What Does Homer Energy Do Free Course So
The question is: how long must a windmill generate energy before it creates more energy than it took to build it? At a good wind site, the energy payback day could be in three years or less in a poor location, energy payback may be never. A two-megawatt windmill contains 260 tonnes of steel requiring 170 tonnes of coking coal and 300 tonnes of iron ore, all mined, transported and produced by hydrocarbons. I didn’t write the text, the text itself is selectively quoted, and the argument it makes, taken in isolation, is meaningless.”“The concept of net energy must also be applied to renewable sources of energy, such as windmills and photovoltaics. This text is selectively quoted from an essay written by scientist David Hughes, and published in 2009 in an anthology edited by Thomas Homer-Dixon.On his blog Mr Homer-Dixon writes: “The poster is fraudulent. Yes, this is a free course so you can share this page with other people from your group.A viral post on Facebook claims that wind turbines cost more energy to produce than could ever be gained back from them.This is incorrect. Whenever it has the choice between two or more dispatchable power sources (batteries, generator, grid) it chooses the power source or combination of power sources that can supply the load and the required operating reserve at the least cost.Enroll to use HOMER software to simulate microgrid performance.
This level was “favourable” in comparison to fossil fuels, nuclear and solar power.Many wind turbines have a designed service life of 20 years, although the actual operating lifespan of a turbine can vary depending on the environment they are in, and the maintenance strategy applied to them.
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