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Jebba hydropower plant in Nigeria_Copyright ANDRITZ

ANDRITZ to modernize third unit at Jebba hydropower plant, Nigeria

2026/07/01

Mainstream Energy Solutions Limited (MESL) has awarded international technology group ANDRITZ the contract to modernize generating unit 2G4 at the Jebba hydropower plant.

The upgrade will improve the unit’s efficiency, power output, and operational flexibility, helping to increase the supply of reliable renewable electricity. This is the third unit upgrade contract awarded to ANDRITZ at Jebba, following the successful modernization of units 2G6 and 2G5.

The order has a value in the mid double-digit million-euro range and will be included in ANDRITZ’s order intake for the second quarter of 2026.

ANDRITZ will supply the electro- and hydromechanical equipment for unit 2G4, including a new turbine with a unique hydraulic propeller-type design, a new generator, auxiliary equipment, and the intake gate. Developed jointly with MESL, the innovative turbine design will enable deep part-load operation, increased efficiency, and higher power output, allowing MESL to optimize power generation performance and further strengthen its contribution to Nigeria's energy transition.

“When we took over the Jebba power plant in 2013, it required extensive modernization. With ANDRITZ’s help, we are not only rehabilitating the plant but optimizing it. This allows us to provide a reliable supply of renewable electricity to a growing number of people across Nigeria,” says Engr. Lamu Audu, Managing Director and CEO of Mainstream Energy Solutions Limited.

Originally commissioned in 1985, the Jebba plant comprises six 96.4 MW turbines with a total installed capacity of 578.4 MW. MESL, a privately owned power generation company, operates four major Nigerian hydroelectric facilities under concession agreements with the Federal Government of Nigeria. With 2,078 MW of total installed capacity, the company generates more than 25% of Nigeria’s electricity.

“Being selected for a third project at Jebba reflects the successful execution of the previous upgrades and the trust MESL places in our technology and project teams,” said Anton Schindele, Vice President Service and Rehab Austria of ANDRITZ. “Hydropower plays a central role in providing reliable renewable electricity, and we are pleased to continue supporting MESL in strengthening Nigeria’s power infrastructure.”

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Jebba hydropower plant in Nigeria

Col. Sani Bello (RTD), Chairman of MESL, during a site visit, accompanied by Abdul Raheem Samee, Deputy Site Manager at ANDRITZ

© MESL

Turbine pit after overhaul

ANDRITZ GROUP
International technology group ANDRITZ provides advanced plants, equipment, services, and digital solutions for a wide range of industries, including pulp and paper, metals, hydropower, environmental, and others. Founded in 1852 and headquartered in Austria, the publicly listed group employs about 30,000 people at 280 locations in over 80 countries.

As a global leader in technology and innovation, ANDRITZ is committed to fostering progress that benefits customers, partners, employees, society, and the environment. The company’s growth is driven by sustainable solutions enabling the green transition, advanced digitalization for highest industrial performance, and comprehensive services that maximize the value of customers’ plants over their entire life cycle. ANDRITZ. FOR GROWTH THAT MATTERS.

ANDRITZ HYDROPOWER
ANDRITZ Hydropower is one of the world's leading suppliers of electromechanical equipment and services for hydropower stations in the dynamically growing global renewable energy market. Based on 185 years of experience and a global installed capacity of 492 gigawatts, we offer innovative solutions for new and existing hydropower stations, from small hydropower to large-scale plants. State-of-the-art digital solutions, comprehensive services for the operation and maintenance of entire hydropower plants, synchronous condensers for grid stability and turbo generators for the thermal industry complete the portfolio.