This whole study is bullshit, electricity price in Kuwait is 6.5 cents per kWh for "undefined manufacturing" which is where bitcoin falls under, which means even while using the most advanced gear you are nowhere near the 1.4k cost mentioned in this "study".
Using the household prices it ranges from 1.6 cents to 5 cents, but long story short, once you pass 9 KWh a MONTH (which every asic miner will do in a few hours) you jump to the 5 cents tier, the 1.6 cents is for below 3 kWh a month, that isn't enough to mine a fraction of bitcoin, but ya, I understand why they had these numbers incorrect, most people who write such content are lazy, and they still get paid for writing nonsense like that.
I don't know the prices of other countries mentioned in the study, but I am sure that most will be incorrect, so it's safe to assume that this whole thing is just b.s.
Yup, the rest of the charts are bullshit. Most countries use
tiered (or step) pricing. Past a certain amount, you're forced to pay more than the typical range for a household. If you registered as a manufacturer/business, you pay in
time of use (depending on the time of day, 10PM-4AM is usually the cheapest). Some countries even use the mix of both,
tiered within TOU. There is a lot of things that need to take into account for electricity pricing, not just fixed rate.