Apparatus and method for generating electric power from a subsurface water current

A subsurface power generating system comprising:

• a frame;
• a first electric generator supported by the frame, the first electric generator operably connected to a first vertical rotor;
• a second electric generator supported by the frame, the second electric generator operably connected to a second vertical rotor;
• a first louver operably connected to the first vertical rotor and including a front side, and a back side, and pivotable between a first position whereat the backside is in contact with a first pivot limiting structure, and a second position whereat the backside is not in contact with the first pivot limiting structure;
• and
• a second louver operably connected to the second vertical rotor and including a front side, and a back side, and pivotable between a third position whereat the backside is in contact with a second pivot limiting structure, and a fourth position whereat the backside is not in contact with the second pivot limiting structure, wherein the first louver pivots about a first pivot axis that intersects the first vertical rotor.