It definitely is.
When you think of a weaner barn, or when your chicks first come into a broiler barn and they're just tiny, you have to have that barn heated. It needs to be heated at a certain temperature, because you do not want to have a catastrophic event.
I think back to a couple of years ago when we had an issue with getting propane in from Sarnia, in through Ontario and into Quebec. We were within 24 hours of having some serious events occur.
So it needs to be robust. Sure, you can supplement it with other renewables at this time, but when you have a barn full of chicks or a barn full of weaner pigs, you cannot take that chance. To be ethical, you don't want to take that chance.