Tenaga Nasional Berhad Electricity System
1.1.0 TENAGA NASIONAL BERHAD ELECTRICITY SYSTEM
1.1.1 Introduction
The Tenaga Nasional Berhad (TNB), a public listed company registered under Companies Act 1965, is charged with the following responsibilities:
- To generate, transmit, distribute and sell energy to consumer throughout Peninsular Malaysia.
- To plan, install, operate and maintain electricity installation for the generation, transmission and distribution of electricity.
To achieve the above objectives, the company owns and operate power plants and the National Grid and installed for this purpose are consumer service centres, call management centres, substations and administrative offices throughout Peninsular Malaysia. TNB’s core activities are in generation, transmission and distribution of electricity which are being handled by four divisions:
- Generation Division
- Transmission Division
- Distribution Network Division
- Retail Division
1.1.2 Distribution Network Division and Retail Division
Distribution Network Division and Retail Division supply electricity in strict accordance with the provisions of the TNB Licence, Electricity Supply Act 1990, the Licensee Supply
Regulations 1990 and the Electricity Regulations 1994 (and all amendments thereto).
Distribution Network Division is responsible for the upstream network operations which involves planning, designing, constructing, operating and maintaining the system that delivers electricity supply to the customers. Retail Division is responsible for the downstream retail operations conducted through a network of 14 states which involves marketing and selling electricity, connection of new supply, providing counter services through Retail Outlets (Kedai Tenaga), collecting revenues, operating Call Management Centres (TNB Careline 15454), handling customer enquiries or complaints and nurturing strong customer and government relationship.
Kedai Tenaga provides functions pertaining to Application for Electricity Supply, Billing & Collection, Upgrading of Services and other consumer related activities. Besides Kedai Tenaga, consumer can also opt for online services through myTNB Portal.
1.1.3 Kedai Tenaga
Kedai Tenaga is TNB’s Service and Advisory Centre which are located throughout Peninsular Malaysia. Complete information on Kedai Tenaga throughout Peninsular Malaysia can be obtained via TNB website. This list is subject to changes and may be reviewed from time to time.
Services provided at Kedai Tenaga include:
a) One stop payment counter for all electricity bills.
- Payment can be made by cash, cheque, credit card or debit card.
- You can also make arrangements to have your electricity bills paid through banks or ATM cards.
- TNB, being a caring company, shall facilitate and make special arrangement on case to case basis for the payment of bills for elderly and handicapped consumers.
b) Electricity supply application
- At Kedai Tenaga, we offer you advice on all matters pertaining to your electricity supply application.
- For wiring purposes in your premise, you may choose from a varied selection of contractors from our directory of registered electrical contractors.
c) Inquiries pertaining to billing and other related services.
- Kedai Tenaga shall provide clarification on any billing inquiries and its related services to consumers.
- Appointments can be made to have the meter read in case the premises are locked during working hours.
- Testing of meters can be carried out if consumers suspect that the meter is faulty. A fee will be charge for such testing.
1.1.4 Electrical System
1.1.4.1 Voltages
The transmission voltage networks are 500kV, 275kV and 132kV, whilst the distribution voltages are 33kV, 11kV and 400/230 Volts. However, in the case of certain parts of Johor & Perak the distribution voltages may include 22kV and 6.6kV.
1.1.4.2 Supply Frequency
The supply frequency is 50Hz +/- 1%.
1.1.4.3 Power Factor
Consumers are required to maintain their load power factor to a minimum of 0.85 for voltage level less than 132kV and 0.90 for voltage level 132kV and above.
1.1.4.4 Earthing System
High Voltage and Extra High Voltage
- 3 phase configuration
- Solidly earthed
- Overhead lines and underground cable are used extensively for high and extra high voltage distribution
Medium Voltage
- 3 phase configuration
- Impedance-earth (NER)
- Overhead lines and underground cable are used extensively for medium voltage distribution
Low Voltage 400/230V
- 3 phase 4 wire system
- Neutral point solidly earthed mixture of overhead lines, underground cables and aerial insulated cables
- Mixture of overhead lines, underground cables and aerial insulated cables
1.1.4.5 Short Circuit Ratings
All equipment proposed to be installed and connected to TNB supply must comply with the following short circuit ratings:
System | Short Circuit Rating | ||
i. | 500kV |
50 kA, 1s |
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ii. |
275kV |
40 kA, 3s for bulk station (50kA , 1s for Power Substation and 275kV within 500kV substation). | |
iii. | 132kV |
31.5 kA, 3s (40kA, 3s for substation adjacent to Power Station, or within 500/275kV substation) |
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iv. | 33kV |
25 kA, 3s |
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v. | 22kV | 20 kA, 3s | |
vi. | 11kV | 20 kA, 3s | |
vii. | 6.6kV | 20 kA, 3s | |
viii. | 400/230 V | 31.5 kA, 3s |
1.1.4.6 Act, Regulation and Customer Charter
The electricity supply and installation practice in Peninsular Malaysia are governed by the following:-
1 |
Electricity Supply Act 1990 – Act 447 |
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2 |
Licensee Supply Regulations 1990 | |
3 |
Electricity Regulations 1994 |
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4 |
Customer Charter – refer to TNB website |
1.1.4.7 Supply Voltage Options
Supply may be provided at any of the declared voltages :-
275 kV, 132kV, 33kV, 22 kV*, 11kV, 6.6 kV* and 400/230V. Generally, supplies to domestic premises are given at single phase 2-wire or three phase 4-wire while for non domestic premises the supply are at three phase 3-wire or three phase 4-wire. However, the actual supply voltage provided depends on the individual applicant’s load requirements (refer to Connection Guideline clause 3.1 – Maximum Demand levels and supply scheme):-
It should be noted that voltages other than the above classifications is not provided by TNB. However, consumers can make their own transformation arrangements where necessary.
*System for certain parts of Johor and Perak only.
1.1.5 Types of Supply
1.1.5.1 Supply Application Based on Load
All new applications and upgrade of supply requirement can be classified into two (2) types of supply applications.
a) Supply Application For Load Up To 100 A
- Supply from existing supply mains or
- Establishment of new supply mains or
- Establishment of new substation/substations
- Submission of applications to TNB by Electrical Contractor registered with the Energy Commission
b) Supply Application For Load Exceeding 100 A
- Supply from existing supply mains or
- Establishment of new supply mains or
- Establishment of new substation/substations
- Submission of applications to TNB by Electrical Consultant Engineer registered with the Board of Engineers Malaysia
Note: Establishment of new supply system may require the construction of a new substation/substations and its related ancillaries.
1.1.5.2 Consumers Standby Supply
Standby generator(s) may be used by the applicant at their premises, subject to compliance with the relevant laws. The generators shall remain a separate system from TNB distribution system and the applicant shall declare to TNB on the safe installation of the generator(s).
This may be used in place of TNB’s supply source through a suitable, approved changeover facility. The Energy Commission and other relevant authorities govern the usage of generators and standby supply.
1.1.5.3 Alternative Source of Supply
A large consumer may require an alternative source of supply. TNB will provide such alternative supply at an additional cost fully borne by the consumer.
1.1.5.4 Provision Of Temporary Supply
Application for a Temporary Supply means the electricity supply required is for a nonpermanent installation intended for a limited time. When a consumer is requesting for a permanent supply, but a planned supply source is not available at that point of time and temporary connection from another source of supply is constructed, the case is not considered as a Temporary Supply.
Examples of Temporary Supply are, but not limited to, festivals or exhibition sites, circuses and construction sites (inclusive of the worker's quarters).
Tariff for Temporary Supply shall be determined based on the usage of the Temporary Supply premise. For example, Tariff A is for the worker's quarters on construction site, Tariff B, C1 or C2 for construction site, festivals, exhibitions or circuses. A surcharge of 33% of the total bill, shall be charged monthly through out the Temporary Supply term.
The consumer is responsible to construct the respective infrastructure and TNB shall charge the cost of connection and termination of cables. However in isolated cases where the consumer does not have the ability and resources to construct the infrastructure, TNB may provide such service and hence the Connection Charge shall be revised accordingly to include the overall cost of constructing and dismantling. The Connection Charge monies however shall be refunded based on the net book value amount of the returned installations after the Temporary Supply has been dismantled.
1.1.5.5 Single Tenant Premises
If the supply is for a single tenant only then the entire supply will be metered at the applicant’s incoming switchboard. The consumption will be charged at the appropriate tariff rates.
1.1.5.6 Multi Tenanted Premises
For multi-tenanted domestic and commercial premises, the owner / developer shall have the option of taking supply via bulk supply or individual supply to landlord and tenants respectively.
(a) If taking bulk supply, the owner / developer of the multi tenanted premises must obtain public distribution license (PDL) from Energy Commission. Copy of provisional public distribution licence (PDL) must be appended during submission for TNB’s technical comment on development plan and supply application. Copy of official public distribution license (PDL) must be submitted to TNB during Special Electricity Supply Agreement signatory stage before commencement of electrical infrastructure work.
(b) In the event of premature termination or expiration of PDL where TNB is required to take over the corresponding PDL supply area by Energy Commission, PDL holder is responsible to ensure connection schemes and meter locations of landlord / tenants are complying to TNB requirement, as described in the Connection Schemes of Multi Tenanted Premises with individual supply to landlord / tenants in Appendix 1. All cost incurred to be fully borne by PDL holder.
(c) If taking individual supply, the owner / developer is responsible to ensure connection schemes and meter locations of landlord / tenants are complying to TNB requirement, as described in the Connection Schemes of Multi Tenanted Premises with individual supply to landlord/tenants in Appendix 1.
The design, installation and operating of such electrical system shall comply with requirements of all the relevant authorities including the Energy Commission’s and TNB’s.
1.1.5.7 Turnkey Projects
In certain cases, the applicant may apply to undertake the planning and installation of the electrical systems (including overhead lines, switchgears, cables, according to TNB’s specifications and requirements) with the assistance of Electrical Consultant Engineer(s) and Electrical Contractor(s). Under the ‘turnkey’ concept the applicant will then hand over the entire electrical system to TNB. TNB shall have the absolute discretion in deciding whether the turnkey project to be carried out by the applicant.
1.1.6 Charges
1.1.6.1 Connection Charges
Please refer to the Statement of Connection Charges booklet available at TNB’s website. The booklet is subjected to change as may be published from time to time.
1.1.6.2 Tariff
Please refer to the Tariff booklet available at TNB’s website. Tariffs are subjected to change as may be published from time to time and approved by the Ministry of Energy, Science, Technology, Environment and Climate Change.
1.1.6.3 Request For Additional Requirement Or Special Features
The applicant shall bear the full cost for any request of additional requirements or special features made by the applicant and/or impose by Local Authority. Please refer to the Statement of Connection Charges booklet available at TNB’s website. The booklet is subject to change as may be published from time to time.
1.1.7 SERVICE LEVEL AGREEMENT (SLA)
1.1.7.1 SLA with Housing Developers
Offer is open to all housing developers to enter into a Service Level Agreement (SLA) with TNB when applying for electricity supply for housing development (as prescribed under the Housing Development (Control and Licensing) Act 1966). The scope of the SLA includes the time frame process for connection of supply and the duties and obligation by TNB and housing developers in ensuring the electricity supply is connected to the housing projects within the stipulated time to avoid delays in handing over houses to the purchaser.
XElectricty Supply Application For Load Up To 100A
1.2.0 ELECTRICITY SUPPLY APPLICATION FOR LOAD UP TO 100A
1.2.1 Purpose
The application for the supply of electricity with load up to 100A which is for a single (1) phase and three (3) phase low voltage system is outlined here.
1.2.1 What Is The Steps Involved To Get Your Electricity
The following steps are required to get the supply of electricity up to 100A for a single (1) phase and three (3) phase low voltage system.
Steps | Action | Reference |
1 |
Appointment of an Electrical Contractor Appoint an Electrical Contractor who will act on behalf and submit the electricity supply application through myTNB portal. For Move-In into existing premise (with no change in electricity load) or Change of Tenancy, the applicant shall skip Step 1. |
Visit our online application page myTNB |
2 |
Complete All Required Documents The Applicant or the appointed contractor complete the electricity application form and attach together the required documents. The applicant shall sign the application form with TNB. For online application, this step shall be done accordingly as explained by the guidelines available at the website. |
Visit TNB’s online application page at myTNB Appendix 2 – Required Documents Checklist |
3 |
Pay Essential Charges Required initial payments (i.e. Connection Charge, Security Deposit and Stamp Duty) related to the application can be paid at Kedai Tenaga or online through myTNB portal. |
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4 |
Get Electricity Supply TNB installs meter and connects the electricity supply once all the required payment is received. |
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1.2.3 TNB Supply Lead Time
TNB supply lead-time will be based on TNB’s Customer Charter as mention in TNB’s website.
1.2.4 Dispute Between Applicant And The Electrical Contractor
In the event of a dispute between the applicant and the Electrical Contractor and the applicant wishes to terminate the services of the Electrical Contractor, the applicant shall duly notify the Electrical Contractor concerned in writing with the copy extended to TNB. TNB shall not be a party to any dispute or litigation arising thereof.
XElectricty Supply Application For Load Exceeding 100A
1.3.0 ELECTRICITY SUPPLY APPLICATION FOR LOAD EXCEEDING 100A
1.3.1 Purpose
The application for the supply of electricity for load exceeding 100A is outlined here.
1.3.2 Application Process
The application process incorporates not only TNB requirements but taking into account the Government Development Plan Approval Process in Peninsular Malaysia issued by the Bahagian Perancangan Dasar & Pembangunan Kementerian Perumahan dan Kerajaan Tempatan.
The inclusion of the said Government procedure shall ensure:
- Infrastructure planning and approval process of the TNB complements the National Policy
- TNB as a member Agency of the Government Development Plan Committee has to ensure complete transparency of its process through timely responses to Development Plan Approval Process
- TNB Supply Application Process ensures complete agreement of Distribution Division’s plans and the Consultant Engineers submissions especially on the location and size of substations needed for the supply of electricity to the development area, and is valid for 2 years after the approval from the relevant Local Authority.
1.3.3 Application Parts
There are two parts to the application:
Part | Function | |
A |
Authorities Approval Process |
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B |
TNB Application Process (Technical & Financial Approval (After completion of Part A) |
PART A: Authorities Approval Process
The part A process approval that involves TNB’s technical comments is as shown in Development Plan Approval Process Flowchart in Appendix 3. At each application process, TNB requires a processing time of up to 14 days to complete the comments for the relevant Local Authority. The main process can be summarised as follows:
Stage | Description | |
1 |
Submission Development Plan The Developer / Owner / Consultant Engineer submit development plan application for the proposed development to Local Authority / One Stop Centre (OSC). All plans must be prepared by the party authorised by Local Authority. Applicant must adhere to the requirements stipulated in the Development Plan Checklist (checklist available in https://jkt.kpkt.gov.my) during the submission of Development Plan to Local Authority / One Stop Centre (OSC). The comments from all relevant technical agencies including TNB are required prior to approval by Local Authority / One Stop Centre. |
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2 |
TNB Register Application
The local authority / One Stop Centre submits application to TNB complete with
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3 |
Mutual Understanding Of Plan Both TNB and Consultant Engineer will conduct discussion to agree to technical requirement such as substation number, size, location, site and consumers main switch room, etc. In case of a dispute on TNB proposal, the Consultant Engineer shall refer to the relevant State General Managers. A discussion shall be arranged by the relevant State General Managers to arrive at an agreement. |
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4 |
TNB Submit Comments to Local Authority / One Stop Centre TNB submit to Local Authority / One Stop Centre the proposed development plans including all technical comments using TNB official stamp as required by Local Authority. Local Authority approves the proposed development plan. The validity is subjected to:
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5 | TNB Application for Electricity Supply above 100A process starts (Part B) |
PART B: TNB Application Process (Technical & Financial Approval)
Part B process is the TNB Application Process for Electricity Supply above 100 A as outlined in the table below. The process starts after the completion of Part A (Authorities Approval Process). The Process in Part B can be summarised as follows:
Stage | Description | |
1 |
Submit Application The Electrical Consultant Engineer (registered with Board of Engineers Malaysia) on behalf of the developer/consumer submits application for the Electricity Supply Application through myTNB portal and TNB Distribution Network Division Local Office. Complete details as in Appendix 4 must be submitted with the application.
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2 |
Documentation Check And System Study TNB will check on the documentation and carry out system studies and shall advise on the necessary amendments (if any) to the consultant by letter. The Electrical Consultant Engineer is to ensure that all the amendments are done and resubmitted to TNB. |
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3 |
Joint Meeting TNB will restudy the amendments and arrange for a joint meeting with the Electrical Consultant Engineer and Applicant for final acceptance of the technical requirements including substation details, cable/overhead line route, metering system requirements and meter location. Activities of both parties will be recorded in the Joint Meeting Action Log. TNB shall forward in writing the final proposal on the above agreed technical requirements to the Electrical Consultant/Applicant. Electrical Consultant on behalf of the Applicant shall in writing confirm acceptance of the final proposal to TNB. |
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4 |
Connection Charges TNB will issue a Notice of Connection Charges to the Electrical Consultant Engineer based on the accepted final proposal. The Electrical Consultant / Applicant shall make the payments for the Connection Charge. |
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5 |
Electricity Infrastructure Agreement (Optional) The applicant / TNB may decide to enter into an Electricity Infrastructure Agreement (mainly for large development) with regard to scope of work, charges, timely connection and their respective obligations. |
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6 |
Discussion And Preparation Of Site Work After payment of Connection Charges, the Electrical Consultant Engineer will arrange for pre start work discussion. |
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7 |
Construction Completion And Substation Energising The substation site and the construction of the substation building shall be completed (in accordance to TNB specification and requirement) and hand over to TNB. TNB will install the electrical equipment including its ancillaries and shall be responsible for the commissioning of substation. |
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8 |
Meter Application By The Electrical Contractor The Electrical Consultant Engineer shall advise the Electrical Contractor (Appointed by the Applicant) to submit meter application. |
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9 |
Get Electricity Supply The energising of supply by TNB will normally be done at the same time as the installation of the meters. For HV / MV supply, the supply shall be energised in the presence of the Electrical Testing Engineer and for LV consumers in the presence of the Electrical Contractor. |
1.3.4 What The Applicant Should Do
The Applicant should take the following action in applying for electricity supply application for load exceeding 100A.
Steps | Action | Reference | ||
1 |
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Appendix 5 – Sample of Appointment Letter of Electrical Consultant |
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2 |
After approval from Local Authority / One Stop Centre and TNB completion of work plan, the applicant settles Connection Charges to TNB at any Kedai Tenaga or through myTNB portal. The Applicant may decide to enter into an Electricity Infrastructure Agreement with TNB with regard to scope of work, charges, timely connection and their respective obligations. |
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3 |
- Transfer the substation land at a nominal value of RM10.00 to TNB or; - Leasing the substation land at a nominal value of RM10.00 to TNB.
The transfer of the land title should be finalised prior to the handing over of site. In the absence of the land title, the applicant is to prepare a Bank Guarantee for TNB for the period of twelve (12) months and shall be renewed until the land title is transferred to TNB or registration of lease to TNB. Delay in title transfer may affect project implementation. TNB have the right to use the substation to supply electricity to other consumers. |
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4 |
Get Electricity Supply TNB installs meter and connects the electricity supply once all the required payment is received. |
1.3.5 Supply Project Lead Time
The lead-time for supply connection depends on a number of factors including the type of premises, the electrical load required and the location of the premises and approval from the Local Authorities.
Applicants should submit their applications for supply as early as possible giving the necessary information of their requirements to the nearest Kedai Tenaga. They must also inform TNB of the progress of their project(s). The above measures are necessary to ensure that TNB’s supply projects are coordinated with the construction and wiring installation at the applicants’ premises, and thus avoid any delay in connection of supply. The typical supply project lead time required by TNB is as follows:
Voltage Level | Supply Project Typical Lead Time* | |
132 kV and above |
3 years – 5 years |
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33 kV |
18 months - 2 years | |
11 kV | 6 months – 12 months | |
400 V and below (with substation) |
3 months – 12 months | |
400 V and below (without substation) |
Less than 3 months |
*Provided there is no delay in the approval given by Local Authorities
However 132kV supply projects can be given within 24 months on a Fast Track basis on the following categories:
Fast Track 132kV Project | ||||
Category | Supply Project Lead Time | Terms & Conditions | ||
1 |
12 months |
a) PMU Site or Lines/Cables Right Of Way (ROW), Route Survey and Profile Plan To Be Made Available By The b) Length of Underground Cable: max. 5km c) Length of Transmission Line: max. 5km d) All Major Equipments Must Be Readily Available. |
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2 |
18 months |
a) Site or Lines/Cables ROW, Route Survey and Profile Plan To Be Made Available By The Customer & Notice To Enter (NTE) Issued By TNB Without Any Encumbrances. b) Length of Underground Cable: max. 5km c) Length of Transmission Line: max. 10km d) Equipments To Be Procured Based on Equipments that have Been Installed in TNB System. |
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3 |
24 months |
a) Site or Lines/Cables ROW, Route Survey and Profile Plan To Be Made Available By The Customer & Notice To Enter (NTE) Issued By TNB Without Any Encumbrances. b) Length of Underground Cable: max. 5km c) Length of Transmission Line: max. 20km d) Equipments To Be Procured Based on Equipments that Have Been Installed in TNB System. |
1.3.6 What The Electrical Consultant Engineer Should Do
The Electrical Consultant Engineer plays a major role to represent the Applicant and ensure compliance with other relevant government departments and TNB. The Electrical Consultant Engineer is advised to observe the steps as outlined below:
Steps | Action | ||
1 |
Liaise with TNB to come up with a mutual understanding of plan and to get approval by Local Authorities/ One Stop Centre. |
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2 |
Upon approval of the Development Order Plan, Electrical Consultant submits application for the electricity supply to Kedai Tenaga. Complete details as outlined in Appendix 4 and Appendix 6 (Summary of Load for Demand Exceeding 100kVA (~ 140A)) must be submitted with the application. The application must be accompanied by 3 copies of the following :- i) Latest Development Order Plan approved by Local Authority ii) Site plan showing the lot number (s) and proposed substation sites iii) Layout plan of substation building iv) Single line diagram / schematic of installation v) Layout plan of proposed consumer switchroom (where applicable) vi) The approval of the building plans by the relevant Authorities
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3 |
Ensure that all the amendments/additional requirements if required by TNB are complied with and resubmitted to TNB. |
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4 |
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5 |
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6 | Ensure that the wiring and the installation work of Applicant’s equipment shall be supervised by competent person(s). | ||
7 | Advise Applicant to submit application form through registered Electrical Contractor. The process is similar as outlined in Section 2. | ||
8 | Advise Applicant to deposit a sum of money equivalent to 2 months bill (as reviewed from time to time) upon receiving the notice of deposit. For deposit of more than RM2,000 the applicant are encourage to settle via Bank Guarantee. |
1.3.7 Dispute Between Applicant And Electrical Consultant Engineer
In the event of a dispute between the Applicant and the Electrical Consultant Engineer and the Applicant wishes to terminate the services of the Electrical Consultant Engineer, the Applicant shall duly notify the Electrical Consultant Engineer concerned in writing with the copy extended to TNB. TNB shall not be a party to any dispute or litigation arising thereof.
XApplication Process For Streetlight
1.4.0 APPLICATION PROCESS FOR STREETLIGHT
1.4.1 Purpose
This procedure outlines the process for the application for streetlight.
1.4.2 Types of Applications
The three (3) types of application for streetlights are:
- Application made by the Local Authority/Government Authority
- Application by Developer
- Application by Individual
1.4.3 Application by Developer
The Developer should take the following steps to apply for streetlight.
Steps | Action | |
1 |
Appoint a Consultant Engineer (Registered with the Board Of Engineers Malaysia) and an Electrical Contractor (registered with the Energy Commission). |
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2 |
The application is made together with the supply application for a new development with all the load details of the proposed public lighting that is approved by the Local Authority. | |
3 |
Electricity Contract Forms to be signed by Local Authority before TNB commissions the street light. |
1.4.4 Application By Individuals/Local Authority/Government Authority
The application process is similar for both Individuals and Local Authority or Government Authority. Individuals must already have an account with TNB. The installation of streetlight depends on:
- Installation of streetlight on existing TNB pole
- Installation involving additional poles
IF | THEN | |
Installation of streetlight on existing TNB pole |
Installation involving additional poles |
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Installation involving additional poles |
The applicant settles the full cost of additional new pole/poles installed. |