One technology called pyrolysis is an attractive alternative in addition to bioenergy because of its carbon negative property and. Pyrolysis is a process by heating biomass without oxygen, which decomposes feedstocks into bio-oil, bio-gas and biochar and , all of which could be used for electricity generation. However, if biochar is not used to generate electricity in the pyrolysis plant but applied in the cropland as a soil amendment, net carbon dioxide (CO2) emissions could actually be achieved.