Most people don't really pay too much attention on lighting as they feel that your light bulbs are not taking in a lot of energy. If you are always using your lights 24/7, you can anticipate that they could greatly affect your regular bills. If you have been making use of incandescent bulbs, substitute them with CFL or LED bulbs immediately.
It will also be better if you'll replace your lights if you still incandescent bulbs. These bulbs discharge almost 98 percent of their consumed energy into heat so CFL or LED bulbs are more power efficient.
Lighting has been ignored for some time since most folks believe that they could open their lights for 24 hours and their expenses will never be afflicted. Your bulbs could be small, but they consume a substantial amount of energy.
It is best to consider renewable energy options along with your current energy supply. Fundamentally, you can't rely entirely on renewable power options at this time to offer the energy requirements of your household.