- Data centers are ridiculously efficient. The latest generation of data centers from the big cloud providers have PUE in 1.07 territory, which would've seemed like pie-in-the-sky ludicrousness even 10 years ago. Every CPU cycle that's done in a data center instead of on someone's client machine or on-prem server is a decrease in power consumption.

- 3D printers don't use very much power, and in any case, while 3D printing is going to be an ever-bigger deal in manufacturing, the 3D printing at home fad has already crested and is fading away, like 3D televisions. There's not going to be one in every home.

- Electric cars will indeed increase power consumption, but mainly when they are plugged in for the night, where there is already a lot of wasted power from e.g. nuclear plants that can't scale down at night. The total increase in necessary generating capacity and infrastructure upgrades won't be as big as you think.