I could sort of see this if....
If you could discount the toaster to such a point, where the "extra" leccie bill is offset then I could see this being a thing.
For example (the numbers are ex culo, but just to make my point)
Say you make and sell a toaster costing $20 (cost), but would be $40 retail normally, that generates $1 per month, on average (For 21, not the consumer, who would get say 1c.), and uses $1.5 more electricity per month (which the consumer pays)
This means that every month, for the life of the machine, 21 make profit they would have made selling at $50. However, using these numbers the toaster would have to be running for just under 2 years to bring the profit back to where it was if they'd have sold it retail.