Our energy policy has been pretty trash. Our nuclear reactors are getting pretty old and we have to import way to much power.
Instead of building new reactors a totally populist vote has banned basically anything to do with nuclear and we can't build new plants.
Switzerland isn't a great place for wind or solar, nuclear is the clear solution and all we had to do is build like 1-2 more plants in the last 30 years, but no.
In terms of saving energy, systematically removing cars from cities would be a good idea. Granted, most cars are not electric but its still a good idea in general. And it would safe energy in multiple ways.
We have done a great job at driving modal share into trains and public transport. But we have not been nearly as good at driving modal share into bicycles.
In general we just simply made a mistake on relaying on France and Germany to much, both have also messed up their energy policy in different ways.