How Sustainable is Your School? Questions to Ask Your Campus Administrator

At many colleges and universities, students have been the leading force behind sustainable water and energy use, waste generation and disposal, ecosystem conservation, sustainable food practices and many other examples of sustainable, ecologically-minded lifestyle. The philosophy of sustainability on campus has been constantly redefined and newly emerging notions are starting to embrace sustainability courses and environmental justice issues. How sustainable is your campus or school? Here are some credible questions you can ask your campus administrators. Some aspects of sustainability {Read More}

Solar Energy Facts

Here are some answers to the most common questions about solar energy. The sun represents an enormous nuclear reactor that converts its own mass into light particles or photons. Trillions of photons fill Earth’s atmosphere every second. The sun’s nuclear reaction consumes 4.2 million tons of mass per second. The Earth intercepts just 2 billionths of the sun’s energy output. On any particular day, 35,000 times the total amount of energy that people use reaches the surface of the Earth {Read More}

Geothermal Energy Pros and Cons

The promoters of geothermal energy emphasize its stable, renewable and versatile nature that can help us beat our precarious dependence on fossil fuels. The critics, on the other hand, dismiss it quoting its high capital costs and impacts from land subsidence. I this article we will juxtapose the most prominent geothermal energy pros and cons based on environmental and economic considerations. We will draw a conclusion based on the results of this inquiry. Geothermal Energy Pros: Environmental Considerations From an {Read More}

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Solar Energy Advantages and Disadvantages

The sun is at the helm of all life on the Earth. It is a virtually inexhaustible energy source that all living things, including us humans, need to grow and thrive. The sun converts its own mass into light particles known as photons. It charges the Earth with trillions of photons that fill the atmosphere each moment. The truth is, the sun supplies more energy in a single hour than all of humanity uses within one year. A French physicist {Read More}

How Much Can I Expect to Pay for a Home-Sized Wind System?

Q: I would like to become a home wind-farmer. How much can I expect to pay for a home-sized wind system?   A reliable, well-installed and productive home-sized wind system will cost between $20,000 and $200,000. Several factors will determine the cost of the system, namely your budget, your wind resource and your needs. If you are a wind energy novice, choose a knowledgeable dealer with excellent service. A good dealer will normally evaluate your energy habits and energy efficiency {Read More}

What is the Efficiency of Wind Power?

Q: What is the efficiency of wind power?   The power efficiency of the rotor is defined as a fraction of the entire accessible power that the wind blades are able to convert into useful energy. A wind turbine is not able to convert 100 percent of the energy from the wind because it is limited by the so-called Betz law. The Betz law says that at most 59.3 percent of the total wind energy can be extracted. The concept {Read More}

Solar Training Schools Directory

We strive to give you the most comprehensive directory of solar training programs in the US. We are frequently looking for more schools and programs to include, to ensure the directory is as complete and relevant as possible. Please let us know if you think we’re missing any schools or programs. Alaska Rocky Mountain Solar and Alaska Vocational Technical Center Do you know of a solar training course or school that is not listed here? Please let us know! Alabama {Read More}

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What is Geothermal Energy?

Geothermal energy is the energy harnessed from steam and hot water enclosed in the Earth’s crust. The word geothermal is a hybrid word that comes from “geo”, a Greek word meaning “Earth,” and “therme” meaning “heat.” The term geothermal energy denotes the combined thermal energy below the considerably cooler and thinner surface of the Earth, constituting about 260 billion cubic miles (1012 cubic kilometers) of rock at melting temperatures. Geothermal energy is generated from the formation of the planet, decay {Read More}