The increase in OPEC’s oil output in December has again undershot the rise planned under a deal with allies, a Reuters survey found on Thursday, highlighting capacity constraints that are limiting supply as global demand recovers from the pandemic. The Organization of the Petroleum Exporting Countries (OPEC) pumped 27.80 million barrels per day (bpd) in December, the survey found, up 70,000 bpd from the previous month but short of the 253,000 bpd increase allowed under the supply deal. OPEC and its allies, a group known as OPEC+, are gradually relaxing 2020’s output cuts as demand recovers […]