The other amazing thing in that tweet is that Norway uses more energy per capita than the next three countries combined? Double the USA? What is the explanation there?
The Tweet is specifically about electricity (kWh). It appears Norway uses mostly electricity in applications where other countries might use more natural gas (heating). This is likely because Norway has plentiful clean hydroelectric electricity, so they export their natural gas instead of burning it.
This inflates their electricity consumption numbers but given the mostly hydroelectric source and reduced fossil fuel burning it’s actually a net win.
The exclusion of hydro from "green" is of tactical nature. It's mature technology and without spectacular learning curves.
Iceland is small but has some power-hungry industries (that's the point, to produce Aluminum with cheap power), influencing their total.