Cielo is the holding I am most excited about, and it takes a lot of my willpower to not dump every penny I have into this thing.
I follow the carbon offset system and upcoming Clean Fuel Standards in Canada as part of my job, and I can tell you Cielo fits into both of those revenue streams extremely well.
For carbon offset credits, one of the first protocols being developed is projects that reduce methane emissions from landfills. Exactly what Cielo does while creating a product which will fit into the Clean Fuel Standards.
These are exciting because partnerships can be developed to take credits from Cielo, such as this:
https://www.bloomberg.com/news/articles/2020-10-28/iowa-farmer-finds-fortune-in-selling-carbon-credits-to-shopify
If such partnerships develop, it becomes in the other companies best interest for Cielo to expand to be able to produce more credits.
The amount of cheap feedstock they have is functionally infinite. The demand for renewable diesel will also be functionally infinite, and only increase over time. Plastic is a world-wide problem that gets worse every day.
IMO Cielo will be producing the cheapest version of renewable fuel, as biodiesel requires engine modifications to run. It solves two problems at once while creating an amazing product.