What are direct energy conversion methods for producing electric power?

: There are seven fundamental methods of directly transforming other forms of energy into electrical energy:

§  Static electricity, from the physical separation and transport of charge (examples: triboelectric effect and lightning)

§  Electromagnetic Induction, where an  electrical generator, dynamo or alternator transforms             generator kinetic energy (energy of motion) into electricity. This is the most used form for generating electricity and is based on Faraday's law. It can be experimented by simply rotating a magnet within closed loop of a conducting material (e.g. copper wire)

§  Electrochemistry, the direct transformation of chemical energy into electricity, as in a battery, fuel cell or nerve impulse.

§  Photoelectric effect, the transformation of light into electrical energy, as in solar cells

§  Thermoelectric effect, the direct conversion of temperature differences to electricity, as in thermocouples, thermopiles, and thermionic converters.

§  Piezoelectric effect, from the mechanical strain of electrically anisotropic molecules or crystals. Researchers at the US Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) have developed a piezoelectric generator sufficient to operate a liquid crystal display using thin films of M13 bacteriophage .

§  Nuclear transformation, the creation and acceleration of charged particles (examples: betavoltaics or alpha particle emission)

§  Ocean Wave Energy Conversion,in this method electrical energy is produced from floating thing(like ball type shape) over the waves these are connected to piston,duenwhich piston moves up and down motion and cause generator to run.