Greece's Renewable Energy Transformation
Greece has made remarkable progress in renewable energy over the past decade. Abundant sunshine, strong winds on islands and mountain ridges, and ambitious national targets have attracted billions of euros in investment. The country has been phasing out lignite power plants and, on many days, renewables now cover the majority of electricity demand. Storage, grid interconnections and green hydrogen projects are the next frontier.
Athens is the corporate center of this transformation. Most major energy companies have their headquarters in the city or its northern suburbs such as Marousi and Kifissia, where they manage projects across Greece and abroad.
Top 10 Renewable Energy Companies in Athens
1. PPC Group
The Public Power Corporation, known as PPC, is Greece's largest electricity company and is rapidly transforming its portfolio toward renewables. Through its renewables subsidiary, it is developing large solar parks, including projects on former lignite mining land in western Macedonia, along with wind, hydro and storage assets.
2. Metlen Energy and Metals
Metlen, formerly known as Mytilineos, is one of Greece's largest industrial groups and a major international developer of solar and storage projects. Its renewables business develops and sells projects across Europe, Latin America and Australia, while its energy division supplies electricity to Greek consumers.
3. Terna Energy
Terna Energy is one of the pioneers of renewable energy in Greece, with a large portfolio of wind farms, hydroelectric plants and pumped storage projects. Its Amfilochia pumped storage project is among the most significant energy storage investments in the country.
4. HELLENiQ Renewables
HELLENiQ Renewables is the green energy arm of HELLENiQ ENERGY, the Greek refining group. It has built a growing portfolio of solar and wind projects and plays a central role in the group's strategy to diversify beyond oil refining.
5. Principia
Principia is a renewable energy platform that brings together assets previously held by Enel Green Power in Greece with investment from Macquarie. It operates a substantial portfolio of wind, solar and small hydro plants and continues to develop new capacity.
6. MORE (Motor Oil Renewable Energy)
Motor Oil Hellas has established MORE as its renewable energy subsidiary, acquiring and developing wind and solar assets. The company reflects the strategic shift of Greek oil groups toward cleaner energy sources.
7. Ellaktor Renewables
Ellaktor, one of Greece's largest construction and concessions groups, built a significant wind portfolio over many years through its renewables subsidiary. Its experience in infrastructure development supports the construction of complex energy projects.
8. Iberdrola Rokas
Iberdrola Rokas, part of the Spanish energy group Iberdrola, has a long history in Greek wind energy. It operates wind farms across the country and brings international expertise to the Greek market.
9. EDPR Greece
EDP Renewables, the renewables arm of the Portuguese energy group EDP, has developed a portfolio of wind and solar projects in Greece. Its Athens-based team manages development and operations as part of the company's European expansion.
10. Eunice Group
Eunice is a Greek renewable energy group that develops wind, solar and hybrid projects, including innovative island energy solutions. It has worked on projects that combine renewables with storage to support energy autonomy on Greek islands.
Why Athens Is a Renewable Energy Hub
Athens offers access to government ministries, regulators such as the Regulatory Authority for Waste, Energy and Water, the electricity transmission operator, banks and investors. The city's universities, including the National Technical University of Athens, supply engineers and researchers, while a growing number of energy startups are developing digital tools for grid management, energy efficiency and smart metering.
Key Trends in Greek Renewable Energy
Energy storage is a top priority, as high solar output creates the need to shift electricity to evening hours. Interconnections linking the islands to the mainland grid, and Greece to neighboring countries, are expanding. Offshore wind is in the planning stage, and green hydrogen projects are being explored. Corporate power purchase agreements are also growing, as companies seek long-term, low-cost renewable electricity.
How Businesses Can Benefit
Companies in Athens can work with renewable energy providers to install rooftop solar, sign green electricity contracts or invest in energy storage. These measures reduce energy costs, improve resilience and support sustainability goals, which are increasingly important for customers, investors and regulators.
Frequently Asked Questions
How much of Greece's electricity comes from renewables?
Renewable sources, mainly solar and wind, now account for a large and growing share of Greek electricity generation, and on sunny, windy days they can cover most of the country's demand.
Can businesses buy renewable electricity directly?
Yes. Companies can choose green electricity tariffs from suppliers or sign long-term power purchase agreements directly with renewable energy producers to secure stable, clean power.
Are there jobs in the Athens renewable energy sector?
Yes. Developers, engineering firms and utilities based in Athens regularly recruit engineers, project managers, financial analysts and environmental specialists to support their expanding portfolios.
Conclusion
Greece's energy transition is one of the most dynamic in Europe, and the Athens-based companies listed here are at its forefront. From national utilities to innovative developers, they are building the clean energy infrastructure that will power the country's future and create new opportunities for businesses and communities.