Down-Lighting means lighting objects or areas from above.
This technique can act as your main light source providing light for circulation, a little bit of security and general "seeing". However you will better accomplish this using Area lighting techniques.
Down LightYour down-lighting setup may consist of either a single large flood light or several smaller sources to focus on a particular part of the landscape and/or provide general illumination, security or entertainment.
LED Reflector Lights
here is an example of an LED reflector spot light. Notice the large cluster of LEDs inside the housing. some gardeners will prefer to operate thier downlights on house power rather than solar battery power alone.
Now, with the yearly improvements in technology, house power may not be necessary, but I would being dishonest to not rasie the concern.
Solar Spotlight with Motion Detector
Yet another practical combination; LED lights, a solar panel and a motion sensor form a useful security device.