• Redex@lemmy.world
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    21 hours ago

    I was about to comment how this number doesn’t make sense, but reading the article they mention the power savings for phones specifically is actually 2.2TWh per year, which might be realistic. The rest of the 14 TWh comes from landline phones (2.2TWh) and energy used to produce phones that would be saved (8.1 TWh) from the lifetime extension measures, that aren’t even related to the power efficiency of phones and won’t take place in the EU.

    However, even these numbers are overinflated when you take into account they’re using a PEF factor of 1.9, meaning they multiply the actual power usage by 1.9 to adjust for stuff like power transfer losses (only 5-10%) and the inefficiency of generating power from e.g. fossil fuels (because e.g. petroleum might only convert 40% of its potential energy to electricity), but when people typically talk about power usage they’re talking about the actual amount of electricity that needs to be generated, not this abstract representation of it, meaning that e.g. phone electricity savings are actually only 1.1TWh-1.2TWh.