No risk, no technology. This also applies to hydroelectric power and geothermal energy - renewable energies which play an important role in the Energy Strategy 2050. For example, the deep geothermal energy pilot projects in Basel and St. Gallen were discontinued after drilling and water injections triggered earthquakes. Water reservoirs also present uncertainties, particularly with regard to factors that increase the risk of dam failure. For this reason, scientists at the ETH Zurich have developed new methods for the assessment of risks associated with various technologies.