TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Method: The toroidal magnetic field is produced by either an annular magnet or more preferably an annular electromagnetic coil (7). The annular electromagnetic coil is manufactured from either conducting or more preferably superconducting material. The annular electromagnetic coil is surrounded by a core of highly permeable magnetic material such as soft iron. The central and outer portions of the conductive disc (5) are separated by a ring of insulating material (13). The conductive disc is spatially located so that the disc intersects both the forward and return magnetic fields of the toroidal magnetic field. The conductive disc is connected centrally to a freely rotatable drive shaft (6) so that the disc is also able to freely rotate about a central axis that is simultaneously perpendicular to the disc and coincident with the axis of rotational symmetry of the toroidal magnetic field. The conductive disc is connected to the drive shaft so that the disc is in near to the electromagnetic coil producing the toroidal magnetic field. The application of a motive force to the drive shaft causes the conductive disc to rotate and intersect the toroidal magnetic field. The rotation of the conductive disc through the toroidal magnetic field causes electric charges to be generated in the central and outer portions of the disc. The position of the brushes on the slide arm can be adjusted to and then fixed at the points of optimum current on the central and outer portions of the conductive disc, respectively. Another electrical contact brush is in contact with the drive shaft at the center of the disc and yet another electrical contact brush is in contact with the outside rim of the conductive disc. The brush in the central portion of the disc is connected to the brush on the drive shaft, and the brush in the outer portion of the disc is connected to the brush on the rim of the disc. Two electrical circuits are combined together either in series or in parallel, and the combined electric circuit has mechanism to measure and control the current before it is supplied to a water electrolysis unit. The homopolar generator is powered by wind energy. The rotation of the rotor wind blades by the force of wind rotates the drive shaft at a fixed, controlled speed. Preferred Components: The homopolar generator comprises mechanism to produce a toroidal magnetic field, mechanism to position a conductive metal disc in the magnetic field, and collector the electric current generated in the conductive disc when the disc is rotated through the magnetic field. The toroidal magnetic field is produced by either an annular magnet or more preferably an annular electromagnetic coil. The annular electromagnetic coil is manufactured from either conducting or more preferably superconducting material. The homopolar generator is powered by wind energy. A concrete or steel mast supports a generator housing containing a multiplicity of homopolar generators combined together either in series and/or in parallel. Mast also supports a rotor wind blade arrangement that is coupled to a common drive shaft running through the homopolar generators. The water electrolysis unit is a low pressure, low temperature electrolysis system that operates at 70degreesC and under normal atmospheric pressure conditions, and where the water electrolysis unit consists of a large plurality of electrolysis cells each containing an electrolyte comprising 25% potassium hydroxide solution. The homopolar generator comprises mechanism to produce a toroidal magnetic field, mechanism to position a conductive metal disc in the magnetic field, and collector the electric current generated in the conductive disc when the disc is rotated through the magnetic field. The conductive disc is of a thin and flat construction. Preferred Parameters: The electricity from a single homopolar generator has a typical voltage of 1-2 volts and a current at least5000 amps/m2.