In Malaysia they break it down into tariff so the more you use, your bill will spike exponentially. The rate are RM0.218/kwh for the first 200kwh, then RM0.334/kwh for 201-300kwh, then RM0.516/kwh for 301-600kwh, then RM0.546/kwh for 601-900kwh, then RM0.571/kwh for 901kwh onward.
Heard it like years ago and wow, it finally came out. Can still remember the day they trying to remake Action 52 on TIGsource, glad they made an entirely new one, and the review are good too.