Another "lets not look at the details" article:
http://www.autoblog.com/2015/05/15/dutch-solaroad-outperforming-expectations/Personally, I hate to see the cash evaporate into Solar Roadways when better usage could be easily be found with much higher environmental impact:
I am luky to study with some African students here in Antwerp, they get to pay the high fees due to their countries being in dire need of qualified port personnel.
(note, if you have IMO qualifications, young, single and need a well paid adventure, go to Africa)
In any case, we were talking about how in most of "black" Africa (their term), outside cities, that the lack of cheap after sundown light was a major source of lack of academic achievement.
To break it down, kids wake up do chores, go to school for 4/6 hours, do more chores till sundown.
Then they have time to study - if they have light.
If you are "rich" you can pay utilities, if not use a worn out Chinese generator on expensive black market fuel the last option is to study under a street light or sign.
Apparently, using candle light is awful, very hard to read modern print (compare a 2000's book with a 1930's book to get the idea) - and candles are expensive.
So, a good idea would be a small rootop PV, around 0.5m² to charge a small battery to sun a single 12watt CFD for 6 hours.
It would have to be a "ready to use package that could be anchored solidly, with a 5m extension with the bulb at the end.
THe materials would need to be plastic, fiber glass, and other valueless on the recycling market materials.
But, they told me, "don't give them away", sell them with for a token value WITH WARRANTY, so that users get a sense of propriety.
On the commercial side, they told me that there is a huge market for small PV (barn ventilation, insect destruction, fridges, well pumps, phone charging, WIFI points, cell towers etc) that don't need to be attached to a grid, be monitored closely or have to give a set result a day. Utilities suck there like here, but what here means someone overcharging you 30$, is a 48hours cut there, with attached dead livestock/crop.
One day, someone will sort out the right package, distribution, local manufacture (big tariffs in Africa) and earn megabucks.
While we will all be here saying "Aww shuckxs, shoulda thougta that".