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It now focusses on its potential to "harness the energy of locally produced feedstocks".

It also has fostered marketplaces for pesticide-free cannabis distillate, as brands confronted with adulterated feedstocks seek cleaner supply lines.

But experts think it could be challenging to obtain the feedstock, like corn grain or food waste, needed to make SAF.

“It’s our number one feedstock and input cost. If those feedstocks were to become significantly more expensive, so too would the overall cost of making fuel here in the United States.”

A chemical reaction can convert two polluting greenhouse gases into valuable building blocks for cleaner fuels and feedstocks, but the high temperature required for the reaction also deactivates the catalyst.