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Installing solar panels only paid off in half of the 2,067 Swiss cities and communities analysed by the Swiss Federal Technology Institute ETH Zurich and University of Bern. There were also huge variations in profitability across locations.
In order to speed up the expansion of solar energy, the authors of the study recommend aligning the various rules and compensation rates across the country. “Switzerland is like a patchwork quilt in this regard. It’s unfair and incomprehensible that the profitability of solar installations varies so widely from region to region,” said Schmidt.