this post was submitted on 01 Oct 2023
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[–] [email protected] 19 points 2 years ago (1 children)

On devices with OLED screens, the more pixels on the screen are lit up, the more power the screen consumes. So on the majority of smart phones these days, dark mode will slightly reduce energy consumption. Devices with LCD screens will likely show no difference, and we're talking a fairly negligible amount of power here anyway.

[–] [email protected] 1 points 2 years ago

So you are saying nestle could contribute more by not using child labour in African cocoa plantations?

[–] [email protected] 5 points 2 years ago (2 children)

According to a Purdue University Study dark mode can save 3 to 9% of your battery if you're on auto brightness. Let's say your average phone uses 15Wh per day (5.475 kWh per year). Let's say 5 billion people use smartphones. That's around 30 TWh for total yearly smartphone consumption.

So if everyone was using dark mode, it could save around 0.8 to 2.5 TWh a year in the best case scenario. But that is if everything on your phone was dark mode. Not sure how much time people spend browsing websites percentually.

That's around 0.1 to 2.7 times the daily electric energy production of all nuclear power plants.

The world electricity production is around 23000 TWh per year, so you could save around 0.0036% to 0.01% of yearly energy consumption by switching everyone to dark mode.

Such impactful, much environment, wow

[–] [email protected] 3 points 2 years ago

Now calculate how many nestle wells that steal people's water that makes.

[–] [email protected] 2 points 2 years ago

that study talks about oled displays btw, shit's not gonna change for regular backlit devices

word of the day is greenwashing, fucking engrave it into your brain -- get the words for the phenomena and all that shit

[–] [email protected] 3 points 2 years ago

Your first mistake towards sustainability is visiting Nestle in the first place. That company's existence is the opposite of sustainability.

[–] [email protected] 2 points 2 years ago (1 children)

What's up with giant corporations and guilt tripping people into switching to dark mode? I've heard win11 does this as well.

[–] [email protected] 2 points 2 years ago

It's pure marketing.

It's a trend, so the marketing goblins follow it.

[–] [email protected] 1 points 2 years ago

Minecraft furnaces use more energy than the dark mode on the nestle website saves

[–] [email protected] 1 points 2 years ago

Guess what? Cycling dark mode results in over 300 requests to nestle servers, so it does use power sending all those requests

[–] [email protected] 0 points 2 years ago (1 children)

On OLED screens dark mode does actually save power. My phone switches to dark mode when I turn on battery saving mode.

It probably doesn't matter much in the grand theme of this, but let's keep the criticism factual. God knows you don't need to make up arguments to criticize Nestle.

[–] [email protected] -1 points 2 years ago (1 children)

It only really does anything if the pixels can turn off completely. So the dark theme would have to feature full black backgrounds, not dark grey or anything like that.

[–] [email protected] 0 points 2 years ago (1 children)

That's not true. You can go upwards to 33% grey and it'll have the same effect as completely black if I recall correctly, but the all around energy saved by using dark mode isn't anything to write home about, really.

https://www.purdue.edu/newsroom/releases/2021/Q3/dark-mode-may-not-save-your-phones-battery-life-as-much-as-you-think,-but-there-are-a-few-silver-linings.html

[–] [email protected] 1 points 2 years ago

The Purdue study found that switching from light mode to dark mode at 100% brightness saves an average of 39%-47% battery power.

That's a lot actually. Only that much outside on sunny days, but still.