Hand cranked electrical power source
Hand squeeze generator
Hand-held work tool with a generator
Handheld generator
Harvesting energy from vehicular vibrations
Harvesting energy in remote locations
Heat pump method of concentrating fluids
Heat transfer apparatus
High efficiency energy converting apparatus and method thereof
Highway turbine
Home-use fuel cell system
Human powered electrical generation system
Hybrid drive system and method for controlling a hybrid...
Hybrid electric power generator and method for generating...
Hydrodynamic energy conversion apparatus
Hydrogen supply and utility systems and components thereof