![]() 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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