You said revolution, that’s barely incremental. If you had googled “apartment electricity usage calculator” you would find many options that provide exactly the information you want without risk of hallucination.

Did you deliberately screw up the capitalization so thoroughly that it bears no resemblance to the standard abbreviations? Are you one of those people who writes about "mb" and "kb" for computers, too?

https://en.wikipedia.org/wiki/Kilowatt-hour

Obviously, LLMs are quite tolerant of typos, and even ignore mis-capitalization, or it may have at least tried to correct your improper usages.