I have a large project that requires 12 volt LED lamps or converted to LED for an off grid application with solar panels and batteries. I need the fixtures to be robust and not like a path light for residential, mostly to prevent theft. The job is to illuminate a walkway 6' wide x 1/2 mile. There are homes near by, so dark sky compliant is a must to minimize glare into the adjacent properties. Bollards seemed logical but I am open to other ideas. It must be LED or LED upgradeable to work with the solar panels. Ideas?