Very interesting article! It is great to see these kinds of use cases for Blockchain emerging. I am currently looking into the possibilities of using Blockchain to reduce energy poverty. Perhaps we can find certain mutual aspects to this problem combined with food storage or agriculture.
For more info take a look at the articles I wrote on this:
Part 1 (problem definition):
Part 2 (what is blockchain?)
Part 3 (Blokchain and Energy)