Limiting Engine Power to Reduce CO₂ Emissions from Existing Ships

The authors assess the effectiveness of engine power limitation (EPL) in reducing ships’ fuel use and carbon dioxide (CO₂) emission under the International Maritime Organization’s (IMO) greenhouse gas (GHG) strategy. The authors model the fuel and CO₂ savings of 10% to 60% EPL in 2018 and 2030 for oil tankers, container ships, and bulk carriers. These vessels produced more than half of the CO₂ from shipping in 2015. The authors find that, due to the continuing prevalence of slow steaming, EPL measures need to be robust to contribute to IMO’s climate goals. Models using 2018 ship operations highlight that: CO₂ reductions will not be proportional to EPL because ship engines are already operating far below their maximum power; Only 50%+ EPLs would be expected to significantly reduce CO₂ from all ships in 2018; Benefits will diminish if EPL is not required in new ships. In addition, 30%+ EPL policies could prevent an increase in future emissions if market conditions encourage a return to faster speeds.

• Record URL:
  https://theicct.org/sites/default/files/publications/Limiting_engine_power_02112020_0.pdf
• 
• Corporate Authors:

  International Council on Clean Transportation (ICCT)

  1500 K Street NW, Suite 650
  Washington, DC  United States  20005
• Authors:
  • Rutherford, Dan
  • Mao, Xiaoli
  • Osipova, Liudmila
  • Comer, Bryan
• Publication Date: 2020-2

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Working Paper
• Features: Appendices; Figures; References; Tables;
• Pagination: 16p

Subject/Index Terms

• TRT Terms: Bulk carriers; Carbon dioxide; Containerships; Engine performance; Exhaust gases; Fuel consumption; Oil tankers
• Subject Areas: Energy; Environment; Marine Transportation;

Filing Info

• Accession Number: 01743718
• Record Type: Publication
• Report/Paper Numbers: 2020-01
• Files: TRIS
• Created Date: Jun 23 2020 12:29PM