![]() If there is more interest in my particular situation, I will send another short post with further details.Ĭolin: the higher expected wind speeds you mention seem to correspond with the information on the wind map of the Netherlands. Ø Far and away the greatest factor in achieving this goal is conservation. Ø The penultimate key to the system is the largest battery system one can afford. Ø Using both wind and solar power provides a more reliable daily flow of electricity. There is obviously a bit more to this, so let me touch the high points: I have powered my home with a single 1-meter diameter wind turbine and two average-sized solar panels for nearly ten years. Just as there is only a finite amount of calories of energy in a gallon of fuel, and a pint of ethanol will NEVER produce the energy available in a pint of gasoline, there are only so many calories available for conversion from kinetic energy into electricity at a given wind speed within a given area.Īs for the 'conclusion" that the amount of energy available from a small wind turbine is inadequate to power a home, I beg to disagree. They can be ordered in our Lulu bookstore.Ī small wind turbine designed to produce electrical power for a dwelling unit requires operation in a high-wind area certainly greater than the 7 knots prevalent in this test. The printed archives now amount to four volumes with a total of 2,398 pages and 709 images. Read Low-tech Magazine with no access to a computer, a power supply, or the internet. Slow electricity: the return of DC power?.Thanks to Jeroen Haringman & Jaap Langenbach / Dutch readers can find a longer version of the article here. © Kris De Decker (edited by Vincent Grosjean) Wind power rules, but small windmills are a swindle. ![]() This comes down to 4,523 euro per household. This large windmill costs only slightly more than all small windmills combined (17 percent more, to be exact, or 190,000 euro), but it delivers almost 20 times more energy. It delivers 143,000 kWh per year, or an average power output of 16,324 watts. Windmills with a rotor diameter of 4 or 5 meters do not fit on most roofs, and are not easy to integrate in a built-up environment.Ĭlose to the test site stands a (relatively) large windmill with a rotor diameter of 18 meters. The turbines that score best, are simply the largest ones: However, if you combine these figures with the rotor diameter, it becomes clear that the concept of small windmills is fundamentally flawed. Simply multiply the above figures by three.Īt first sight, the results seem to indicate that the design of the windmill matters. Airdolphin : 9 windmills (157,932 euro)Īn average American household consumes almost 3 times more electricity than a Dutch household. Energy Ball : 47 windmills (202,288 euro) Listed below is the amount of windmills required, and their total cost, to power a Dutch household entirely using wind energy: 47 windmills to power a householdĪn average Dutch household consumes 3,400 kWh/year. Keep in mind that these windmills would perform considerably worse in a built-up area. Montana (18,508 euro) : 2,691 kWh per year or an average power output of 307 watts. Skystream (10,742 euro) : 2,109 kWh per year or an average power output of 240.7 watts ![]() Passaat (9,239 euro) : 578 kWh per year or an average output of 66 watts WRE 060 (37,187 euro) : 485 kWh per year or an average output of 55.4 watts WRE 030 (29,512 euro) : 404 kWh per year or an average output of 46 watts ![]() Airdolphin (17,548 euro) : 393 kWh per year or an average output of 44.8 watts Turby (21,350 euro) : 247 kWh per year or an average output of 28.1 watts Ampair 600 (8,925 euro) : 245 kWh per year or an average output of 28 watts Energy Ball v100 (4,304 euro) : 73 kWh per year, corresponding to an average output of 8.3 watts
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