Our Members

ENERWAVE is the first independent electricity producer in Greece and one of the largest and most reliable Electricity and Natural Gas supplier in the country, with a dynamic presence also in the Energy Services market.

In addition, it is one of the main importers of LNG in the country and a major player in the cross-border energy trade, as well as one of the largest RES Aggregator in Greece. At the same time, utilizing the most advanced technology, it provides a wide range of high quality energy efficiency services including distributed power generation, building upgrades, energy monitoring & management and certification, aiming at reducing customers’ energy costs, increasing their energy efficiency and reducing their environmental footprint.

With innovation deeply rooted in its DNA, the Company’s vision is to become the leader in providing outstanding and innovative energy solutions as well as to add value to Greek society on a daily and consistent basis, contributing to energy sufficiency, sustainable development and economic prosperity of the country.

With its two privately-owned, natural gas fired combined cycle power plants ENERWAVE commits itself to one of the most environmentally friendly electricity production processes. At the same time, the combined cycle state-of-the-art technology used in both ENERWAVE’s power plants, ensures the most efficient use of fossil fuels, achieving an efficiency of about 56%.

Today, ENERWAVE is a leading company both in electricity production and supply, and gas supply. It aspires to always be one of the most important players in its sector, offering energy services of the highest quality, at competitive prices, with stability and consistency.

HELLENiQ ENERGY, formerly known as HELLENIC PETROLEUM, is a leading integrated energy Group in Southeast Europe, founded in 1998. Its portfolio spans across the energy value chain, with activities in 6 countries. 

HELLENiQ ENERGY is actively driving transformation in all its markets, while embracing innovation and developing new initiatives. The company aims to become a leading provider of low carbon energy solutions and to improve its processes with the goal to reach net-zero by 2050. 

HELLENiQ ENERGY is active in the production, supply and trading of all types of energy, with an increasing focus in clean energy and renewables. The company’s diversified portfolio in the oil and gas value chain, include refining, supply and trading of oil and petrochemical products, hydrocarbons exploration & production and fuels marketing, while rapidly growing in renewable energy. Through JVs and participations, HELLENiQ ENERGY has significant presence in the power generation, supply and trading of natural gas and electricity. 

HELLENiQ ENERGY places people at the heart of the business and promotes long-term access to sustainable energy for all. As a major investor, employer and an active member of society, the company has a significant socioeconomic impact in the countries where it operates and aspires to be a corporate citizen of choice. 

HERON has been actively involved in the fields of electricity generation and supply since 2004. GEK TERNA S.A. Group  owns HERON, with 100% participation. 

HERON’s  Combined Cycle Thermoelectric Station (CCGT) has a capacity of 442 MW and is located 4 km south of the city of Thiva in the Viotia region. The site lies adjacent to the old Thiva-Elefsina National Road, in a semi-rural industrial area at an altitude of approximate 295 meters.  The site is located near both the natural gas transmission and the high-voltage transmission systems, operating at 150 and 400 kV. 

This facility is one of the most modern and technologically advanced power plants in the energy production sector. The station’s efficiency ranks it at the top of technological performance. Its high efficiency implies reduced fuel consumption and, consequently, lower carbon dioxide (CO2) emissions, making this power plant one of the most environmentally friendly electricity generation units, second only to renewable energy sources.  Construction of the station began in 2007 and was successfully completed in 2010 by TERNA S.A. (EPC), when the plant commenced commercial operation. 

Starting in 2025, HERON will be a major energy off-taker of the production of the new 880 MW ultra-efficient (63%) Komotini CCGT co-owned by GEK TERNA and Motor Oil.

KORINTHOS POWER S.A. shareholders are PROTERGIA (65%) and MOTOR OIL (35%).

KORINTHOS POWER owns and operates a Gas-fired Combined Cycle Thermal Plant of 436 MW in Agioi Theodoroi, Korinthia. Engineering, procurement, construction and commissioning of the plant, including the GIS substation, have been carried out by METKA SA -METLEN Energy & Metals. The plant entered commercial operation in April 2012.

The company has been certified and implements: Quality Management System according to EN ISO 9001:2008, Environmental Management System according to EN ISO 14001:2004 and Health and Safety Management System according to OHSAS 18001:2007.

METLEN Energy & Metals (previously known as MYTILINEOS Energy & Metals) is a global industrial and energy company with a leading position in the metallurgy and energy sectors, focused on sustainable development and the circular economy.

The company has established itself as a benchmark for competitive “green” metallurgy at both the European and global levels, while offering comprehensive energy solutions by implementing thermal and renewable energy projects, electricity distribution and trading, alongside investments in network infrastructure, battery storage, and other “green” technologies. It operates in markets across all five continents, in 40 countries, applying a fully collaborative model between its sectors.

Motor Oil Group is a leader in the energy sector for more than 50 years – in Greece
and in the wider Eastern Mediterranean region. It supports the economy with exports
to over 75 countries, more than 3.000 employees, and continuous new investments.
Τhe Group’s Refinery located in Ag. Theodoroi in Corinth is the largest purely private
industrial complex in Greece and is considered one of the most modern refineries in
Europe.
In the Group level, Motor Oil has a significant presence in trade due to the liquid fuel
retail networks of its subsidiaries AVIN OIL and Coral (Shell Licensee). In the
lubricants sector, the Group is represented by its subsidiary, LPC S.A. The Group
enjoys a presence in the liquefied gas sector through Coral Gas. Additionally, has a
presence in the power market thought its subsidiary nrg. The Group continues to
invest in e-mobility via incharge, developing strategic partnerships and continuously
equipping its gas stations with charging points.
The subsidiary MORE is growing dynamically. It is noted that MORE will have a
portfolio of projects in various stages of development with a capacity of more than 2.8
GW.
In the context of energy transition, Motor Oil Group is constantly investing in circular
economy and renewable and alternative fuels. Indicatively, the acquisition of Verd,
the joint venture with PPC to produce green hydrogen, the construction of the
Combined Cycle Gas Turbine (CCGT) power plant fueled with natural gas in
Komotini. To this direction the Group acquired 100% of Thalis E.S., one of the most
dynamic representatives in the circular economy sector in Greece. In 2025,
strengthening this pillar, it also proceeded with the acquisition of Helektor.

Thermoilektriki Komotini S.A. is a joint investment of the energy groups Motor Oil and GEK TERNA, each holding a 50% participation.

The company owns and operates a natural gas–fired Combined Cycle Gas Turbine (CCGT) power plant with a total gross capacity of 877 MW and a gross efficiency of 64%. The plant is located within the Industrial Area of Komotini, in Northern Greece, on a privately owned site covering approximately 100,000 m².

The facility is connected to the National Electricity Transmission System through the 400 KV Filippi – Nea Santa transmission line via an approximately 7 km interconnection line.

The power plant’s main generating equipment includes a Siemens SGT5-9000HL gas turbine with a capacity of 593 MW and a Siemens SST-5000 steam turbine with a capacity of 289 MW. The unit is among the most efficient combined cycle power plants worldwide in a 1×1 configuration, achieving high efficiency and reduced CO₂ emissions.

The plant entered trial operation in December 2024 and contributes to strengthening generation adequacy and security of supply in the Greek electricity system.