In 2012, the US department of Energy implemented provisions of the 2007 Energy Independence and Security Act to phase out general-purpose incandescent lamps from the market by setting maximum power consumption criteria for general service lamps.
In addition to producing compact fluorescent lamps (CFLs) and self-ballasted LED lamps (SBLEDs), manufacturers also introduced ‘energy-saving’ halogen replacement lamps.
These lamps integrate a tungsten-halogen light capsule inside a glass envelope within an A-line glass envelope and lamp base, resulting in the same form factor as the legacy (traditional tungsten) incandescent lamps.