Most people think of Compact Fluorescent (CFL) bulbs as energy saving light bulbs. In order to produce the same amount of light as an old filament bulb, CFL bulbs use about one quarter of the energy. You can get the same light from a 13W CFL bulb that you would get from a 60W bulb.
You can save 75% of your lighting costs every month. That soon adds up – especially if you change all the bulbs in your house. CFL light bulbs do cost a little more than traditional light bulbs. However, they last somewhere between 8 and 10 times as long. Roughly speaking, you should go for around 10,000 hours before you have to replace a CFL bulb.
Light Emitting Diode (LED) bulbs are also becoming more widely available at reasonable prices. These use about 10% of the energy that you would require for the same light level from a filament bulb. The lifespan of these bulbs is estimated to be around about 50,000 hours – sometimes more. Apart from saving you a lot of money, they are absolutely ideal for lights that are in awkward to reach places – such as in lofts for example.