The Biopact website reports that more and more organizations are taking notice of the concept of “carbon-negative bioenergy”. Under this concept, bioenergy is produced with a “net negative carbon balance”. This means that the carbon dioxide released (due to the biofuel production process, and during the combustion/use of the biofuel) is much lesser than the carbon dioxide that is captured/consumed (during feedstock cultivation or during biofuel production). Carbon-neutral energy options, such as wind, solar, and hydro, have zero net carbon dioxide emissions. Fossil fuels are classified as “carbon-positive energy”. “Carbon-negative bioenergy” usually involves the production of the bioenergy/biofuel that is coupled to some form of CCS (carbon capture and storage) technology at some point in the biofuel production cycle. Two common examples of CCS technology are” (1) geosequestration, and (2) biochar. In geosequestration, the carbon dioxide that is released from biofuel production, is captured and pumped into geological formations below the earth’s surface. In the biochar technology, the biofuel is produced by pyrolysis (oxygen-free burning) of the biomass. The liquid and gaseous products after biomass pyrolysis can be further processed into biofuels, while the carbon-rich solid residue, called “biochar” is stored in the soil. The Biopact website mentions some organizations/publications which highlight the importance or benefits of carbon-negative energy, and sees this as a positive sign..