this post was submitted on 21 Sep 2023
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Do you have figures for that?
If something consumes 8w of power rather than 60w that's a 52w energy reduction.
According to this site 1kw produces 0.94kg of CO2 if a coal power station is used. https://slightlyunconventional.com/co2-per-kwh-of-electricity/
What percentage of power comes from coal globally varies massively, but let's say 30% average as it's probably more https://ourworldindata.org/grapher/share-electricity-coal
Around 7.5 billion lightbulbs are sold in the USA alone. https://lightbulbatoz.com/articles/how-many-light-bulbs-are-sold-each-year/
So let's make a conservative estimate of 30 billion new bulbs per year globally.
Gives a global annual reduction in co2 out put directly from lighting at 1kwΓ·54Γ·0.94kgΓ3000000000Γ·1000Γ·30%= about 17 metric killotone.
Shit yeah, drop in the ocean. That's cumulative though, so 17 last year, 17 this year, 17 next year.
Also led bulbs should last a minimum of 12 times longer than incandescent, so unless they use more than 12 times the co2 to produce there's going significant savings there.
Big numbers, but tiny in comparison to transport, which itself is small compared to industry
As I said at the actual calculation, it was shockingly small. The biggest part of the savings would come from the bulbs lasting at least 12 times longer (thus less embedded emissions from production and transportation).
Valid, but let's not move the goal posts; new light bulbs were specifically questioned and, thanks to someone's willingness to do some research and number crunching, light bulbs were specifically answered.
Let's at least give thanks before we vault off to the next, existentially exhausting, item on the list of climate change issues.
It's not like we don't have time. Right xuys? Right?
Keep in mind also that the energy you save was previously heating your house. so depending on where you live, how you heat your house and how well your house is isolated you could be saving close to nothing
I think to be honest that would very much be cancelled out by the fact it heats your house. So depending on where you live you may need to use power to apply additional cooling to remove that heat.