Turn lights off when you don't need
them.
Use dimmers to save energy.
Use photoelectric cells or timers
to turn outdoor lighting on and off automatically.
Use the more efficient reflector bulbs,
especially for task and accent lighting. (Example: a 50W "R" bulb
can put as much light on an object as a 100W "A" bulb.)
Use energy-saving fluorescents wherever
possible. They give more lumens-per-watt (more light from
the electricity consumed) than incandescents. New compact
fluorescents produce light that is similar in color to that
of incandescents, making them an excellent choice for residential
use. They are now available in styles that can accommodate
a wide variety of decorative and functional fixtures.