[christophclarke]

Internal combustion engines operate at about 25% efficiency (per this paper, page 54)

https://deepblue.lib.umich.edu/bitstream/handle/2027.42/5764...

Coal power plants operate in the range of 34% efficiency

https://www.eia.gov/tools/faqs/faq.php?id=107&t=3

https://www.eia.gov/electricity/annual/html/epa_08_02.html

[Rebelgecko]

I wonder how much of that gets offset by transmission loss and the scooter's charging/discharging inefficiencies?

Not that that would be a reason not to use scooters in and off itself, since they're be posed to take advantage of grids that will hopefully become more and more renewable over time

[baroffoos]

Also they tend to be run very far away so you aren't getting a blast of pollution to the face every time you go outside