The replacement compact fluorescent bulbs (CFL) use two-thirds less energy than traditional incandescent bulbs and burn much cooler as well.
The post office also works with the OSRAM SYLVANIA and Veolia Environmental Services to help customers recycle used CFL light bulbs.
Energy Star estimates that you will save $30 in energy costs for every incandescent bulb you replace with a CFL.
An 18- watt CFL used in place of a 75-watt light bulb will cost about $45.00 less over the lifetime of the bulb.
You need to be aware that CFL bulbs have some negative qualities.
These cilia appear to be attached to the cell-wall, being unaffected by plasmolysis, but Fischer states that they really are derived from the central protoplasm and pass through minute pores in cfl,8 the wall.