The true carbon cost of dark mode and whether it actually saves energy

Dark mode can save energy. It can also save nothing. In some cases it can even increase energy consumption. The outcome depends on three factors: the type of screen, the brightness level, and what the user actually does after switching. Why screen type changes everything Dark mode only affects energy consumption because of how the screen physically produces light. Different screen technologies respond very differently. OLED and AMOLED screens (organic light-emitting diode) illuminate each pixel