Compact Fluorescent Lights (CFL’s) have replaced the incandescent light bulb because CFLs give off the same amount of light, but use just 20% of the amount of electricity. That means you can light up your factory using one fifth of the electricity consumed by incandescent bulbs. It is advisable to use high voltage CFL only in high use areas of your factory i.e. production lines and work tables, and low voltage bulbs in other areas to further reduce electricity consumption.
It must be noted that CFLs are a temporary solution to energy-efficient lighting. Advancements in manufacturing technology of LED’s (Light Emitting Diodes) have driven the prices down to a level where LED bulbs are becoming more cost-effective than CFLs or incandescent bulbs with added benefits (link to LED’s).