https://www.iea.org/reports/oil-2021 https://www.iea.org/reports/oil-2021 > In 2020, due to the Covid crisis and a decline in international trade, bunker deman

https://www.iea.org/reports/oil-2021 https://www.iea.org/reports/oil-2021 > In 2020, due to the Covid crisis and a decline in international trade, bunker demand is estimated to have fallen by 4.3%. As the new IMO rules were introduced, we estimate that higher sulphur fuel oil (HSFO) consumption more than halved, to 1.1 mb/d as ship operators switched to marine gasoil and very low sulphur fuel oil (VLSFO) to comply. In the same document, it estimates global demand for residual fuel oil is about 6 million barrels per day (compared to around 100 million barrels per day for all oil products). That's a lot of consumption for something that "isn't used any more"