Prepare to flick off your incandescent bulbs for good under new US rules that kicked in this week

abcnews.go.com:

Thomas Edison's pioneering incandescent light bulb, which cast illumination by heating a filament until it glowed, is fading into history

SAN FRANCISCO — Get ready to say goodbye to the once ubiquitous incandescent light bulb, pioneered by Thomas Edison more than a century ago. You can thank — or blame — new federal energy efficiency regulations that went into full effect Tuesday. Quite possibly without you even noticing.

The Energy Department rules, which date back to the Obama administration, have been whipsawed in the political process for years. Some conservatives and Republican lawmakers long denounced them for interfering with consumer choice and placing undue burdens on business. Under former President Donald Trump, the Energy Department scrapped them in 2019; the Biden administration subsequently revived them.

Yet by the time Aug. 1 rolled around, the critics had gone quiet, possibly because companies and consumers have already started voting for better lighting efficiency with their wallets.

Here's what you need to know.

WHAT CHANGES UNDER THE NEW RULES?

The rules establish strict new efficiency standards for bulbs used in homes and businesses and bans the manufacture and sale of those that don't meet those requirements. Practical incandescent bulbs, which trace their origin to an 1880 Edison patent, can't meet those standards. Neither can halogen bulbs. The rules also ban imports of less efficient bulbs.

But those requirements carry a bit less heft than they would have several years back, largely because advances in LED technology and manufacturing have dramatically lowered prices and improved quality. LED stands for “light emitting diode,” a semiconductor device that converts electricity directly into light.