Calculator

TNEB Bill Calculator, Per Unit Rate 2024-25, Domestic & Commercial

Updated:

As per the latest revision from the TN government which increased the price by 4.75% for the domestic consumer. We have re-structed our calculator with the latest per unit rate.

TNEB Bill Calculator:

Enter the total unit consumed in Units or kWh. Then press the calculate button to see the result of total electricity consumption. Our TNEB bill Calculator works based on the new tariff declared by TN Government for the financial year 2024-25.

Enter the Number of Months and Demanded Load for all other Non Domestic Consumers. Domestic consumer just enter the electricity consumption.

Choose Unit of:
TNEB Unit Consumption:		kWh
Connected Load:		kW
Total Month:		Month

Result – Total Energy Charges:		INR
Result – Fixed Charges Amount:		INR
Result – Electricity Duty Amount:		INR
Result – Total Bill Amount:		INR

What is Tariff:

The way of charging your electricity bill based on the consumption with different charges is called a tariff. i.e you have consumed 600 units means, you get different prices for each step of unit levels. You get small money for low units up to 100 and small amount hike with another level up to 200 units and again small hike for 500 units levels.

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TNEB Electrical tariff Rate 2024-25:

As per the latest Provisional Tariff subsidy for FY 2024-25 by the Government of Tamil Nadu, TNEB domestic tariff is splitted by two such as the rate for one unit varies between the consumption less than 500 units and above 500 units.

Note: The per unit rate for the single phase and three phase are same.

Less Than 500 Units:

If the consumer’s consumption is less than 500 units means, they has to pay zero charges for the first 100 units, ₹2.35 for the next 100 unit such as consumption between 101 to 200, ₹4.7 for the units between 200 to 400 and ₹6.3 per unit for the consumption between 400 to 500 units.

	Power Range	Per unit(₹)
>500 units	0-100	0.00
	101-200	2.35
	201-400	4.7
	401-500	6.3

More than 500 Units:

In case, if the consumer consumes more than 500 units (even if one unit extra) then they shall pay ₹0 for the first 100 units, ₹4.7 per unit for next 300 units such as 101 to 400. ₹6.3 for the next 100 units between 401 to 500, ₹8.4 per unit between 501 to 600, ₹9.45 per unit for the 601 to 800 units, ₹10.5 for the next 801 to 1000 units. ₹ 11.55 per unit for the consumption for the all remaining units.

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Above 500 Units	0-100
	101-400	4.7
	401-500	6.3
	501-600	8.4
	601-800	9.45
	801-1000	10.5
	>1000	11.55

Hence the over TNEB rate per unit can be tabled as below.

TNEB Per Unit Rate For Domestic House
	Power Range	Per unit(₹)
Less than 500 Units	0-100	0.00
	101-200	2.35
	201-400	4.7
	401-500	6.3
Above 500 Units	0-100	0.00
	101-400	4.7
	401-500	6.3
	501-600	8.4
	601-800	9.45
	801-1000	10.5
	>1000	11.55

TNEB Electricity Bill Calculation Domestic:

Let us calculate the electricity bill for 263 units. For (0-100) units amount is 0 (100*0), for next 101 to 200 units the bill is 235 (2.35*100), next 63 units the charges is 296.1(4.7 *63 ) INR.

Here our total bill amount is Rs 531.1

TNEB Bill Calculation – 263 Units
Scheme	Tariff Range	Per unit(₹)	Units	Bill
Domestic	0-100		100
	101-200	2.35	100	235
	201-400	4.7	63	296.1
			Total	531.1

Calculation for Unit Consumption above 500 Units:

Example:

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Let take an example, you have consumed 1846 units.

Look at the calculation the consumer shall pay ₹ 16641.3/- as electricity bill.

TNEB Bill Calculation – 1846 Units
Scheme	Tariff Range	Per unit(₹)	Units	Bill
Domestic	0-100		100
	101-400	4.7	300	1410
	401-500	6.3	100	630
	501-600	8.4	100	840
	601-800	9.45	200	1890
	801-1000	10.5	200	2100
	>1000	11.55	846	9771.3
			Total	16641.3

If you absorb the above all tariff pattern, the different charges are applied for the same unit’s consumption.

Look at the screenshot from the official site.

LT Commercial Tariff:

Commercial consumer shall pay by two slaps such as less than 50kWh and above 50kWh. For consumption of less than 50kWh, the consumer shall pay ₹ 6 per unit and if the consumer reaches, more than 50 unit means, they fall in to the slap tariff based on their connected load.

For first 50kW, the consumer shall pay 100 per kW per Month, for next 50 to 112kW, the consumer shall pay 300kW/kW/Month and for more than 112kW, you have to pay ₹ 550 per kW/Month.

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LT Commercial
Type	Range	Per Unit	Fixed Charges
LT – V	0-50kWh	6	100/kW/Month
	0-50 kW	9.5	100/kW/Month
	50kW-112kW		300/kW/month
	>112kW		550/kW/month

Huts Tariff:

TNEB bills ₹300 per service as fixed charges for the huts, small house, and single blub house. There is no slap rate for the huts consumer.

Huts
Type	Range	Per Unit	Fixed Charges
LT – IB	All		300/Service/month

Bulk supply with single point metering:

Consumer for the Bulk supply with single point metering will be charged ₹8 per unit along with the 100 per month as fixed charges.

Bulk supply with single point metering
Type	Range	Per Unit	Fixed Charges
LT – IC	All	8	100 Per Month

Common facilities in Multi-tenements & Public Lighting, Water supply provided by Govt./Local bodies

For Common facilities in Multi-tenements & Public Lighting, Water supply provided by Govt./Local bodies, they shall pay ₹ 8 for one unit and 100 per kW per month as fixed charges.

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Here the fixed charges will be calculated based on the demand.

Common facilities in Multi-tenements
Type	Range		Per Unit		Fixed Charges
LT-ID	All		8		100/kW/Month
Public Lighting, Water supply provided by Govt./Local bodies
Type		Range		Per Unit		Fixed Charges
LT – IIA		All		8		100/kW/Month

Government Educational Institutions its Hostel, Govt. Hospital, Other hospitals rendering totally free service:

Government Educational Institutions its Hostel, Govt. Hospital, Other hospitals rendering totally free service
Type	Range	Per Unit	Fixed Charges
LT – IIB (1)	0-50 kW	8	100/kW/Month
	50kW-112kW		325/kW/month
	>112kW		550/kW/month

Private Educational Institutions/Hostel, Segregated Private Medical college

Private Educational Institutions/Hostel, Segregated Private Medical college
Type	Range	Per Unit	Fixed Charges
LT – IIB (2)	0-50 kW	8.5	100/kW/Month
	50kW-112kW		325/kW/month
	>112kW		550/kW/month

Actual places of Public worship:

Actual places of Public worship
Type	Range	Per Unit	Fixed Charges
LT – IIC	0-60	5.75	100/kW/Month
LT – IIC	>60 kWh	7	100/kW/Month

Cottage & Micro Industries

Cottage & Micro Industries
Type	Range	Per Unit	Fixed Charges
LT – IIIA (1)	0-250	4.5	70/kW/Month
LT – IIIA (1)	>250	6.5	70/kW/Month

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Power Looms

Power Looms
Type	Range	Per Unit	Fixed Charges
LT – IIIA (2)	0-250	6.5	100/kW/Month
LT – IIIA (2)	>250	7.5	100/kW/Month

Industries, Information Technology services:

Industries, Information Technology services
Type	Range	Per Unit	Fixed Charges
LT – IIIB	0-50 kW	7.5	75/kW/Month
	50kW-112kW		150/kW/month
	>112kW		550/kW/month

Agriculture and allied activities:

Agriculture and allied activities
Type	Range	Per Unit	Fixed Charges
LT – IV	All		3550/HP/Annum

Miscellaneous/General purpose:

Miscellaneous/General purpose
Type	Range	Per Unit	Fixed Charges
LT – VI	All	12	550/kW/Month

HT Tariff:

The categories of supply are as specified in the Tamil Nadu Electricity Distribution Code and Tamil Nadu Electricity Supply Code. The HT tariff specified for different categories of HT consumers are also applicable to the consumers who are supplied at EHT level in accordance with above said Codes.

In case of supply under HT Tariff I, II (A), II(B), III the use of electricity for residential quarters, within the premises, shall be metered separately by the Licensee at single point of supply, if opted by the consumer and only the energy so consumed shall be charged under LT Tariff IC. Such metered consumption shall be deducted from the total consumption registered in the main meter of the HT/EHT supply for billing.

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Industries, Factories, Information Technology Services

Industries, Factories, Information Technology Services
Type	Range	Per Unit	Fixed Charges
HT – I	All	6.75	550/kVA/month

Government Educational Institutions/Hospitals, Railway Traction, CMRL, Lift Irrigation societies, etc.

Government Educational Institutions/Hospitals, Railway Traction, CMRL, Lift Irrigation societies, etc.
Type	Range	Per Unit	Fixed Charges
HT – IIA	All	7	550/kVA/month

Private Educational Institutions & its hostels, segregated Medical colleges:

Private Educational Institutions & its hostels, segregated Medical colleges
Type	Range	Per Unit	Fixed Charges
HT – IIB	All	7.5	550/kVA/month

HT Commercial:

Commercial
Type	Range		Per Unit		Fixed Charges
HT – III	All		8.5		550/kVA/month
Construction activities and other temporary purposes
Type		Range		Per Unit		Fixed Charges
HT – IV		All		12		550/kVA/month

Note: Above TNEB Bill calculator is only applicable for domestic service and for industrial, commercial, School, public services etc, the per-unit cost will be varied. Also, those consumer needs to pay MD charges as extra.

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Reference: TNEB Latest Tariff order