About Us

Voltech offers professional services in the Operation and Maintenance of a wide range of Oil & Gas, Power and Industrial sectors. These include Onshore/Offshore Oil & Gas, LNG units, Refineries, Power generation plants (combined cycle plants, diesel plants, hydraulic and other renewable energy plants), cogeneration plants, water treatment plants & industrial facilities. Voltech can provide Total Operation and Maintenance services ranging from project development support through mobilization services to O&M contracts from start-up of commercial operation, supporting the whole project life cycle. The dynamic contribution of over 1500 employees is our immense potential.

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To be the foremost provider of exceptional operation and maintenance services, setting the standard for reliability, efficiency, and innovation in power plants, substations, and processing facilities worldwide


Our mission is to deliver unparalleled operation and maintenance solutions, leveraging expertise and cutting-edge technology to ensure the seamless functionality, safety, and sustainability of power generation facilities, substations, and processing plants. We are dedicated to maximizing operational efficiency, minimizing downtime, and fostering enduring partnerships through our commitment to excellence and customer satisfaction.


To establish Asset Management Solutions across the GLOBE as like as INDIA.

Values and Winning Proposition

We Value our Customers More than anything and better than our Competitors.

Benefits of O&M

Strong Safety record - on Health, Safety & Environment
Reducing Cost / Cost Savings / Improve the Gross Margins
Continuous Improvement on quality
Cutting Inventory
Skilled and competent Manpower support - Electrical, Mechanical, Instruments.
Planning and Support Services
Strong Technical skills to support and carry out Erection, Commissioning, Maintenance,
Operation, Project, Shutdown activities.
Maintain all Guarantee parameters / KPIs-Key Performance Indicators
Carry out scheduled Maintenance at specified intervals based on performance and
OEM recommendations
Strong Training capabilities

ISO Certification


O & M Capabilities

Voltech O And M Capabilities

Strong Technical skills to carry out Erection, Commissioning, Maintenance, Operation, Project, Shutdown activities in Oil & gas, Petrochemical, and Power, industries

Manpower support –Skilled, Semiskilled, Technician, Fitters, Labours etc
Consultancy Services on O&M.
Technical Consultancy support services for RCM, CMMS, Equipment strategy implementation, Stores verification, Materials coding & cataloguing.
Total Planning activities-Retrieving PM activities from CMMS, Reviewing, Planning, scheduling, execution and close out of the tasks/activities in SAP and meeting the KPIs through planning Tools like MS Project, Primavera-6 etc.
Technical Training for Engineers and Technicians.

Services Offered

Day to day Operation and Maintenance of the plant
Complete plant staffing.
Planned and unplanned Maintenance services, including spares
Maintenance which includes-Preventive, Predictive, Proactive (RCM,TPM,) by using RCA,RCFA, 5S, Kaizan tools
Shutdown Support
Engineering and Technical support
Equipment service and repair
Utilization of local and remote monitoring and diagnostics
Spare parts, Consumables and tools
Switchgear Maintenance and Management
Inventory management
Local and remote monitoring and diagnostics
Comprehensive training.
Health, Safety & Environment programs
Site documentation and procedure, Method statement development
Site-specific CMMS -Computerized Maintenance Management programs
Retrofitting and refurbishment of Distribution and Power Transformers.
Power delivery
Fuel Management

Our Projects

  M/s. NTPC Lara, Chhattisgarh
- Long Term Maintenance Contract for EMD and C&I for NTPC Lara STPP, Stage - I (2X800 MW)

  M/s. Nuclear Power Corporation of India Ltd
- O&M of 230KV & 400KV GIS at KKNPP, Kudankulam Supporting Mechanical, Electrical and Process activities for Commissioning of seawater systems for KKNPP Unit-2, Kudankulam.
- Operation and Maintenance of Commissioned and charged Electrical and Ventilation Equipment in KKNPP Unit - 2, Kudankulam.

  M/s. UPL-NTECL, Vallur Thermal Power Station, Chennai, Tamil Nadu
- Round the Clock Operation Assistance in Main Plant & Office Equipments.

- Round the clock Field operation and Maintenance of Electrical systems with 400KV substation and Round the Clock Maintenance of all the Controls & Instrumentation Equipment, Associated Systems, Associated Auxiliaries of 6 X 600 MW Thermal Power Plant, Nariyara.

  M/s. STEAG Energy Services (India) Pvt. Ltd
- O&M of 4X600MW IPP, Unit – I & II at Jharsuguda, Odisha

  M/s. Neyveli Lignite Corporation Limited
- Maintenance of 400/220KV SS & 2 x 210 MW Thermal Power Plants, Neyveli.

  M/s. TAQA Neyveli Power Company Pvt. Ltd
- Maintenance of 250 MW Lignite Fired Power Plant, 220KV SS at Virudhachalam, Tamilnadu.

  M/s. Ideal Energy Projects Ltd
- O&M of 1X270MW TPP at Bela, Maharashtra.
  M/s. Gujarat Energy Transmission Corporation Ltd, Gujarat
- EHV Substation Logic check of Control & Protection system including DC Logic & interlocks in 400KV, 200KV & 132KV Substations.
- Operation and Maintenance contract for 07nos. of 66KV Substations.

  M/s. Nuclear Power Corporation of India Ltd.
- 400/220KV GIS SS TAPS – 3&4 at Tarapur

  M/s. SASAN UMPP- Reliance – Madhya Pradesh
- AMC for Switchyards (765KV, 400KV & 132KV) including HT (33KV) and LT Switchgears for SASAN UMPP

  M/s. Green Infra Wind Energy Limited
- 2X25MVA, O&M of 2 Nos. of 66/33KV Substations along with Transmission Line at Karnataka.

  M/s. Bharat Heavy Electricals Limited
- O&M of 110/11KV Substation at Trichy.

  M/s. Konkan LNG Pvt. Ltd (KLPL) – Ratnagiri, Maharashtra
- Hiring of assistance services on Contractual Basis for Mechanical Maintenance

  M/s. Chennai Petroleum Corporation Limited, Manali, Chennai
- All activities pertaining to Operation and Maintenance of Electrical Equipment in 110KV Substation, Manali Refinery.

  M/s. Indian Oil Corporation Limited, Mathura, Panipet
- Testing of Protection System of Electrical Feeders at Mathura Refinery.

  M/s. Cairn India Limted
- Operation And Maintenance of Onshore Wellpads Electrical Packages 33KV Substations, E-Houses at MPT, Barmar Rajasthan
- Maintenance Contract of Relay Testing for 02 years at MPT
- Relay Testing & Calibration at Bjagyam Eld on call out Bsis
- Service contract for Electrical Testing for Pre-Commissioning & Commissioning of RJON Projects.
- Electrical Commissioning of Aishwariya Well Pads.
- Service requisition of Testing team with testing equipments to carrying High Voltage testing at Power Generation & Distribution are (M202) EPC-2.
  M/s. Tata Steel Ltd, Kalinga Nagar, Odisha
- Maintenance of Electrical Equipments in Tata Steel Plant, Kalinga Nagar, Odisha.

  M/s. Bharat Aluminum Company Limited
- AMC of Switchyard & Rectifier Maintenance services for 4X135MW, 4X67.5MW, MRSDS & Smelter at Korba, Chhattisgarh
- Electrical Maintenance services for 4X135 MW TPP at Korba, Chhattisgarh

  M/s. Vedanta Aluminum Limited
- Electrical Maintenance services for 1.25 MTPA Plant – II at Jharsuguda.

  M/s. Dalmia Cements, Ariyalur & Thamaraikulam
- Testing and calibration of relays and meters.

  M/s. Dungsan Cement Corporation Limited, Bhutan
- Supervision and Monitoring activities at Naglam, Bhutan

  M/s. Bannari Amman Sugars Ltd, Sathyamangalam, Nanjangud
- Testing & Calibration of Relays

  M/s. Sakthi Sugars Ltd, Sivaganga
- Testing & Calibration of Protection Relays
  M/s. Aston Field Solar (Rajasthan) Pvt Ltd
- Operation and Maintenance of a 5 MW Thin Flim Photovoltaic Solar Power Photovoltaic Park, Village Betwasia, Tehsil, Osiyan, Dist, Jodhpur, Rajasthan.

  M/s. Larsen & Toubro Limited
- O&M of 06MW Solar PV Plant and O&M of 20MW Solar PV Plant of M/s. Sunclean Renewable Power Private Limited at Charanka, Gujarat

  M/s. Bosch Ltd
- O&M of 1.2 MW Solar Power Plant at Amangal, Telangana
- O&M of 1MW Solar Power Plant at Kerala
- O&M of 1.65 MW Solar Power Plant at Vizianagaram, Andhra Pradesh

   M/s. Vestas Wind Technology India Pvt. Ltd, Karnataka
- Operation and Maintenance activities for 66/33KV Substations with Transmission line at Chitradurge

  M/s. Suzlon Infrastructure Ltd, Tamilnadu
- Operation and Maintenance of 220/33KV Substation and its Ring Main Units at Coimbatore

  M/s. Clean Wind Power (Ratlam) Pvt. Ltd, Madhya Pradesh
- Operation and Maintenance of 220/33KV Pooling Substation for 100MW, Badnawar Wind Power Project at Dhar District, Madhya Pradesh.

  M/s. Hero Futures Energies, Gurvepalli, Andhra Pradesh
- Operation and Maintenance Services for 220/33KV Substation at Gurvepalli, Andhra Pradesh

Valuable Customers

Our Team

We are offering best Services

Feel free to Contact us if you have any queries / requirements


Voltech O And M Services Pvt.Ltd


Voltech ECO Tower No.2/429, Mount Poonamallee Road, Ayyappanthangal, Chennai-600056

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VOLTECH Group is a reputed, experienced and professional Electrical Engineering Company with a proven background in the areas of Testing & Commissioning of medium and heavy-duty Electricals in the Power and Transmission Sector

Contact Us

No. 2/429, Voltech Eco Tower, Mount Poonamallee Road,
Ayyappanthangal, Chennai
Phone: +91-44-43978000
Email: [email protected]