I'm with Arch on this. Shiny clear glass probably isn't the best road surface.
It would be better if it was on rooftops.
I always wondered why petrol station canopies didn't have solar panels on. It is a huge flat surface that does nothing other then keep motorists dry when filling up so it might has well have fixed to tracking panels on it. It isn't like it would 'damage' the appearance of the petrol station.
Bus shelter roofs are the same deal, they could also be solar generating.
Surely the surface wouldn't need to be smooth? Crushed glass bonded with some kind of resin could provide grip and still transfer the light so the panels can do their job.
Efficiency is bad enough with perfectly clear glass. Use crushed glass and resin and it would be useless. This is where solar heating is better as it works in any light and is sometimes better with diffused light.
Maybe it would be better as a canopy over the cycle lane to keep some of the weather off the cyclists.
Maybe it could include induction charging for electric bikes too. That could encourage the use of electric assist cargo bikes and trikes for commercial use.
Better? Efficiency is one thing, but what is the point of heating up water and 'wasting' the energy?
Better? Efficiency is one thing, but what is the point of heating up water and 'wasting' the energy? I think the value of it on a small scale urban situations is vastly overstated. Solar heating has it's uses, but we live in a mild climate it's not like we should have the need for vast amounts of heated water in small homes. Gas is a precious resource, we shouldn't be wasting that either. We should really be heating up much less water whatever the source.