domestic electrical bill calculation

4. TARiFFs
Prepared by:
Rajabunesha Binti Anwar Din

5. Apply the concept and principles of electrical safety and regulation in
performing electrical wiring according to MS IEC 60364 (C3, PLO1)
3.4.1 Explain the tariff demands.
3.4.2 Explain calculation of tariff.
3.4.3 Explain the domestic tariff used in Malaysia.
3.4.4 Explain the MS IEC 60364 and Electricity Regulations 1994 rules and
regulations that correspond to the tariff.
Learning Outcomes
CLO 1

6. CHAP 3 WIRING SYSTEM 3.4 TARIFFS
TARiFF Demand
3.4.1 TARIFF DEMANDS
“Charges that comprised
(incorporate) of standard
electricity supply and usage
charges, as well as an additional
fee called a ‘demand’ or ‘capacity’
charge”.
Electricity tariff is determined by the Government
The amount of money frame
by the supplier for the supply
of electrical energy to various
types of consumers.

7. Single
Rate
Flat Rate
Tariff
Block
Rate
Tariff
Two Part
Tariff
Maximum
Demand
Tariff
Power
Factor
Tariff
Three
Part
Tariff
CHAP 3 WIRING SYSTEM 3.4 TARIFFS
TYPES
of
TARiFF
3.4.1 TARIFF DEMANDS

8. CHAP 3 WIRING SYSTEM 3.4 TARIFFS
TARiFF in Malaysia
3.4.4 STANDARD /
REGULATION
Ministry of Energy and Natural Resources (KeTSA) through Suruhanjaya
Tenaga (ST) regulates your electricity tariff under a framework called
Incentive Base Regulation (IBR) to ensure that consumer enjoy reliable
and secure supply of electricity at a reasonable price.
TNB will allow to reflect changes (either increase or reduce) in fuel and
other generation-related costs in the electricity tariff every 6 months.
This review is to reflect up-to-date changes in cost of generating
electricity. This is mainly due to the changes in global fuel prices that
fluctuate regularly.
https://www.st.gov.my/en/web/consumer/details/6/25

9. CHAP 3 WIRING SYSTEM 3.4 TARIFFS
Main
Components
of The IBR
3.4.4 STANDARD /
REGULATION
Determination of the regulatory period to ensure the tariff revision is
carried out periodically and consistently;
Determination of the regulated and non-regulated business for the
utility and the separation of accounts;
Determination of financial performance and technical efficiency
targets of the utility;
Implementation of the imbalance cost pass-through mechanism to
enable the recovery of actual fuel-related and other generation
specific costs; and
Implementation of efficiency sharing mechanism to provide the utility a
continuous and sustained incentive to pursue cost efficiencies in every
regulatory period.

10. CHAP 3 WIRING SYSTEM 3.4 TARIFFS
3.4.4 STANDARD /
REGULATION
GUIDELINES ON ELECTRICITY TARIFF
DETERMINATION UNDER
INCENTIVE BASED REGULATION (IBR)
FOR
PENINSULAR MALAYSIA 2022
Established pursuant to
Section 26 and 50C of Act 447
https://www.st.gov.my/en/web/download/listing/150

11. CHAP 3 WIRING SYSTEM 3.4 TARIFFS
ELECTRICITY
TARiFF
CLASSIFICATION
3.4.4 STANDARD /
REGULATION
https://www.tnb.com.my/residential/pricing-tariffs
Domestic
Commercial
Industrial
Mining
Street lighting
Specific Agriculture

12. CHAP 3 WIRING SYSTEM 3.4 TARIFFS
TARiFF A - Domestic
3.4.3 DOMESTIC
TARIFF
Tariff A – Domestic Tariff
(kWh)
Current Rate
(RM)
For the first 200kWh (1-200kWh) per month 0.218
For the next 100kWh (201-300kWh) per month 0.334
For the next 300kWh (301-600kWh) per month 0.516
For the next 300kWh (601-900kWh) per month 0.546
For the next kWh (901kWh onwards ) per month 0.571
Minimum monthly charge is RM3.00
Pricing & Tariffs - Tenaga Nasional Berhad (tnb.com.my)

13. CHAP 3 WIRING SYSTEM 3.4 TARIFFS
CALCULATION of TARiFF
3.4.2 CALCULATION of
TARIFF
Multiply by
kWh rate
Divide by 1000
Multiply the
device’s
wattage by the
number of
hours the
appliance is
used per day

14. CHAP 3 WIRING SYSTEM 3.4 TARIFFS
3.4.2 CALCULATION of
TARIFF
https://www.tnb.com.my/residential/billing/
Understand Your Bill

15. CHAP 3 WIRING SYSTEM 3.4 TARIFFS
Understand Your Bill
3.4.2 CALCULATION of
TARIFF
Account Number / Deposit / Contract
Number / Invoice Number
Info / Bill Payment Status
Customer Details
Current Billing Amount & Payment
Previous Billing Amount & Payment
Type of Meter Reading
Billing Period
Current Billing Details
1
2
3
4
5
6
7
8

16. CHAP 3 WIRING SYSTEM 3.4 TARIFFS
Understand Your Bill
3.4.2 CALCULATION of
TARIFF
Current Billing Charges
Meter Reading
9
10

17. CHAP 3 WIRING SYSTEM 3.4 TARIFFS
ExAMPLe:
CALCULATION of TARiFF
3.4.2 CALCULATION of
TARIFF
Tariff A
Domestic Tariff
(kWh)
Current Rate
(RM)
Block Used
Total Rate
(RM)
For the first 200kWh
(1-200kWh) per month
0.218 200 0.218 x 200 = 43.60
(For the next 100kWh
(201-300kWh) per month
0.334 100 0.334 x 100 = 33.40
For the next 300kWh
(301-600kWh) per month
0.516 300 0.516 x 300 = 154.80
For the next 300kWh
(601-900kWh) per month
0.546 130 0.546 x 130 = 70.98
Total Tariff Rate (RM) 730 302.78

18. CHAP 3 WIRING SYSTEM 3.4 TARIFFS
ExaMPLe: Actual Bill
3.4.2 CALCULATION of
TARIFF

19. BILL
DURING PKP

20. EXCERSICE I
A household used 580 unit of electricity in a month of
Jan 2023. Calculate the domestic tariff based on the
provider block rate as stated below:
5
min
SOLUTION
Tariff A – Domestic Tariff
(kWh)
Current Rate
(RM)
For the first 200kWh (1-200kWh) per month 0.218
For the next 100kWh (201-300kWh) per month 0.334
For the next 300kWh (301-600kWh) per month 0.516
For the next 300kWh (601-900kWh) per month 0.546
For the next kWh (901kWh onwards ) per month 0.571
Minimum monthly charge is RM3.00

21. SOLUTION
Tariff A
Domestic Tariff
(kWh)
Current Rate
(RM)
Block Used
Total Rate
(RM)
For the first 200kWh
(1-200kWh) per month
0.218
(For the next 100kWh
(201-300kWh) per month
0.334
For the next 300kWh
(301-600kWh) per month
0.516
For the next 300kWh
(601-900kWh) per month
0.546
Total Tariff Rate (RM)
200
100
280
-
0.218 x 200 = 43.60
0.334 x 100 = 33.40
0.516 x 200 = 144.48
580 221.48
-

22. EXCERSICE II
A household used electricity of 6,059 unit in previous
month and 6,449 unit current month. Calculate the
domestic tariff based on the provider block rate as
stated below:
5
min
SOLUTION
Tariff A – Domestic Tariff
(kWh)
Current Rate
(RM)
For the first 200kWh (1-200kWh) per month 0.218
For the next 100kWh (201-300kWh) per month 0.334
For the next 300kWh (301-600kWh) per month 0.516
For the next 300kWh (601-900kWh) per month 0.546
For the next kWh (901kWh onwards ) per month 0.571
Minimum monthly charge is RM3.00

23. SOLUTION
Tariff A
Domestic Tariff
(kWh)
Current Rate
(RM)
Block Used
Total Rate
(RM)
For the first 200kWh
(1-200kWh) per month
0.218
(For the next 100kWh
(201-300kWh) per month
0.334
For the next 300kWh
(301-600kWh) per month
0.516
For the next 300kWh
(601-900kWh) per month
0.546
Total Tariff Rate (RM)

24. 3.4.1 Explain the tariff demands.
3.4.2 Explain calculation of tariff.
3.4.3 Explain the domestic tariff used in Malaysia.
3.4.4 Explain the MS IEC 60364 and Electricity Regulations 1994 rules
and regulations that correspond to the tariff.
Learning Outcomes
CLO 1

25. Thank You