Residential > Lighting > Compact Fluorescent Light Bulbs

Compact Fluorescent Light Bulbs

Compact Fluorescent Light Bulb

Why use CFLs?

Lighting makes up approximately 20% of the total electricity use in the US of which 15% is solely from household electricity use. The typical household still uses incandescent light bulbs, spending about $110 per year on lighting bills. Use of compact fluorescent light (CFL) can reduce this expense markedly.

How is light produced in CFLs?

CFL bulbs emit light that is a mixture of three phosphors exposed to ultraviolet light produced by mercury atoms. This process is unlike incandescent bulbs, which use filaments. Though CFLs cost more at the onset, they are tested to provide 8,000 hours of light as against the 500-2,000 hours from incandescent bulbs. This translates to about $36-45 of savings per CFL. Here is the math—an 18-watt CFL costing $15-20 saves you from purchasing ten ordinary 75-watt incandescent bulbs.

...Read more

Related articles

More articles

What others say

Highly efficient
Posted by greenplanet on 02 September 2010.
Overall ratings
Use of Compact Fluorescent Light Bulbs reduce your power bill to 1/3rd. Though the initial cost is higher, in the long term it is worth the money spen... Read more

Current Rating Score


View Detail Close

Ease of implementation 10.00


Ease of operation 10.00


Initial cost 3.00


Operational cost 10.00


Ease of availability 10.00


Amount of energy saved 10.00


Maintenance required 8.00


Improvement in home comfort levels 9.00


Eco-friendliness of the energy saver 10.00


Recommend an Energy Saver