The OFEN has evaluated the development potential of the hydro power ^[1]. The results of the study are presented on the next table:

PROGNOS(2012) ^[2] has based its forecast for 2050 on the development potential under optimized conditions of OFEN(2012) ^[1] and it has done the next distribution between hydro river and hydro dam.

The next assumptions have been considered to calculate the net potential development for hydro river and hydro dam by 2050:

• Small hydro development is attributed to run-of-river.
• The LEaux production penalty is shared between hydro river and hydro dam depending on their net electricity production ^[3] in 2011:49% for hydro river and 51% for hydro dam.

The net development potentials for each technology are added to the 2011 net electricity production ^[3] to obtain the electricity production potential of Swiss hydro power plants in 2050:

For the cost model it is necessary to know how the new electricity production is obtained (new dams, new run of river plants, existing plants improvement and renovation). The next table has been created with the information from PROGNOS(2012)^[2] and OFEN(2012)^[1].

[1] OFEN (2012), Le potentiel hydroélectrique de la Suisse. Potentiel de développement de la force hydraulique au titre de la stratégie énergétique 2050

[2] Die Energieperspektiven für die Schweiz bis 2050. Energienachfrage und Elektrizitätsangebot in der Schweiz 2000 – 2050

[3] Statistique des aménagements hydroélectriques de la Suisse