit. The average rises as usage moves into higher slabs.
How much more does it cost to use 50 more units?▾
Going from 900 to 950 units raises the bill from ₹5,820 to ₹6,345, an extra ₹525.
What happens if I use more than 500 units every two months?▾
Homes using up to 500 units every two months get the first 200 units free; above 500 units, the first 100 units are free. The government subsidy is already included in the bills shown here. At exactly 500 units the bill is ₹1,570; at 501 units it jumps to ₹2,048, so staying at or under 500 units saves ₹478.
Which charges are not included in this 900-unit bill?▾
Electricity duty and state taxes are not included, and neither are fuel or power purchase adjustment charges that change every quarter. Your actual bill can be somewhat higher than the figure shown here.
Is a 900-unit bill cheaper in other states?▾
For the same 450 units a month, the bill ranges from ₹1,865 in Delhi to ₹5,661 in Maharashtra across the states we cover, because each state sets its own slabs, fixed charges and subsidies.