purchase solar street light with installation and maintenance. , solar-powered led light : >=20 w solar panel/module : * polycrystalline * rating >=75 w * with mppt controller * min 25 year warranty battery : 12.8 v, 18 ah, li po4, minimum 2 year warranty pole: * type : galvanized iron * height : 6 meters * outside diameter : >= 3 inch (>= 76 mm) * weight : >= 20 kg * thickness: >= 2 mm (+/- 10%) * warranty : >= 5 years dc cables : as per local requirement concrete support : as per requirement, to physically stabilize the system properly sensors : * light only from dusk/sunset to dawn/sunrise * inbuilt dimming during late night