Hydroelectric power utilises the energy generated by our rivers and streams as they pass over natural or artificially created gradients. In Switzerland, small-scale hydroelectric plant denotes a plant with an average mechanical gross rated power of up to 10 megawatts (MW). In addition to small-scale hydroelectric plants constructed on bodies of flowing water, facilities that utilise the surplus pressure generated in drinking-water processing plants, for example, can also be used.

The advantage of hydroelectric power over technologies such as solar or wind power is that their output can be forecast with a good degree of accuracy. According to the Federal Office of Energy, small-scale hydroelectric plants could generate an additional development potential of around 2,200 GWh per year. This would correspond to around 40% of the government’s targets for expansion by 2030.

In developing its projects, Axpo’s new energies arm endeavours to give due consideration to environmental aspects. This means it is not always the most sensible idea commercially that is used, but the one that represents the best middle ground between financial and environmental objectives.