<b>Original caption</b>:  "<i><div lang="" dir="ltr" class="description" style="display:inline;">The Madaras concept for generating electricity from wind power is being re-investigated by the Energy Research and Development Administration.</div></i>"<div class="description mw-content-ltr de" dir="ltr" lang="de"><span class="language de" title="German"><b>Deutsch: </b></span> Prototyp eines <a href="https://de.wikipedia.org/wiki/Flettner-Rotor" class="extiw" title="de:Flettner-Rotor">de:Flettner-Rotors</a> für das von <a href="https://de.wikipedia.org/wiki/Julius_D._Madaras" class="extiw" title="de:Julius D. Madaras">de:Julius D. Madaras</a> in den 1930er Jahren geplanten Madaras Power Plant bestehend aus vielen solcher Rotoren auf einem kreisförmigen Schienensystem.</div>
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/37916456@N02">ENERGY.GOV</a>
circa 1977 <div style="display: none;">date QS:P,+1977-00-00T00:00:00Z/9,P1480,Q5727902</div>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/departmentofenergy/12366553865/">HD.11C.033</a>