In recent years, the A-style incandescent bulbs was gradually phased-out as Energy Independence and Security Act efficiency standards are phased-in. The phase-out schedule began with the 100 watt incandescents in January 2012 and ended with new standards for the 40 watt incandescent in 2014.
Effective date for each phase listed below indicates the first date that non-compliant products were prohibited from being manufactured or imported in the United States. (California implemented these standards one year before the rest of the country).
Typical Current Lamp Wattage
| Rated Lumen Ranges
| Maximum Rate Wattage
| Minimum Rated Lifetime
| Effective Date
| California Effective Date
|
|---|
100 watts | 1,490 to 2,600 lumens | 72 watts | 1,000 hours | January 1, 2012 | January 1, 20121 |
75 watts | 1,050 to 1,489 lumens | 53 watts | 1,000 hours | January 1, 2013 | January 1, 2012 |
60 watts | 750 to 1,049 lumens | 43 watts | 1,000 hours | January 1, 2014 | January 1, 2013 |
40 watts | 310 to 749 lumens | 29 watts | 1,000 hours | January 1, 2014 | January 1, 2014 |