"Symbium is part of a wave of software companies looking to speed up notoriously sluggish permitting timelines for renewable energy projects. These startups say approval processes can be tightened up dramatically with the help of automation software."

"CF’s executives decided to capitalize on that potential clean-energy demand and lean a bit less on fertilizer. One advantage for CF is that it can convert its ammonia to a low-carbon variety relatively cheaply, since the company already captures much of the CO2 generated. It just has to sequester that carbon dioxide instead of venting it to the atmosphere, as it does now."

"Fervo pumps cold water down an injection well, then over hot rock underground to another well, the production well. The path between is created by fracking, or fracturing the rock. The water heats up to nearly 400 degrees Fahrenheit (200 degrees Celsius) before returning to the surface. Once there, it transfers its heat to another liquid with a low boiling point, creating steam. The pressure of steam expanding spins a turbine to produce electricity like in a coal or natural gas-fired plant. The geothermal water, now cooled, is put back down the injection well to start the cycle again, in a closed-loop system."

"Graphyte’s first project in Pine Bluff, Ark., collects waste from two timber mills and a rice-milling operation. The company aims to start manufacturing its biomass bricks in January and burying them in July. By then, it hopes to be making roughly 140 pallets of blocks a day, enough to store 50,000 metric tons of carbon annually."

"The approach has two climate benefits, said CEO and co-founder Todd Brix. First, it uses CO2 that’s captured as an industrial waste from facilities such as biogas and bioenthanol producers or it’s pulled from the atmosphere using a direct air capture device. Second, it generates formic acid and other formate chemicals that can replace fossil fuels as a feedstock for fuels and other products."