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Green power storage with pump turbine

modular, scalable pump turbine for electric power of 0.5 MW to 15 MW

  • system efficiency of 70-80%             
  • short reaction time                               
  • highly efficient and cost-effective  
  • considerable cost reduction via combination of standard components produced in a series          
  • modular system of identical rotor or motor/generator units, in combination with commercially available frequency converters        
  • high durability, short construction time        
  • buffers all forms of renewable energy
  • compatible with other storage technologies (hybrid storage)

Level of Innovation

  • autonomous regional management at low and medium voltage level
  • first completely modularized pump turbine for small- or large-scale production
  • energy-efficient basis for hybrid storage solutions with significantly reduced demand for rare earth metals

Target Groups and Applications and Applications

  • Large companies and municipal or decentralized energy supply with a need for greater autonomy in electricity management at the medium and low voltage level.
  • Builders and operators of wind power or photovoltaic plants
  • Grid operators and supra-regional energy suppliers
  • Industries with highly fluctuating electricity demand or that have the potential to supply electricity
  • Flagship regions, urban and regional planning
  • Use of existing water reservoirs and inoperative mining pits and mines
  • Flexibilization of existing high-pressure hydropower plants through retrofits
  • High efficiency base with large storage capacity         
  • Low-cost and rare-earth-metal-reduced hybrid storage solutions


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Illustration of the sectional model of a 5-stage pumpturbine

model – Pumpturbine with 5-stages

modular pumpturbine - technical illustration

modular pumpturbine - technical illustration

Count of the upper operating range of the pump turbine.

© TU Wien

Count of the upper operating range of the pump turbine.

© TU Wien

Energy Solutions – Hall 13, Stand D26

An orange paper plane flying up to the headline "Energy Solutions – Hall 13, Stand D26".