TELK

What TELK does

TELK (Transformers and Electricals Kerala Limited) is an Extra High Voltage (EHV) power equipment manufacturer headquartered in Angamaly, near Kochi, Kerala, India. Incorporated in 1963 as a technical and financial collaboration between the Government of Kerala and Hitachi Ltd. (Japan), TELK became a joint venture between the Government of Kerala and NTPC Limited in 2009. The company manufactures power transformers ranging from 20 MVA to 315 MVA (3-phase) / 825 MVA (single-phase bank) up to 420 kV class, along with current transformers (up to 400 kV), voltage transformers (up to 245 kV), transformer bushings (52–420 kV), and on-load tap changers. Manufacturing relies on Hitachi-licensed processes including CRGO laminations, step-lap core construction, copper conductors (PCC, CTC, Bunched PCC), and oil-directed winding cooling systems, validated through an NABL-accredited (ISO/IEC 17025:2005) test laboratory equipped with instrumentation from Hitachi, Haefly, Doble, and Omicron.

TELK operates a project-based B2B revenue model selling one-time capital equipment through competitive tenders to power utilities, state electricity boards, central PSUs (NTPC, NPCIL, PGCIL, NHPC), large private generators (Tata Power, Reliance Energy, Torrent Power), and engineering firms (L&T, ABB, Siemens). Pricing is not publicly disclosed and varies by transformer capacity, voltage class, and customization. The company complements equipment sales with a Rapid Response Customer Service Division (RRCSD) offering renovation, repair, and upgradation services for both TELK-make and other-make units. Export markets include 12+ countries across the Middle East, Africa, South and Southeast Asia, and North America. Headcount is in the 251–500 range, and the company holds ISO 9001:2015 certification, Government of India Export House status, and Kerala Safety Awards.

Name

TELK

Legal name

Transformers and Electricals Kerala Limited

Website

https://telk.com

Company type

Private

Founded year

1963

Operating status

Operating

Headcount range

251–500 employees

Short description

TELK (Transformers and Electricals Kerala Limited) manufactures Extra High Voltage power transformers (up to 315 MVA, 420 kV), instrument transformers, bushings, and tap changers, primarily supplying Indian central PSUs, state electricity boards, and export utilities in 12+ countries from its Angamaly, Kerala facility.

Ownership category

akta.pro rank

Product category

Power Transformer Manufacturing

NAICS

Power, Distribution, and Specialty Transformer Manufacturing (335311)

SIC

Power, Distribution & Specialty Transformers (3612)

akta.pro primary industry

Transformers (Power, Distribution, Instrument, Specialty) (IMAGAAAA)

akta.pro secondary industries

Transmission & Distribution Line Equipment (Bushings, Insulators, Arresters, Conductors, Hardware) (IMAGAAAF), Instrument Transformers (CTs/VTs) & Sensors (Conventional/Optical) (EUADACAG)

Keywords

• Power transformer manufacturing
• Instrument transformer production
• Extra high voltage equipment
• Transformer bushing manufacturing
• Tap changing gear

Headquarters

HQ city

Cochin

HQ country

India

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Power Transformer Sales: Manufacturing and sale of Extra High Voltage Power Transformers up to 315 MVA, 420 kV class. Revenue generated through direct sales to power utilities, state electricity boards, and industrial customers via tender and contractual processes.
2. Instrument Transformer Sales: Sale of Current Transformers, Voltage Transformers, and Transformer Bushings up to 420 kV class. Sold to other transformer manufacturers and utilities.
3. Tap Changing Gear Sales: Manufacture and sale of On Load and Off Load Tap Changers primarily for TELK transformers and to other transformer manufacturers in India.
4. Rapid Response Customer Service: Repair, maintenance, renovation, and upgradation services for TELK and other make power transformers. Includes Spare parts supply and field service support with guarantee period of 12 months from commissioning or 18 months from dispatch.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

TELK manufactures Extra High Voltage Power Transformers (20 MVA to 315 MVA 3-phase / 825 MVA single-phase bank, up to 420 kV class) along with Current Transformers (up to 400 kV), Voltage Transformers (up to 245 kV), Transformer Bushings (52-420 kV), and On Load/Off Load Tap Changers. The company also operates a Rapid Response Customer Service Department (RRCSD) for repair, maintenance, renovation, and upgradation of power transformers. Manufacturing is based on technology originally licensed from Hitachi Ltd., Japan.

Product overview

TELK (Transformers and Electricals Kerala Limited) is a manufacturing company that produces Extra High Voltage electrical equipment. The product portfolio consists of five core products: Power Transformers (20-315 MVA, up to 420 kV), Current Transformers (up to 400 kV), Voltage Transformers (up to 245 kV), Transformer Bushings (up to 420 kV), and Tap Changing Gear (On Load and Off Load types). These products are complemented by a Rapid Response Customer Service department for repair, maintenance, and upgradation of transformers. The company operates as a joint venture between the Government of Kerala and NTPC Limited, having originally started as a technical and financial collaboration with Hitachi Ltd, Japan.

Differentiator

Problem solved

Functional benefit

Products and services

• Power Transformers

Quantifiable outcome

• Over 20,000 Current Transformers and 3,000 Voltage Transformers supplied to utilities
• +3 more outcomes

Named customers19 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Two partnerships are on record, tiered minor and core.

• Duke Flour Daniel (DFD), USAminorStrategic or Co-development Partner · 1 January 1972Order received in 1997 from Duke Flour Daniel, USA for supply of 11 power transformers (50-100 MVA) for their projects in Indonesia.
• Hitachi Limited, JapancoreTechnology or Integration · 1 January 1963Original technical and financial collaboration agreement signed in 1963 to set up a unit for designing and manufacturing Extra High Voltage Electrical equipment. TELK adopted Hitachi's Japanese technology and manufacturing methods. This partnership enabled TELK to give India its first 400kV Class Transformer and first 315MVA Auto Transformer.

Scale indicators8 records

Recent moves8 records

Expansion highlights6 records

Broad incumbents

• ABB India Limited: Subsidiary of global ABB offering the broadest portfolio including 765 kV and HVDC transformers, switchgear, and digital substations. Competes with TELK in high-value utility tenders while also serving as a customer-side integrator.
• Siemens Limited (India): Indian arm of Siemens Energy manufacturing power transformers and turnkey substation solutions. Competes with TELK for utility tenders and supplies broader grid integration packages.
• Schneider Electric India: Provides distribution and power transformers, MV/LV switchgear, and digital energy management. Indirectly competes with TELK via EPC customers like L&T and through substation integration packages.
• Hitachi Energy India: Successor to ABB Power Grids and the same Hitachi technology lineage that originally founded TELK. Offers transformers across all voltage classes including HVDC, making it both a peer and a benchmark for TELK's inherited Hitachi technology.
• GE T&D India Limited (GE Vernova): Indian subsidiary offering power transformers, switchgear, and grid automation. Competes with TELK in EHV tenders from PGCIL and large industrial customers.

Direct peers

• Voltamp Transformers Limited: Indian manufacturer of power, distribution, and special transformers serving utilities and EPC firms. Overlaps directly with TELK in voltage classes and customer base of state electricity boards and industrial customers.
• Transformers and Rectifiers (India) Limited: Indian manufacturer of power and distribution transformers up to 400 kV and large MVA ratings. Competes with TELK for utility tenders in India and exports to similar international markets.
• Bharat Heavy Electricals Limited (BHEL): India's largest power equipment manufacturer and PSU that produces EHV power transformers up to 800 kV class. Directly competes with TELK in tenders from NTPC, PGCIL, and state electricity boards across the same voltage and MVA ranges.
• CG Power and Industrial Solutions Limited: Indian manufacturer of power transformers and allied equipment, historically tied to global technology. Competes directly with TELK for EHV tenders and supplies similar instrument transformer products.

Emerging players

• TBEA Energy (India) Private Limited: Chinese transformer giant with a growing Indian manufacturing presence supplying 765 kV class transformers. Competes with TELK on price in Indian utility tenders and is expanding share in the EHV segment.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/Transformers-and-Electricals-Kerala-Limited-TELK-120791634670252
• LinkedInlinkedin.com/company/transformers-and-electricals-kerala-ltd.

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about TELK