# EPC Contractors Directory & Turnkey Power Plant Builders

> Comprehensive directory of premier Engineering, Procurement, and Construction (EPC) contractors specializing in turnkey power plants (Combined Cycle Gas Turbines - CCPP, Simple Cycle - SCGT), High-Voltage & Extra-High-Voltage (HV/EHV 154 kV / 380 kV / 400 kV) AIS and GIS substations, Balance of Plant (BOP / E-BOP), and utility-scale renewable energy infrastructure.

## How to select an EPC contractor

EPC means engineering, procurement and construction. Compare contractors by project technology, country, voltage level and contractual delivery scope.

## Directory methodology

This directory presents company profiles, not a scored ranking or certification. Company-wide experience may include engineering, EPCM, equipment supply and consortium roles. Confirm the exact role, current qualifications and project references with the official company before shortlisting.

## What should an EPC enquiry include?

Specify the project country, capacity, grid voltage, single-line diagram, site conditions, scope boundaries, target schedule and acceptance tests. Clarify who owns permitting, civil works, grid studies, commissioning and performance guarantees.

Equipment enquiries submitted here go to Voltformer. Contact the listed company directly for its EPC services.

## Featured EPC Contractors

- [Bechtel Corporation](https://voltformer.com/epc-contractors/bechtel.md): World Premier Engineering, Construction & Project Management Megaproject Contractor (HQ: Reston, Virginia, United States; Est. 1898)
- [Siemens Energy AG](https://voltformer.com/epc-contractors/siemens-energy.md): Global Leader in Turnkey Power Generation, HVDC & Grid Transmission EPC (HQ: Munich, Germany; Est. 2020)
- [GE Vernova](https://voltformer.com/epc-contractors/ge-vernova.md): Leading Global Turnkey Energy Infrastructure & Power Plant Contractor (HQ: Cambridge, Massachusetts, United States; Est. 2024)
- [VINCI Energies](https://voltformer.com/epc-contractors/vinci-energies.md): Leading Global Turnkey Energy Infrastructure & Power Grid Engineering Group (HQ: Montesson, Île-de-France, France; Est. 2000)
- [Worley Limited](https://voltformer.com/epc-contractors/worley.md): Leading Global Engineering, Advisory & Turnkey Energy Solutions Provider (HQ: London, United Kingdom & Sydney, Australia; Est. 1971)
- [Fluor Corporation](https://voltformer.com/epc-contractors/fluor.md): Global Leader in Turnkey Energy EPC, Decarbonization & Advanced Facilities (HQ: Irving, Texas, United States; Est. 1912)
- [Saipem S.p.A.](https://voltformer.com/epc-contractors/saipem.md): Leading Global Turnkey Energy Infrastructure, Power & Offshore EPC Contractor (HQ: Milan, Italy; Est. 1957)
- [JGC Holdings Corporation](https://voltformer.com/epc-contractors/jgc-holdings.md): Premier Japanese Turnkey Power Plant & Clean Energy Mega-EPC Contractor (HQ: Yokohama, Japan; Est. 1928)
- [Hyundai Engineering & Construction (Hyundai E&C)](https://voltformer.com/epc-contractors/hyundai-ec.md): World-Leading Turnkey Power Plant, Nuclear & EHV Substation EPC Conglomerate (HQ: Seoul, South Korea; Est. 1947)
- [ENKA Insaat ve Sanayi A.S.](https://voltformer.com/epc-contractors/enka.md): World-Class Global EPC Contractor in Mega Power Plants & Infrastructure (HQ: Istanbul, Turkey; Est. 1957)
- [John Wood Group PLC](https://voltformer.com/epc-contractors/wood-plc.md): Global Leader in Consulting, Engineering & Energy Transition Infrastructure Delivery (HQ: Aberdeen, Scotland, United Kingdom; Est. 1982)
- [Petrofac Limited](https://voltformer.com/epc-contractors/petrofac.md): Leading International Energy Infrastructure, Power & Offshore Wind EPC Provider (HQ: London, United Kingdom; Est. 1981)
- [Técnicas Reunidas](https://voltformer.com/epc-contractors/tecnicas-reunidas.md): European Power & Energy Infrastructure Lump-Sum Turnkey EPC Pioneer (HQ: Madrid, Spain; Est. 1960)
- [ENPRODE](https://voltformer.com/epc-contractors/enprode.md): Leading Global Power Plant & Energy Infrastructure EPC Contractor (HQ: Istanbul, Turkey; Est. 2005)
- [Mott MacDonald Group](https://voltformer.com/epc-contractors/mott-macdonald.md): Global Engineering, Management & Energy Infrastructure Technical Consultancy (HQ: Croydon, London, United Kingdom; Est. 1902)

## Capabilities Matrix

- **Turnkey Power Plant EPC:** Natural gas CCPP, SCGT, geothermal, biomass, industrial cogeneration.
- **Substations & Switchyards:** 154 kV, 380 kV, 400 kV Air-Insulated (AIS) and Gas-Insulated (GIS) substations.
- **Balance of Plant (E-BOP & M-BOP):** Step-up transformers, MV/LV switchgear, protection and control (IEC 61850).
- **Grid Compliance & Studies:** Load flow, short-circuit, stability, and transmission system operator (TSO) interconnection.

Web Directory: https://voltformer.com/epc-contractors