macOS 27
Battery impact of macOS Tahoe
macOS Tahoe is a small SwiftUI surface. The current Xcode 26 toolchain still ships a macOS 26 SDK while the app is expected to run on Darwin 27. Disable it if you want the lightest possible notch.
Last updated 2027-07-06
What costs energy
Live polling and media artwork cost more than a static chip. macOS Tahoe should sleep when unused.
How to lighten it
Turn off unused live activities in Settings so macOS Tahoe is not in the stack all day.