According to Swiss energy law, local electricity utilities are required to purchase and compensate electricity generated by photovoltaic systems. The so-called feed-in tariff applies to solar power that is fed into the grid but not consumed on-site. Within the framework of the law, each utility in Switzerland can set its own tariff, leading to significant regional differences. The data shown here is provided by the Association of Independent Energy Producers, which collects, publishes, and compares this information. Further data and information can be found at pvtarif.ch.