Based on the details provided, the startup is using the pyrolysis process to convert agro waste into liquid and gaseous fuels (with biochar as an additional product).
Pyrolysis has this unique property of being able to produce all three types of fuels (solid, liquid and gas) from a single source of biomass. If you are wondering why such an interesting process has not been used on a wide scale worldwide, it has been mainly owing to the technical challenges faced in scaling the process and getting the end fuels having good quality and reliable characteristics.
Companies that are able to stabilize pyrolysis and are able to produce high quality fuels with consistent metrics are looking at fairly sizable markets for their products, and Greenjoules appears to be one such company.
Team EAI wishes Greenjoules the very best!