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 1kw÷54÷0.94kg×3000000000÷1000÷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.
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
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 1kw÷54÷0.94kg×3000000000÷1000÷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.
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