how often do they check your meters ? and how often do you pay the bill ? here, i have a bill every 2 months, and they check twice a year. as an option, you can have a monthly bill based on your average yearly consumption ; they divide it by 11, so the 12th month you pay whatever is left from your real use : either pay less (if you used less) and they adjust for the next year, or pay more (and they adjust higher...). other option is to report your use yourself before every bill, so you pay what you really use (i do that). but they still come twice a year to make sure you're not lying.