quite a few of the providers in Texas are exactly the opposite strangely.. they bill a surcharge for using less than some fixed KWh. i.e. I get charged $5 if i use less than ~500KWh in a month.
That's demand pricing, which is the other pricing option.
The two models I am familiar with:
- Normal tiered pricing. Low usage is cheap per kWh; high usage is expensive per kWh. This is because of inflexible production capacity.
- Demand rates. You pay a large fixed price, get a lower kWh price, and (this is key) contractually agree to never exceed X amperes. The higher X is, the higher your fixed price. This is a special plan structured for people who need a lot of power, but only at a modest rate of consumption- think baseboard heaters. Again, this model is constrained by inflexible production capacity.
Not the parent poster, but it works the same way in Thailand. Here in Bangkok first 150 kWh are cheapest, 150-400 are more expensive and 400+ is the most expensive tier.
Same up here in Washington for service to a single family residence through a single meter for customers of PSE [2].
[1] http://www.cpuc.ca.gov/NR/rdonlyres/6AF20251-011C-4EF2-B99D-...
[2] https://pse.com/aboutpse/Rates/Documents/elec_sch_007.pdf