Vorarlberg sustainable energy was produced than consumed. Green electricity from Vorarlberg is therefore also sold to the German Westallgäu, to Switzerland and to other Austrian provinces. The largest electricity producer in Vorarlberg is Illwerke AG. They produce 75% of the electricity in Vorarlberg, mainly by hydropower. Owing to their location isolated from the rest of Austria, most people in Vorarlberg speak a very distinct German dialect that other Austrians might have difficulty understanding, since the dialects in the rest of Austria form part of the Bavarian-Austrian language group, whereas the Vorarlberg dialect is part of the Alemannic dialect continuum. Alemannic dialects
Burgenland region. After the dissolution of the manors in the mid-20th century this group ceased to exist. In addition to Germans, Croats and Hungarians, Burgenland used to have substantial Roma and Jewish populations, wiped out by the Nazi regime. Before their deportation during 1938, the traditionally very religious Burgenland Jews were concentrated in the famous "Seven Communities" (Siebengemeinden/Sheva kehillot) in Eisenstadt, Mattersburg, Kittsee, Frauenkirchen, Kobersdorf, Lackenbach and Deutschkreutz, where they formed a substantial part of the population: e.g. in Lackenbach, 62% of the population was Jewish as of 1869. After the war, Jews from Burgenland founded the Jerusalem haredi neighbourhood of