For residential, personal, and commercial applications …

Algae Biofuel: Tomorrow’s power?

Algae Biofuel Promises There are various species of algae. Under the right conditions, some of these can produce many times more oil per acre–up to 60% of the dry weight of algae–than even top producing conventional crops like canola (rapeseed) or the popular corn, partly because multiple crops of algae can be grown in the [...]

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What Are the Most Efficient Solar Panels? Factory Ideal versus Real World

Solar panel efficiency is generally rated by power in watts per square foot (or per square meter) of solar panel facing the sun. Generally and depending on the panel, commercially available panels are rated between about 6% and 20% in efficiency under standardized, somewhat ideal conditions. Solar cells generate electric current based on specific ranges [...]

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Homemade Wind Turbine: Power to People

Electromagnetism 101 for Wind Turbines Tape the bare end of an otherwise insulated copper wire to one end of a household AA dry cell battery–say the positive end. Tape the other bare end to one terminal of a flashlight bulb, say the old incandescent kind. Now tape a second copper wire end to the other [...]

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How to Make a Solar Panel: Keys to power

Want to know how to make a solar panel? Interested in saving some money on construction as well as on electric power bills, or interested in a cheaper way to get electric power remote from the grid? Solar cells–the building blocks of solar panels Given current technology, the only material to start making a solar [...]

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How Do Solar Panels Work? From Photons to Electric Current

How do solar panels work? They convert the energy of sunlight into electric current. From Photons to Protons Photons are particles of light such as are radiated from the sun and hit the earth. Light is like a particle, but it is also like a wave, and the wavelength and energy of a given photon [...]

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Wind Turbines Facts

Various wind turbines facts may be useful in determining whether or not investing in a wind energy system may be right for an individual or business. How wind generates electric power Think of how a ceiling fan or desk fan uses electric power from the wall outlet or grid … to power a rotating electric [...]

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Pros and Cons of Wind Energy: Cost to Benefit

At least since the first sail was hoisted from a boat or the first windmill ground grain into flour or pumped water uphill, the human race has considered how to harness wind energy for human purpose. Electric power and the use of wind to drive electric motors and create electric current is of more recent [...]

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Solar Energy Pros and Cons: To bite or not to bite?

Fossil Fuel Fracas The cost of oil, gas, and coal-dependent electrical power rises and fluctuates depending on (1) sources that are increasingly difficult to exploit, (2) rising demand (such as in populous China and India), (3) ongoing global political and military tussles, and (4) environmental costs. Nuclear power is an alternative that is not without [...]

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