Low voltage post lights use a lower life expectancy power source to light up standard brake light bulbs. These require lower voltage to power the light and save upon the utility bill. Low voltage post cap lights are very economical. They will require electricity unlike the solar powered lights, but very lesser amount of. Low voltage lights are also in order to install. Their wire runs to a transformer and isn't too hard to do. Bright lighting is good to have while you are busy cooking ...