What Light To Use On A Yard light Pole?

I have one of those round black poles about 5″ tall in my yard and the electrical wire going to it was cut several years ago.

Some time back I put a solar light on top of the pole and it didn’t put out enough light to even mention.

How would I go about putting a Solar panel in the yard and a decent light that would put out something along the path of a 100 Watt bulb?

I could make a box to put a tractor battery in to store the energy.

To run another wire out there would mean going under a brick paver walkway.