DOE Announces Report on Energy-Saving Efficiency of LED, CFL, and Incandescent Lamps

1, in the average life cycle, LED bulbs and CFL energy consumption is almost the same, about 3900 MJ per functional unit (functional unit refers to 20 million lumens hours), incandescent lamp energy loss 15100 MJ, equivalent to LED Nearly 4 times the energy consumption. In addition, if LED bulbs reach their performance goals by 2015, the energy consumed by their full life cycle will be reduced by about half compared to 2011.

2. The proportion of energy consumption of incandescent lamps, CFLs, and LEDs is approximately the same, followed by: use phase (more than 90%), manufacturing, and transportation (less than 1%).

3. In the calculation of LED life cycle energy consumption, the most uncertain part comes from the LED package. The estimated value of energy consumed by LED packaging ranges from 0.1% to 27%, with a weighted average of 6.6%. In other words, the energy consumed by the LED packaging process accounts for an average of 6.6% of the energy consumed by the LED throughout its life cycle.

Table 1: DOE Releases LED, CFL, and Incandescent Lamps Full Life Cycle Energy Consumption

Note:

1, due to the long life of the LED, based on the average life of the LED in 2011, the number of other lamps increased to ensure that the life of the roughly equivalent, so comparable. In the above chart, the incandescent lamp has 22 turns, and the CFL has 3 turns. In 2015, due to the prolonged service life brought about by the advancement of LED technology, it was calculated as 0.6 turns.

2. In the figure, red is the energy consumed by transportation, and blue is the energy consumed during the manufacturing process. Green is the main part, which is the energy consumed during use.