Protergia, the energy of METLEN Energy & Metals, is the main pillar of the Group’s energy activities and the largest private energy provider in Greece. With a steadfast commitment to trust, innovation, sustainability, and customer-centricity, it offers integrated electricity and natural gas solutions to more than 650,000 customers across the country, shaping the energy landscape of tomorrow.
With an extensive energy portfolio that includes natural gas thermal plants and Renewable Energy Sources (RES) units, Protergia is also the largest electricity producer in Greece, with a total installed capacity of 2,040 MW, covering 19.71% of the country’s total electricity demand.
Reliability is the cornerstone of Protergia. With many years of experience and a strong production base, it provides stable, high-quality energy to households, businesses, and industrial clients, setting the benchmark in the Greek market.
For businesses, Protergia develops customized energy agreements (PPAs, CfDs, Call Options), offering cost stability and protection against price fluctuations. This gives companies predictability, control, and a competitive advantage.
Protergia redefines how individuals and businesses experience energy by offering pioneering products that combine technology and simplicity.
A prime example is the Protergia Picasso program, which allows customers to pay the same electricity bill every month for an entire year—with no clauses and no surprises—offering simplicity, peace of mind, and control.
For individuals, the Protergia experience extends across every touchpoint: from fast and friendly service in physical stores across Greece to the user-friendly protergia.gr website and the Protergia App, which provide full autonomy, convenience, and access to all services anytime, anywhere.
For businesses, Protergia designs smart energy solutions (Smart Energy Management) using AI analytics, real-time energy monitoring, and load optimization, helping companies reduce energy costs and increase efficiency.
Through the Energy Wallet platform, tourism and retail businesses can smooth out seasonal expenses, paying in a predictable and efficient way.
At the same time, through services like Smart Meters, Protergia brings the digital era into everyday life, enabling thousands of customers to monitor their consumption in real time, understand their energy behavior, and identify saving opportunities.
Through such initiatives, Protergia demonstrates that innovation is much more than technology—it’s a way of making energy more understandable, accessible, and friendly for everyone.
Protergia’s commitment to sustainability is reflected both in its solutions for individuals and in its strategic energy transition services for businesses.
The Protergia Heat Pumps are a prime example, offering a green, efficient, and economical solution for heating and cooling. With a free on-site assessment and study, complete installation, financing options up to 120 installments, and a €500 reward on the electricity bill, Protergia proves that sustainability can be both affordable and simple.
For businesses, it offers integrated Net Zero Solutions—from Net Billing & Virtual Net Billing photovoltaic systems to heat pumps, LED upgrades, and energy storage.
Protergia’s ESG & Green Certification services support business clients on their path to sustainable growth, ensuring Guarantees of Origin and compliance with international standards.
Equally important, its continuous investments in Renewable Energy Sources strengthen its role in the country’s energy transition, creating value for both the environment and society.
Protergia places the customer—whether individual or business—at the heart of everything it does.
For residential customers, this means prompt service, transparency, consistency, and rewards at every point of contact: through physical stores across Greece, the protergia.gr website, the Protergia App, and the Protergia Club—the new loyalty program that rewards customer trust with exclusive benefits and gifts.
For business customers, Protergia acts as an energy partner, offering personalized consulting, energy planning, and continuous optimization within a relationship built on collaboration and trust.
With an extensive network of physical stores across Greece, a modern call center, and specialized B2B energy consultants, Protergia ensures that every need—from a simple query to a complex energy project—is handled with precision, speed, and human care.
Its customer-centric approach is what makes the difference—because for Protergia, energy is not just a commodity, but an experience built every day through trust, consistency, and genuine human connection.
Protergia is the Electricity and Natural Gas Unit of Metlen, the largest independent electricity producer company in Greece
