Well, after several rounds of email between myself, EPCOR and the Office of the Electricity Consumer Advocate, I received information about the price that large commercial consumers of electricity pay in Alberta. The bottom line is, EPCOR says they pay essentially the same as small business and residential customers do. The big consumers apparently have to pay the "flow through price" for electricity, which is a price that can fluctuate on a second-by-second basis. Small business and residential customers pay a price that is set monthly, which is sort of an average of what the price has been for the month.
This surprises me. I really expected that the big consumers would get some kind of bulk rate. I asked straight out if there were any other discounts that these consumers received that small customers did not, and I was told no.
I have a hard time really believing this. I have become quite skeptical over the past couple of years, and suspicious of big companies and the 'spin' they put on everything. So it could be that I am just biased and that what EPCOR is telling me is actually the whole truth. But it just seems to run contrary to how the world operates these days, i.e., that big consumers get discounts for buying in bulk. I will have to put this matter on the 'back burner' (?solar oven?) for now and mull it over for a while.