wood heater design challenge by

I've been gone about a year (going through grief) but saw this and thought, yep, somebody on Permies might be interested.
a wood heater design challenge workshop.
Being able to use small branches and twigs as fuel is, to me, very worthwhile, rather than having to harvest whole trees!
I don't know if these folk having this design challenge would think about that aspect.

https://www.energy.gov/eere/bioenergy/articles/just-released-new-wood-heater-design-challenge-workshop-report

some of you folk might be interested in getting this newsletter from Dept. of Energy, Office of Energy Efficiency and Renewable Energy.  
Seems worthwhile reading to ME.  They're putting more $$$ into alternative and renewable energy nowadays.
https://content.govdelivery.com/accounts/USEERE/bulletins/35fff91

Thanks for your post. Have you ever been involved in the workshop before.  What specifically are they designing?  Have a blessed day Ray