Dedicated power generation expertise and solutions for the Hydro Power Industry


installed capacity worldwide4GW Over

of experience50 years

20MWGenerators up to

completed over the last 20 years450 projects Over

ISO 9001 & 14001 certified


A trusted partner

As a historical and recognized player in the field of hydroelectric power generation, Leroy-Somer develops an approach of commitment and transparency, for your full confidence and satisfaction.

Throughout the project life, including design and manufacturing phases, Leroy-Somer teams will help you meet technical and environmental specifications ensuring the perfect configuration and implementation.


The right solution

  • Our products can be coupled to all turbine types, with particular attention to critical speed issues.
  • Overhung runner assembly on extended shaft end, with turbine load withstanding.
  • Rigid mechanical assembly coupled to dynamical balancing grade G1 (ISO 1940-1), aiming at low vibration levels in all operating conditions.
  • Compact design aiming at reducing foundation costs.


Product Range Overview 

Power 0.3 - 20 MW​
Voltage ​400 - 15,000 V
​Rotation speed ​250 - 1500 rpm / 50Hz
300 - 1800 rpm / 60Hz
Mounting ​Vertical or Horizontal
Cooling ​IC01 - IC21 - IC31 - IC81W (IEC 60034-6)
​Insulation class ​H (medium & high voltage)
​Temperature rise class ​F or B
Excitation ​Self-excited - Brushless rotating excitation
Regulation ​Analog or digital Leroy-Somer AVR
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