Privatized toll road: Really, really bad idea. Playing right into the hands of racketeers. Scotland has NO tolls, and I believe it's now part of the constitution that they are not allowed. England has one or two and they are intensely disliked.
Solar panels became very cheap because of a worldwide surplus. I think it was to be expected that once the surplus was used up that would change. Of course if there is panic buying because of impending price increases that won't exactly help price stability either.