The Horno Parish Hall got 1997 a roof integrated PV-Shingle system, to show, that the future is solar and renewable. 'Sunslates TM' of the Swiss comapny 'Atlantis Energiesysteme AG' were used. This system was introduced 23 years before Elon Musk with Tesla popularized the idea, that solar roof systems can play a major part in the pathway towards a solar future.
The whole village later on was not only flattened but became an open pit mining area for lignite coal.