Charm Industrial [1] was recently mentioned on HN, with a novel approach to BECCS using grass to produce carbon-negative hydrogen. Grasses are the highest-yielding biomass per acre and thus the cheapest CO2 removal option. It also helps if you can make a profitable product from that biomass, like Charm is doing with hydrogen.

Not much info online, but we have a weekly climate newsletter [2], or you can ask me (cofounder)

[1] https://www.charmindustrial.com/about/

[2] https://charmindustrial.us18.list-manage.com/subscribe?u=aaf...