The global technical CDR potential of BECCS by 2050 (considering only the technical capture of CO 2 and storage underground) is estimated at 5.9 mean (0.5–11.3) GtCO 2 yr–1, of which 1.6 (0.8–3.5) GtCO 2 yr–1 is available at below USD100 tCO 2–1