7. Use energy-efficient bulbs

Traditional incandescent bulbs use too much electricity and need to be replaced more often than their energy-skilled options. Halogen, CFL, and LED bulbs use 25 to 80 percent less electricity and are 3 to 25 times longer than incandescent bulbs. Energy-efficient bulbs have more advanced expenses, but in the long run, save money because they use low energy and live longer.
8. Take maximum advantage of sunlight

If your house faces the right direction, try to take the maximum advantage of this endless source of light. Keep the desk and reading areas near the windows to get natural light. You can also use mirrors in the house to reflect more daylight.