A generator with a vertically reciprocating piston, including: a cylindrical head defining an inner space and having mounted on an inner surface thereof: a solenoid defining an internal space, an upper rack, and a lower rack; a piston including: an upper part extending out of the head, and a lower part moveable within the inner space of the head, the piston adapted to move in a vertical, reciprocal movement under a force of fluid impacting airfoil blades coupled to the upper part of the piston, wherein at least two of the airfoil blades are each coupled to the piston. The lower part of the piston includes a series of magnets, and the vertically reciprocating motion of the piston causes the series of magnets to move in the vertically reciprocating motion within the internal space defined by the solenoid, so as to generate energy.