We have been doing our own R&D. This is a prototype streetlight that does NOT require an electrical supply. the next version is going to be smaller and even more powerful.
It has some very clever features and had been designed with the batteries to last a decade and a proximity detector to let the light go down to half brightness if no one is in the area.
We will be installing three as a test for a local housing association.
We expect to be installing them before the end of the month.