In Switzerland they don’t put you in jail for using too much energy to keep warm, neither they make you rat out the neighbours for doing the same.
The photo included in the article, showing a Swiss poster urging people to rat out their neighbors for failing to comply with energy efficiency measures, is fabricated. There are no such posters in Switzerland; the country’s energy ministry says the image is fake and that it has launched an investigation into the matter. The measures to keep temperatures below 19 °C in homes are voluntary, and there are no fines or penalties for possible non-compliance.