How do CFLs result in less mercury in the environment compared to traditional light bulbs?
Electricity use is the main source of mercury emissions in Australia. CFLs use less electricity than incandescent lights, meaning CFLs reduce the amount of mercury into the environment. A 13-watt, 8,000-rated-hour-life CFL (60-watt equivalent; a common light bulb type) will save 376 kWh over its lifetime, thus avoiding 4.5 mg of mercury. If the bulb goes to a landfill, overall emissions savings would drop a little, to 4.2 mg. It is recommended that CFLs are recycled where possible, to maximize mercury savings.
