According to Sea Intelligence, the IMO2020 regulations require the use of fuel oils containing less than 0.5% sulphur, such as Very Low Sulphur Fuel Oil (VLSFO), or alternative compliance methods like exhaust gas cleaning systems, known as scrubbers.
Scrubbers enable shipping lines to utilize higher-sulphur fuel oils (IFO380), which are cheaper. With a growing number of scrubber installations, there’s a rising proportion of vessels capable of leveraging cost savings by opting for cheaper regular...
https://container-news.com/scrubber-savings-reach-us13-billion-reports-sea-intelligence/