Piglet heater offgrid cold climate

My wofati build has been on hold here seems there’s always something else to do know everything is turning green!  I ended up accidentally getting a pregnant sow on my last batch of pigs I picked up.  No big deal make lemonade out of lemons.  I’m looking for ideas to help keep her and the piglets warm offgrid?   I use brinseas eco 20 on my chicks draws nothing.  I’m looking for the same sort of solution any ideas!  

So far the teenage chicks have been  helping out lending a feather.

Think the babies may be confused
“I’m a i chick or a pig”

Another pick of the three amigos.

I’m sad she accidentally got bred so early but I’m glad she’s been such a good mama.  3 days old and going strong!

I’m very thankful for this community, when something like this happens on our farm like to share.  I truly believe things happen for a reason.   If I can figure out a great piglet brooder lamp for a offgrid situation, I could farrow pigs early spring in the Yukon no problem.  My first thought is haybale fort lol!  But some kind of simple low tech safe heat source may still be needed.   Maybe a farrowing shelter/rocket mass heater!

Hey Byron:  Welcome to Permies!
Too bad your piggy mom farrowed early, but looks like her and the piglets are doing fine.
 
I have thought of using a RMH to keep a barn warmer in February when the cattle are birthing.
Biggest issue I see is durability. A cow can certainly accidently destroy a RMH and a pig could do some damage as well.
You would need to protect it from their unintended attention.
Otherwise it takes several hours to heat up a rmh core, but it could be done.

Your idea of a straw bale hut would work, as long as its dry. Although later the pigs would probably eat it...

Great ideas!

I think the answer was sitting in front of me all along!  I need to build a wofati for the pigs lol.  Paying extra attention to make it work in the extreme temps of the north.  Much like Sepp Holzers but beefed up.