Based on the increased laptop battery life I notice, so is using Edge on Windows.

It makes sense that both Apple and Microsoft can extract the best out of their OS + browser. There's no way Firefox can compete on such OS specific optimizations.

The new Edge based on Chromium performs better than Chrome with regards to power consumptions.

The old Edge was even better in terms of power consumption. Like a few extra hours of battery life.

It’s entirely possible that Safari is intentionally avoiding features that make it wake up-

I doubt that it does anything unavailable to other browsers, thats MS territory, because they wanted features. I feel like safari, by contrast, doesn't want to add features.

IME, Safari is no better than Brave in terms of battery, even when I’ve got hundreds of tabs open.

Besides, there's some precedent set in 1998 by a certain OS that "favored" their embedded browser over the competition, so I doubt Apple would want to tickle that fancy.

https://github.com/WebKit/WebKit

> Most users wouldn’t even notice that their choice to use Safari is responsible for their great battery life.

Seeing that MacOS has called out which apps are using the most energy for years, users can definitely tell which apps are using the most battery life.

But you are free to download the source code, compile and run it yourself to see if it is less battery efficient than the official builds.

If either browser’s manufacturer wants to see what Apple does to make Safari more battery efficient, they are free to look at the source code to WebKit.

I recall some feature I was using that ran in an inferior way to save power on Safari, so much so that I had to kill that feature and use a different API

Google's only incentive to make Chrome more efficient is when they start receiving heat (no pun intended) about bad performance.