Here in Australia we have a fairly complicated mess of privatised and government run energy organisations and their mode of operation varies regionally just to make things extra-confusing.
Where I live my current residential provider charges at $0.29 / kWh with planned +~10% yearly for the next forever, because of distribution network (grid) costs supposedly brought on by an over-saturation of solar installations. This is for the standard tarrif, there exists many other tarrifs that supply time-controlled electricity for pool pumps, bulk hot water heaters, etc. The cost of these can be as low as 50% of the normal $0.29 / kWh tarrif.
There are different ways that providers bill different non-residential customers here. Some commercial spaces are billed directly for their kWh use just like residential. So no luck running your 50 KW scrypt farm there...
Others like restaurants and industry locations can have completely different kinds of agreements. I have seen some where they are billed based on the daily minimum and maximum instantaneous consumption value. As for if this is a good deal or not depends exactly on how clever the person who signed up for that agreement was and how well they know their equipment. This is surely not the kind of thing you would be able to sign up for without being a registered business and perhaps a visit or two from your local energy supplier to see exactly what you needed the power for...
Out of curiosity, are there programs in place by the governments and electricity companies of your area to subsidize (encourage) residents to handle electricity programs themselves.
For example, if you operated a small solar farm, are you permitted to sell the electricity back to "the grid"?
