That Evil Wizards name?

Siatama.

On-demand (or surge) power generation like this is much different then base power generation like you get from solar, wind or nuclear (or theoretically fusion).

Long story short, any functional power grid needs both because generation has to match demand, and demand is uneven and wonky.

The most common surge power source is small natural gas plants. This is a replacement for those.

It presumes there will be extra electricity.

There’s always extra electricity. Eg. Solar generates power during the day, charges this “battery” and then powers lighting at night when demand is higher and people need to be able to see.

Linux gives you the ability to be your own system admin.

Most people don’t want or need that and have been steadily handing over more and more admin duties of their systems to Microsoft, Apple and Google since smartphones have become widely adopted.

But Linux is totally usable to anyone who had enough admin skills to run Windows XP and not get totally wrecked by malware. It’s just a matter of learning.