[Reelin]

Yes, watt hours or joules would work there but not watts. In general the figures all seem to assume 30 watts of power consumption at near-idle, which is completely ridiculous unless you happen to be using either a high end workstation or an antique.

The first page states an estimate of 50g of CO2 per visit, but I'm pretty sure reality is nowhere near that. At ~1000lbs CO2 per MWh for home electricity in the US (https://www.epa.gov/energy/greenhouse-gases-equivalencies-ca...), that's ~0.45g per Wh. My laptop only has a ~40 Wh battery, so I can't even be using anywhere near that - and that's already two orders of magnitude smaller.

Accessing from a phone it would be even less significant - for example, this S7 replacement battery only holds 12.7 Wh (https://www.amazon.com/Galaxy-Battery-Replacement-Samsung-Co...).

Scrolling down the project page about half way, it's displaying 0.15 kcal for me. That's ~0.17 Wh, which would equate to only being able to do that ~235 times on a single charge for my laptop. That's very obviously nowhere near reality.