Coral

Powering the Future:
Engineering Excellence
Without Limits

Coral Group of Companies

Founded in 1979, Coral Group of Companies excels in manufacturing and engineering, specialising in windmill generators, coils and wires. Our success over four decades is built on a foundation of quality, hard work and timely service. As a family-run business, we offer affordable, high-quality solutions from production to after-sales service, ensuring global reach and customer satisfaction. Our integrated approach under one roof makes us a trusted industry partner, dedicated to innovation and excellence. Our integrated approach and global presence make us a trusted industry partner committed to innovation, reliability, and international standards.

Comprehensive Engineering Solutions Under One Roof

Coral Rewinding
india Pvt Ltd

Coral Rewinding, an ISO 9001-2015 certified company, specialises in repairing and refurbishing AC/DC machines. With a 275-strong workforce, we offer both onsite and offsite services, including 24/7 emergency support. Trusted by top motor manufacturers, we are a reliable partner for rotating electrical machine services.

Coral Coil
india Pvt Ltd

Coral Coil specialises in the design and reverse engineering of motors and generators. As India’s only IMS-certified coil manufacturer (ISO 9001: 2015 ISO 45001:2018 ISO 14001:2015) and an EASA member, we manage everything from coil and turbo bar design to servicing LT/HT motors. We prioritise urgent needs with quick quotes, production and delivery, ensuring quality with reputable suppliers adhering to IEC and IEEE standards. We at Coral are proud to have our coils certified by the prestigious Manitoba Hydro – High Voltage Test Facility.

GJ Wires
india Pvt Ltd

G.J Wires, established in 2020, specialises in high-quality insulated wires for HV machines, traction motors, large generators and electric vehicle motors. Recognised for consistent quality, our ISO 9001:2015 certified system ensures top-notch products. With advanced insulation technology expertise, we support customers at every stage of product development.

Coral Engineering
Works

Coral Engineering Works aims to be a global leader in coil manufacturing and supply for wind turbine generators, contributing to green energy production. Specialising in high-quality concentric and diamond coils and adhering to ISO 9001:2015, ISO 45001:2018, and ISO 14001:2015 standards, we focus on delivering value-based solutions for sustainable electric power.

Coral manufacturing
works india Pvt Ltd

Coral Manufacturing Works invested INR 800 million in a state-of-the-art generator manufacturing facility for wind, hydro and turbo generators, operational from 2021. Spanning 25 acres, this IMS-certified (ISO 9001: 2015 ISO 45001:2018 ISO 14001:2015) plant ensures international quality standards and features extensive vertical integration, from wire production to coil and generator assembly, enhancing quality, cost-effectiveness and sustainability.

CEW–SEZ Advanced Tech Unit

Launched in 2025, Coral’s CEW–SEZ unit manufactures stator bars, coils, and kit materials for motors and generators up to 1000 MW / 24 KV. The cutting-edge facility strengthens Coral’s innovation edge in energy and industrial manufacturing.

NewGen Wires & Coils Pvt. Ltd.

Established in 2016, NewGen produces high-quality insulated wires for EVs, wind energy, and high-voltage applications. With ISO 9001:2015 certification and facilities in Bangalore and Erode, we offer a combined annual capacity of 1000 tons copper and 600 tons aluminium wire backed by strong technical expertise and trusted quality.

Von Roll India Acquisition

In 2025, Coral Group acquired Von Roll’s insulation plants in India, adding world-class technology and legacy know-how to its portfolio. This move positions Coral as a global leader in integrated electromechanical insulation from wires to complete generator systems.

Meet our Directors

Rajarajan ponnusamy

Founder/Managing Director

Rajkumar Rajarajan

Joint Managing Director/Global Business Development

George Joseph

Director/Technical advisor

Meet our global team

Flora Marques

Managing Director, Coral Coil USA

John Kolic

Senior Vice-President of Sales, Canada

Theo Kaffenberger

Consultant, Europe

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Testimonials

Coral Manufacturing Works stands out as a premier generator production facility; their team’s passion, dedication and commitment towards consistent deliveries was top notch. They exceeded our expectations with unmatched quality and efficiency of the generators they produce

We are very satisfied with Coral Coil products and engineering support. Their Coils´ quality equals or exceeds the quality of european or american suppliers. Coral Coil customer service is also good and expedited, which is someting our company considerably appreciates. Based on their huge capacities, we consider Coral Coil an exelent partner in the long term.

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