The railway solar project is deemed too difficult to maintain.
Jorio, Luigi (swissinfo)
Plans to carpet Switzerland’s railway tracks with solar panels to produce a supply of alternative energy have been derailed by the Swiss transport ministry.
Sun-Ways had proposed a CHF400,000 ($458,000) plan to install its solar modules on a roughly 100-metre-long section of track near Buttes in Val-de-Travers in the western Swiss canton of Neuchâtel.
The project called for the panels to be inserted on the sleepers between the tracks and this is where the idea ran into trouble.
Trains would have to stop running if panels need repairing and the transport ministry believes debris thrown off by trains would prove an unacceptable risk of damaging the panels, reports the CH Media group.
Sun-Ways did not comments to the media on the set-back but the rejection shows that converting to renewable energy in Switzerland is not straightforward.
Switzerland has set an ambitious target of zero net emissions by 2050, a plan that was endorsed by voters last month.
Increasing the network of solar panels is seen as one way of reaching the target, but only if photovoltaic projects can be realised.
Theoretically, solar panels could be installed on all 5,317 kilometres of the Swiss rail network for a total area corresponding to about 760 football fields, excluding areas in tunnels or ones exposed to little sunshine.
Sun-Ways says the national rail network could produce 1 Terawatt-hour (TWh) of solar energy per year, or about 2% of the electricity consumed in Switzerland.
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