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
2013 European floods between 30 and 70 years. The bulk of the rain fell in only two days in Salzburg, Tyrol, and Vorarlberg, which is thought to have a return period of more than 100 years. Following the intense rain, sporadic showers and rainfall continued to raise the risk of further flooding but no rainfall of the intensity as that seen on 31 May-2 June occurred. Some Flash flooding occurred in the Polish capital Warsaw on 9 June, as a result of thunderstorms. The flood waters were expected to exceed the levels seen during the disastrous "once in a century" Central European floods