Austria’s VERBUND has chosen GE Renewable Energy to supply and commission one 45-MW generator for the extension of the 430-MW Reisseck II Pumped Hydro Storage Power Plant in Carinthia/Austria.
The project will be executed by GE Renewable Energy in a consortium with GE Power Conversion, which is supplying frequency converters and an excitation transformer as well as the control unit.
The Reisseck II pumped hydro storage power plant went into operation in 2016 and will be extended by Reisseck II+, an underground cavern power plant. Reisseck II is the second largest pumped hydro storage power plant of the Malta/Reisseck power plant group. The expansion will add another 45 MW of capacity. Construction is scheduled to start in the spring of 2021. From 2023, the new pumped storage power plant, in combination with the existing systems, will serve to support the integration of wind and photovoltaic systems in Austria and continue to serve as a supporting pillar for grid security.
For the extension of Reisseck II, VERBUND will use the reservoirs Großer Mühldorfer See and Kleiner Mühldorfer See. Reisseck II can store as much power as would be generated by 200 wind turbines, on demand to the grid, thus making optimum use of renewable energy.
GE Hydro Solutions’ fully-fed variable speed technology allows for immediately available electricity, high flexibility and short response times to load changes, according to a press release. Due to the higher flexibility and predictability, power peaks in the grid can be covered even more efficiently. For a unit, variable speed can increase weighted efficiency in turbine mode by an average of 1% and pumping power adjustment range by 30%.
“Variable speed technology is included in half of the pumped hydro storage projects developed by GE Renewable Energy,” said Pascal Radue, chief executive officer of GE Hydro Solutions. “In Austria, a country where hydropower is so crucial, Reisseck II+ is the third project where we are applying this breakthrough technology. We are really excited to join forces with VERBUND at the forefront of the next wave of pumped hydro storage in Austria.”
GE Renewable Energy combines onshore and offshore wind, blades, hydro, storage, utility-scale solar, and grid solutions as well as hybrid renewables and digital services offerings.