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  2. Sources of electrical energy - Wikipedia

    en.wikipedia.org/wiki/Sources_of_electrical_energy

    Friction is the least-used of the six methods of producing energy. If a cloth rubs against an object, the object will display an effect called friction electricity. The object becomes charged due to the rubbing process, and now possesses an static electrical charge, hence it is also called static electricity. There are two main types of ...

  3. Electricity generation - Wikipedia

    en.wikipedia.org/wiki/Electricity_generation

    Electricity generation is the process of generating electric power from sources of primary energy. For utilities in the electric power industry , it is the stage prior to its delivery ( transmission , distribution , etc.) to end users or its storage , using for example, the pumped-storage method.

  4. Renewable energy - Wikipedia

    en.wikipedia.org/wiki/Renewable_energy

    Water can generate electricity with a conversion efficiency of about 90%, which is the highest rate in renewable energy. [88] There are many forms of water energy: Historically, hydroelectric power came from constructing large hydroelectric dams and reservoirs, which are still popular in developing countries . [ 89 ]

  5. Geothermal energy - Wikipedia

    en.wikipedia.org/wiki/Geothermal_energy

    2010 estimates of the potential for electricity generation from geothermal energy vary sixfold, from 0.035 to 2 TW depending on the scale of investments. [4] Upper estimates of geothermal resources assume wells as deep as 10 kilometres (6 mi), although 20th century wells rarely reached more than 3 kilometres (2 mi) deep. [ 4 ]

  6. Hybrid power - Wikipedia

    en.wikipedia.org/wiki/Hybrid_power

    This hydrogen is subsequently used to generate electricity during periods when demand can not be matched by wind alone. The energy in the stored hydrogen can be converted into electrical power through fuel cell technology or a combustion engine linked to an electrical generator .

  7. 5 Ways To Generate Alternative Retirement Income - AOL

    www.aol.com/5-ways-generate-alternative...

    Traditional routes of generating money during retirement (as commonly suggested by financial experts) include taking advantage of your 401(k) and receiving -- and maximizing -- your Social Security...

  8. Earth battery - Wikipedia

    en.wikipedia.org/wiki/Earth_battery

    Henry Minchin, Student's Text-book of Electricity. Lockwood, 1867. 519 pages. pp. 477–485. (Alternative copy) Vassilatos, G. (2000). Lost science. Kempton, Ill: Adventures Unlimited. "Telluric Currents: The Natural Environment and Interactions with Man-made Systems". The Earth's Electrical Environment (1986), Commission on Physical Sciences ...

  9. Wave power - Wikipedia

    en.wikipedia.org/wiki/Wave_power

    Locations are shoreline, nearshore and offshore. Types of power take-off include: hydraulic ram, elastomeric hose pump, pump-to-shore, hydroelectric turbine, air turbine, [35] and linear electrical generator. Different conversion routes from wave energy to useful energy in terms or electricity or direct use. The four most common approaches are: