 Plants that are the source of the biomass may be a carbon-neutral energy source.Successful sequestration is dependent on planting sites, as the best soils for sequestration are those that are currently low in carbon.The assumption that annual cropland provides greater potential for soil carbon sequestration than grassland appears to be over‐simplistic, but there is an opportunity to improve predictions of soil carbon sequestration potential using the information on the initial soil carbon stock as a stronger predictor of ∆C [change in carbon amount] than prior land use.