The US Energy Department clarifies how to test light bulbs, but not how to make them more efficient

The US Energy Department is clarifying how manufacturers must test general service lamps, which are common light bulbs. These changes specify how to test colored bulbs, bulbs with multiple color settings, and bulbs with extra components.

These changes are minor technical clarifications. They do not change the actual energy efficiency standards for light bulbs, nor do they update the testing methods themselves. This means that while the rules for testing are clearer, the overall energy efficiency of light bulbs will not improve because of this document. The Energy Department still needs to review the actual test procedures for light bulbs, a requirement it has to meet every seven years.