How can we bring solar power energy to our streets?

Suppose you had 1000 lights at 300 watts each in a small city. That would be a load equal to 300kW. To serve that at each point, you would need 1000 solar panels rated for at least 300watts and all the associated equipment (inverters and controls) installed at each pole. Economy of scale would dictate that you would be much more efficient to have a few large solar arrays at strategic locations feeding into the grid. Plus, easier to maintain a small number of locations rather than 1000 individual ones. You were correct in not discussing generating the power and storing it as those costs would amplify the cost tremendously. So, in effect, you would not be directly supplying the electricity used by the lights, but rather, you would be offsetting the energy used with solar. Based on my limited knowledge of solar availability, you would probably need to install approximately 600-1200 kW to actually generate enough power during the day to equal what will be used each night. That number would vary with the latitude that you are at as well as the number of sunny days in your area.

That'd be unviable, sorry, solar panels are extremely expensive to make although it is a good idea.