PREPARE TO FLICK OFF YOUR INCANDESCENT BULBS FOR GOOD UNDER NEW US RULES THAT KICKED IN THIS WEEK

Get ready to say goodbye to the once ubiquitous incandescent light bulb, pioneered by Thomas Edison more than a century ago.

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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?