Indicator water

Production of hydropower

Hydropower is generally considered an environmentally friendly, carbon neutral energy source which does not have the risks associated with nuclear power. Nevertheless it does also have a negative impact: It reduces water volumes in the watercourses and can cause discharges to fluctuate massively and adversely affect fish migration. The expected average annual production shows the development and expansion of hydropower.

Assessment of the state
medium medium
Assessment of the trend
positive positive
Estimated mean production 2018: 36449 Estimated mean production 2017: 36327 Estimated mean production 2016: 36264 Estimated mean production 2015: 36175 Estimated mean production 2014: 36031 Estimated mean production 2013: 35913 Estimated mean production 2012: 35871 Estimated mean production 2011: 35817 Estimated mean production 2010: 35833 Estimated mean production 2009: 35601 Estimated mean production 2008: 35510 Estimated mean production 2007: 35480 Estimated mean production 2006: 35320 Estimated mean production 2005: 35293 Estimated mean production 2004: 34936 Estimated mean production 2003: 34886 Estimated mean production 2002: 34887 Estimated mean production 2001: 34829 Estimated mean production 2000: 34453 Estimated mean production 1999: 34318 Estimated mean production 1998: 33999 Estimated mean production 1997: 33745 Estimated mean production 1996: 33715 Estimated mean production 1995: 33659 Estimated mean production 1994: 33573 Estimated mean production 1993: 33163 Estimated mean production 1992: 33100 Estimated mean production 1991: 32885 Estimated mean production 1990: 32830 Estimated mean production 1989: 32652 Estimated mean production 1988: 32417 Estimated mean production 1987: 32382 Estimated mean production 1986: 32367 Estimated mean production 1985: 32033 Estimated mean production 1984: 32028 Estimated mean production 1983: 31996 Estimated mean production 1982: 31983 Estimated mean production 1981: 31967 Estimated mean production 1980: 31887 Estimated mean production 1979: 31825 Estimated mean production 1978: 31795 Estimated mean production 1977: 31726 Estimated mean production 1976: 31527 Estimated mean production 1975: 31324 Estimated mean production 1974: 30738 Estimated mean production 1973: 30552 Estimated mean production 1972: 30457 Estimated mean production 1971: 30409 Estimated mean production 1970: 30337 Estimated mean production 1969: 28732 Estimated mean production 1968: 28615 Estimated mean production 1967: 28165 Estimated mean production 1966: 27276 Estimated mean production 1965: 25845 Estimated mean production 1964: 24679 Estimated mean production 1963: 24410 Estimated mean production 1962: 23732 Estimated mean production 1961: 20996 Estimated mean production 1960: 20516 Estimated mean production 1959: 18833 Estimated mean production 1958: 17833 Estimated mean production 1957: 17004 Estimated mean production 1956: 15484 Estimated mean production 1955: 15328

Data for the graph: Excel
Source: Swiss Federal Office of Energy
Comment

The expected average annual production has risen continuously over the last ten years. This is a consequence of the fact that hydropower has increasingly been promoted to help secure energy supplies and that the conditions on the European electricity market have become more attractive. This development is likely to be boosted by the decision to phase out nuclear power (energy strategy 2050). In terms of energy and climate policy this development is welcome, but even more intensive use will then be made of surface waters. In order to keep the resultant negative impact as low as possible, the Federal Government has published recommendations for the drafting of cantonal strategies for protection and use in relation to small hydropower plants.

International comparison

The percentage of hydropower generated in Switzerland to cover domestic electricity supplies is very high compared with the rest of Europe.

Method

For existing plants, the expected average production at the power station generator (without recirculation operation) corresponds to the long-term average power generation possible in normal operation (current state of the hydropower plant). For new and upgraded installations, the expected average production is derived from a theoretical calculation which is based on hydrological data for an average year and the design and planned mode of operation of the hydropower plant. The expected average production does not take into account the average energy requirement of the pumps or replacement supplies.

 
Last updated on: 24.06.2019

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