The expected 2027 surge is driven largely by the restocking of oil reserves depleted during the Iran war. On the supply side, OPEC+ crude production increased by 900,000 bpd in September to reach 39.07 million bpd, bolstered by a production jump in Saudi Arabia to 8.37 million bpd from 6.24 million in August. These revisions follow a separate cut to this year's growth forecast to 400,000 bpd.
