One of the core business of TNB is power generation which lead by TNB Power Generation Sdn Bhd, also known as TNB Genco, a wholly owned subsidiary of TNB since 1st October 2020.
TNB Power Generation Sdn Bhd (TNB Genco)
TNB Genco is responsible to spearhead TNB’s power generation role to provide secure, stable, reliable and sustainable power in contributing to the long-term energy needs of the country with E2E capabilities ranging from plant development, O&M to end-of-life management.
At present, TNB Genco owns nearly 51% of Malaysia’s power generation market share with a total contracted capacity of 13.76GW.
TNB Genco has thermal generation assets and major hydro schemes in Peninsular Malaysia and Maintenance and Operation Operator in Kuwait, Pakistan and Cambodia that offers cutting-edge innovation and demanding expertise in:
- Asset Management
- Operation & Maintenance Management (O&M)
- Maintenance, Repair and Overhaul (MRO)
- Test & Diagnostics
- Engineering, Procurement, Construction and Commissioning (EPCC)
Supply Of Electricity
Customers are connected with power from hydro and thermal plants through a network system made up of transmission lines, substations and distribution lines. It is via this reliable system that TNB supplies electricity to customers consistently and continuously, as well as ensuring a balance between demand and supply at all times.
Source: TNB Integrated Annual Report
Thermal Power Plant
TNB's Thermal Power Plant generate electricity by using coal and natural gas power plants. Coal Power Plants use steam turbine (primary mover) to generate electricity while Gas Power Plants use gas turbine and steam turbine (combined cycle) as primary mover to generate electricity.
Hydroelectric Power Plants
Hydroelectric Power generation is the utilization of energy from flowing water as it descends from a height, and potential energy is converted to electrical energy. A hydroelectric Power Station requires the means of conveying water to produce the necessary force to spin a turbine linked to an electric generator, usually through a conduit such as a pipeline or tunnel to a turbine-generator which is spun by the passing water. TNB’s Hydroelectric Power Stations are classified as Storage, Run-of-river or Pondage stations.
Safety, Health & Environment
TNB, through TNB Genco is dedicated towards new sustainable growth, operational excellence, business synergies and partnership to accelerate brown to green initiatives towards achieving Net Zero in 2050.
TNB Genco has adopted and practicing the World Class Occupational Safety & Health (OSH) policy with the implementation of the TNB Safety & Excellence Management System (SEMS). It has also attained some of the most prestigious industry awards as a proof of TNB Genco continuous commitment towards the sustainability and betterment of the nation.
- 2021 POWER’s Plant of the Year - Sultan Ibrahim Power Plant
- 2021 Asean Energy Award - Best Practices in Clean Coal Use and Technology Innovations: Tuanku Muhriz Power Station
In conformity with the Malaysian Grid Code, TNB’s Grid Division is aimed at providing a safe, reliable and economical operation of the grid system. The Division manages and operates the 132 kV, 275 kV and 500 kV transmission network of TNB known as the National Grid. Main activities of the Grid Division include strategy formulation, system planning, engineering, project management, control operations, maintenance, way leave management and more. The National Grid is interconnected to Thailand’s transmission system operated by Electricity Generating Authority of Thailand (EGAT) in the North via a HVDC interconnection with a transmission capacity of 300 MW and a 132 kV HVAC overhead line with maximum transmission capacity of 80 MW. The National Grid is also connected to Singapore’s transmission system at Senoko in the South via two 230 kV submarine cables with a firm transmission capacity of 200 MW.
Distribution Network division plans, constructs, operates, performs repairs & maintenance as well as manages the assets of the 33 kV, 22 kV, 11 kV, 6.6 kV and 415/240 volts in the Peninsula Malaysia’s distribution network.
Retail Division was formed in 2018 with the aim of delivering value to our customers, employees and shareholders. We are focused on delivering customer-centric experiences across all customer channels - Click, Call and Come Over via 13 state offices, 125 Kedai Tenaga and 7 CareLine offices nationwide. Our mandate also includes developing energy solutions that are beyond Energy services that deliver a smart energy lifestyle to targeted customers from large businesses to SMEs, from micro-businesses to residential customers.
To contact TNB CareLine:
- Dial 1 300 88 5454 (Mon-Fri, 8.00am-7.00pm; Weekends & Public Holidays 8.00am-5.00pm),
- Email [email protected],
- Facebook TNB Careline or Twitter @Tenaga_Nasional (24 hours)
- To report supply interruption or streetlight issues, dial 15454
For more detail: 2022 TNB Corporate Structure
|TNB Power Generation Sdn. Bhd.||
|TNB Retail Sdn. Bhd||
|TNB-IT Sdn. Bhd.||
|Malaysia Transformer Manufacturing Sdn. Bhd.||
|TNB Global Ventures Capital Berhad||
|TNB Fuel Services Sdn. Bhd.||
|TNB Global Captive (L) Ltd.||
|REV Property Holdings Sdn. Bhd.||
|TNB Integrated Learning Solution Sdn. Bhd.||
|Allo Technology Sdn. Bhd.||
|TNB Research Sdn. Bhd.||
|TNB Engineering Corporation Sdn. Bhd.||
|TNB Renewables Sdn. Bhd.||
|Universiti Tenaga Nasional Sdn. Bhd.||
|TNB Topaz Energy Sdn. Bhd.||100%|
|TNB Energy Services Sdn. Bhd.||100%|
|Power and Energy International (Mauritius) Ltd.||
|TNB International Sdn. Bhd.||
|TNB Ventures Sdn. Bhd.||
|Sabah Electricity Sdn. Bhd.||
|Aruna Servicios Integrales S.L.U.||
|Tenaga Switchgear Sdn. Bhd.||60%|
TNB Power Generation Sdn. Bhd.
TNB Retail Sdn. Bhd.
REV Property Holdings Sdn. Bhd.
- REV Horizon Sdn. Bhd.
- REV Platinum Sdn. Bhd.
- REV Kapar Sdn. Bhd.
- REV Perai Sdn. Bhd.
- REV Zenith Sdn. Bhd.
TNB Research Sdn. Bhd.
- TNB Labs Sdn. Bhd
- Gunung Tenaga Sdn. Bhd.
TNB Engineering Corporation Sdn. Bhd.
- TNEC Construction Sdn. Bhd.
- Bangsar Energy Systems Sdn. Bhd.
- TNEC Operations and Maintenance Sdn. Bhd.
- Airport Cooling Energy Supply Sdn. Bhd.
- Cooling Energy Supply Sdn. Bhd.
- Abraj Cooling L.L.C
TNB Renewables Sdn. Bhd.
- TNB Sepang Solar Sdn. Bhd.
- TNB Bukit Selambau Solar Sdn. Bhd.
- TNB Bukit Selambau Solar Dua Sdn. Bhd.
- SD Plantation TNB Renewables Sdn. Bhd.
Universiti Tenaga Nasional Sdn. Bhd.
- UNITEN R&D Sdn. Bhd.
- Yayasan Canselor Universiti Tenaga Nasional
TNB Energy Services Sdn. Bhd.
- Tenaga E Mobility Solutions Sdn. Bhd.
- MAEVI Sdn. Bhd.
- Metrosphere Hydro Tersat Sdn. Bhd.
- FTJ Bio Power Sdn. Bhd.
- Jana Landfill Sdn. Bhd.
Power and Energy International (Mauritius) Ltd.
- Independent Power International Ltd.
- GMR Energy Limited
TNB International Sdn. Bhd.
- Vantage RE Ltd.
- Vantage Solar Investments S.A.R.L.
- Clean Energy and Infrastructure UK Limited
- JBM Solar Projects 18 Ltd
- JBM Solar Projects 23 Limited
- TWV No.1 Limited
- Vantage RE No.1 Limited
TNB Ventures Sdn. Bhd.
Sabah Electricity Sdn. Bhd.
- Elopura Power Sdn. Bhd.
Aruna Servicios Integrales S.L.U.
- Global Power Enerjî Sanayî Ve Tîcaret Anonîm Şîrketî
Tenaga Switchgear Sdn. Bhd.
- TSG Ormazabal Sdn. Bhd.
- PT. Tenaga Nusa Bakti
Training & Development
Here at TNB, we believe that a competent and professional workforce is quintessential in realizing the vision and mission of the Company. Hence, TNB is fully dedicated in providing quality training, education and development programmes for TNB and its Group of Companies.
TNB has embarked on an Integrated Human Resource & Career Development initiative, whereby training, education & development programmes are directly linked to the career path and progression of the workforce.
TNB Integrated Learning Solution Sdn Bhd – ILSAS
TNB ILSAS is the premier training institution in Malaysia. It is the official training institute for Tenaga Nasional Berhad (TNB). TNB ILSAS has nurtured the human capital of Malaysia’s Electric Supply Industry (MESI) for over 40 years.
Established in 1978 and incorporated as a subsidiary of TNB later in 2008, TNB ILSAS’s strong affiliation with the largest power utility in Malaysia makes it a first-rate training provider and an authority many organizations turn to for consultations and services.
The training modules in ILSAS are also accredited by City & Guilds UK (for the technical programs), and Institute Leadership & Management (ILM) UK (for the leadership & management training modules).
Currently ILSAS provides courses in these the areas of:
Generation & System Operation
Overhead Lines & Cables
Electronics & Instrumentation
Sub-station & Protection
Power System Operation (HVAC & HVDC)
Management & Administrations
Primary & Secondary Equipment Maintenance
Live Line Maintenance
Information Technology & Corporate System
Faulty Analysis / Troubleshooting
Training & Development Skills
Environmental, Social, Governance (ESG)
Advance Technology (AR / VR / Drone)
For more information, contact TNB ILSAS
TNB Integrated Learning Solution Sdn Bhd – ILSAS
Jalan IKRAM-UNITEN, 43650 Bandar Baru Bangi,Selangor,Malaysia
Tel : +603 8922 7222
ILSAS Malim Nawar Branch
PO Box 1, 31700 Malim Nawar,Perak, Malaysia.
Tel : +605 4775 960
Email: [email protected]X
Operation & Maintenance
Power Plant Operation & Maintenance (O&M)
In today’s globalize environment, diversification from a single market is essential for optimum growth. Hence, TNB intends to leverage its repair and maintenance skills under TNB Repair and Maintenance Sdn. Bhd. (REMACO) in order to penetrate promising markets abroad, especially in the emerging markets of the Middle East and Asia.
TNB Repair & Maintenance Sdn. Bhd. (REMACO)
TNB Remaco (TNB Repair & Maintenance Sdn.Bhd.) a wholly owned subsidiary of TNB Power Generation, established in 1995. Specializing in operation & maintenance (O&M), overhaul, and repair & maintenance (R&M) services within the energy industry, TNB Remaco focuses on power plants, including gas, steam, and hydro turbines, boilers, generators, and more.
With technical experience and competencies covering all product lines from the world's leading names in power plant and ancillary equipment, TNB Remaco offers multifaceted solutions and services for installations of all sizes, types, and makes, both within and outside Malaysia.
Expanding beyond Malaysia, TNB Remaco has made significant progress in the international arena, gaining a foothold in overseas markets, including power plants in Saudi Arabia, Pakistan, and Kuwait.
To cater to various business needs, TNB Remaco has strategically structured itself into four distinct solutions.
Maintenance and Repair Services – Repairing, Refurbishment and Reconditioning of Power Plant Components, Machinery, and related equipment
Test and Diagnostic Services – Mechanic and Electrical Testing Diagnostics, Calibration and Analysis Services
Project and Technical Services – Engineering, Procurement and Construction (EPC), Project Management and Consultancy (PMC) Services and Commissioning
- Operation and Maintenance Management – Operation Maintenance (O&M), Contract Management, Project Development and Consultancy
As a power utility repair and maintenance organisation, TNB REMACO is managed on quality response to its own business environment comprising the specialized needs of its growing list of clients and customers. This has entailed strategic investments in technology and human capital development, fuelled by a strong commitment to deliver unsurpassed quality in performance.
TNB REPAIR AND MAINTENANCE SDN. BHD.,
LEVEL 23A, PJX-HM SHAH TOWER, NO.16A, PERSIARAN BARAT, 46050 PETALING JAYA, SELANGOR.
Tel: +603 7964 2600 | Fax: +603 7964 2699 / 2698X