Iss ok duckie, you're allowed! Plus, it was a good exercise for figuring out stuff for an emergency situation!! You passed! You got busy and figured out what to do 'just in case'!! It's all good!!
Heh, I was going to say "What kind of idiot power company would shut off power in the middle of winter???" Then I saw you were a Kiwi. (here in the northern hemisphere, even in the warm states it gets pretty cool this time of year)
Here is a link to an Amish incubator that uses a kerosene...