There are 3 things you will need to know to select the best light bulb for your needs.Shades of Light has broken it down into understandable parts for everyone. All bulb cartons will have a "nutrition label" stating color, lumens and lumens per watt. Read on for the explanation.
Color- The familiar incandescent bulb gave a "warm white" and was 2700K. You can now get a "daylight" bulb that measures 5000K.
Lumens- Measures how much light is produced. For example to get 1600 lumens of light, you need a 100 watt incandescent bulb or a 25 watt LED bulb. Same brightness from both BUT much less energy used!
Lumens Per Watt- measures how much light you get for the energy consumed by a bulb. The 60 watts of energy used in an incandescent only gives 13 LPW-not very efficient. Contrast that with a 6 watt LED bulb that gives 100 LPW- much stronger light with much less power used.
Hope that helps all of us be more energy efficient!