The European Union unveiled plans Thursday to make USB-C connectors the standard charging port for all smartphones, tablets and other electronic devices sold across the bloc, an initiative it says will reduce environmental waste but that is likely to hit Apple the hardest.

The move would represent a long-awaited, yet aggressive step into product-making decisions by the European Commission, the bloc’s executive arm. Apple, whose iPhones are equipped with a different port, has long opposed the plan, arguing that it would stifle innovation and lead to more electronic waste as all current chargers that are not USB-C would become obsolete.

The new legislation is likely to come into effect in 2024 because it first needs to be approved by the European Parliament and then adopted by manufacturers. Besides phones, it would apply to cameras, headphones, portable speakers and video game consoles.

Wireless chargers would not be affected, but the main change would come for iPhones, which currently have a proprietary Lightning charging port.

“What are we offering? More freedom, fewer costs,” and less electronic waste, Thierry Breton, the European commissioner for trade, said at a news conference Thursday.

Many European Parliament lawmakers welcomed the announcement.

“It’s completely absurd to ask Europeans to pay for a new charger every time, while our drawers are full of them,” said Saskia Bricmont, a Green lawmaker.

It also received swift criticism from some tech observers.

“This is a profoundly stupid way to approach product design and standardization,” a tech analyst, Benedict Evans, said on Twitter. “What happens in 5 years when someone wants to use a better connector?”

Still, if the legislation is enacted as proposed by the European Commission, it would become illegal to sell an electronic device without a USB-C charging port. Apple would have to switch to USB-C for its products sold across the bloc, a commission official said, noting that it already sells new iPads with such charging ports.

The legislative proposal is the latest setback for Apple in Europe.

Daniel Ives, managing director of equity research at Wedbush Securities, called the EU proposal a “gut punch to Apple” that would force the company to adapt its design and supply chain, and cost up to $1 billion.

“It kicks the battle between Apple and the European Union to the next level,” Ives said. “It’s like forcing Netflix to provide VCR screening alongside streaming.”

EU officials and lawmakers at the European Parliament have been advocating a common charger since 2009, when there were more than 30 charging options on the market, now down to three.

In a statement, Apple said that although it welcomed the European Commission’s commitment to protecting the environment, it favored a solution that left the device-side of the charging interface open for innovation. The European Commission said it would also require manufacturers to sell devices without chargers: If a bundled option remains available, an unbundled option of the same product would have to be offered, it said.