The projects are intended to boost winter electricity supplies by 2040, enabling an additional two terawatt hours (TWh) of seasonal production to be achieved.
However, only around 1.1 TWh can be generated by 2040, and 1.5 TWh once the plants have been completed.
The list of projects is to be adjusted following a survey conducted in the second quarter of 2025, the Federal Council said in a statement on Wednesday.
Some projects will be resized, while others will not be pursued – at least not immediately. Other projects are still in the preliminary study, planning or preparation phase, or awaiting a licence.
The Federal Department of Energy (DETEC) is due to present the possible options by the end of the year.
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Switzerland has increased maximum possible output from hydropower by 43 megawatts compared to last year, according to the Swiss energy ministry.
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