2021-10-19
Voith Hydro upgrades three power units from Belgium’s largest
pumped storage plant Coo-Trois-Ponts owned by ENGIE Electrabel
- Modernization of turbines and generators from construction phase Coo I set to deliver increased capacity and performance.
- Power plant essential to maintaining grid stability in Belgium.
- Works to span a period of four years.
An international team of Voith Hydro experts in Germany and the USA will be responsible for the model testing. The subsequent work on turbines and generators to increase performance will be conducted partly on site in the power plant and partly at Voith’s facilities in Heidenheim.
Among other things, new runners and distributors will be manufactured for the turbines. For the generators, the priority will be to improve cooling and insulation. For Voith Hydro, the project is an important follow-up order from its customer ENGIE Electrabel. Previously, Voith had completed an extensive automation contract that already included the supply of new control and excitation technology as well as speed governors for the power plant’s six machines.
Pumped storage an essential part of Belgium’s energy mix
Pumped storage is currently the only option for storing electricity on a large scale. In Belgium, the Coo power plant is therefore absolutely essential to maintain balance in the grid. The turbines can currently be ramped up at any time to balance out a sudden drop in generation or absorb excess power. If demand is too low, Coo therefore stores the electricity that has been produced at another location, to then make it available again at peak consumption times.
In this way, Coo has been playing a key role in Belgium’s energy mix for nearly 50 years. The maximum output of the power plant is 1,080 MW, making it one of the most efficient plants of its kind in Europe.
Forward-looking expansion planned
With the upgrade of the three power units, ENGIE Electrabel is also investing in a reliable future supply and grid stability. But to also continue to satisfy the growing requirements of the electricity grid, the company will increase the stored energy of the plant by 450 MWh.
About the company
The Voith Group is a global technology company. With its wide range of plants, products, services and digital applications, Voith sets standards in the markets for energy, paper, raw materials and transport & automotive. Founded in 1867, Voith today has more than 20,000 employees and earns 4.2 billion euros in sales. It has locations in over 60 countries and is one of Europe’s larger family-owned companies.
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The Group Division Voith Hydro is part of the Voith Group and a leading full-line supplier as well as trusted partner for equipping hydropower plants. Voith develops customized, long-term solutions and services for large and small hydro plants all over the world. Its portfolio of products and services covers the entire life cycle and all major components for large and small hydro plants, from generators, turbines, pumps and automation systems, right through to spare parts, maintenance and training services, and digital solutions for intelligent hydropower.
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