An apparatus for generating electrical power, comprising: a generator for generating electrical power; a handle having a first end that is rotatably coupled to the generator, and a second end that is rotatable 360 degrees about the generator in a substantially vertical plane from a top dead centre (TDC) position, through a bottom dead centre (BDC) position, and back to the top dead centre (TDC) position; a weight that is moveable along the handle between a first position, a piston arranged to move the weight between first and second positions. The piston being operable to move the weight along the handle from the first position to the second position, such that the weight provides a mechanical advantage as the handle rotates from TDC to BDC due to gravity acting on it, whereby rotation of the handle drives the generator thereby to generate electrical power. A corresponding method is also provided.