Maybe I misunderstood my source. I watched a documentary where some 18 year old was mining bitcoin out of his parents basement. He said he was mining about 1 bitcoin a month and the electricity bill was about 30K. Maybe he lived in an area where the costs were high. Then you have communist China with warehouses full of computers. What do they charge themselves?
Either way, your info is tainted. Check this page which breaks down the electricity costs by country.
Estimated Electricity Cost Of Mining One Bitcoin By Country (powercompare.co.uk)
In Germany the cost is $32,152, in South Korea the cost is $53,000, in Spain it is $24,000, in the US: $10,700.......
Maybe my teenager lived in Germany. Then it all makes sense.