Reducing shipping carbon pollution

With a long-term climate goal in place, the international shipping sector now needs to decide a comprehensive policy framework to get there.

Shipping’s climate impact

  • 90%The amount of all traded goods are moved by sea.
  • 2.6% Of global greenhouse gas emissions, or 1 gigaton per annum, are contributed by international shipping.

The International Maritime Organization (IMO), the UN agency that sets standards for the shipping industry, agreed in April 2018 an interim strategy with a goal of cutting shipping’s total emissions by at least 50% by 2050 from 2008 levels. Yet no overarching concrete policies have been decided.

A clear legal framework that combines ambition with flexibility can build trust and, importantly, increase investor confidence.

Environmental Defense Fund is advocating for a comprehensive policy framework to enable shipping to meet and exceed its long-term target, including interim targets or budgets; the creation of an independent scientific and technical body; and the introduction of carbon pricing and targeted recycling of revenues.

Interim targets

The IMO’s long-term emissions target for shipping is welcome. However, a series of consecutive multi-year carbon budgets could provide the sector with temporal flexibility on a pathway toward the target. A well-designed budget allows for “banking” (saving of surplus reductions) and “borrowing” (in case emissions in any given year exceed the budgeted average) across the years covered by each multi-year emissions budget. These flexibilities help underpin ambition, provided that they are matched with requirements for regular and transparent public reporting of emissions compared to budgets, and requirements that both the budgets and the reporting be implemented and enforced.

Independent body

To help ensure that interim targets and carbon budgets are set at an appropriate level, an independent technical body could be established to advise the IMO. The body would provide independent expert advice on the pathway for achieving the low carbon transition in shipping and would have the potential to frame the debate in terms of what is in the shipping industry’s best long-term interests. The IMO could take account of the advice of this body, and provide a public explanation for any decision that deviates from that advice.

The permanent technical body must be seen to be independent, and should be made up of individual experts from the fields of science, policy, engineering and economics. The IMO would appoint the members, but they would not represent any IMO delegation. To maintain public confidence, the body would need to operate with transparency and its members be subject to requirements to avoid even the appearance of a conflict of interest. The value of an independent entity to provide expert advice and guidance has been seen in both international and national law – for example, Technical Economic Assessment Panel (TEAP) to the Montreal Protocol has been invaluable in providing independent advice.

Carbon pricing

Solutions to address greenhouse gases from shipping already exist. However, these solutions are more expensive to deploy than traditional more polluting technologies used by the sector. A carbon price would create incentives to develop and deploy these existing and new emerging solutions.

One way to price carbon from shipping is to place a levy on bunker fuel. The revenue from this could then be used to re-distribute funds raised within the sector. If matched with enforceable emissions budgets, this could help create a virtuous, re-enforcing cycle of investor confidence. Leading to reduced costs, as lessons are learned and economies of scale unlocked. The independent scientific and technical panel could provide advice on the carbon price level and other emerging issues, including how to account for alternative fuels. This would help ensure that the multi-year carbon budgets are met.

The IMO already has a common financial mechanism under the International Oil Pollution Contribution Fund. Common financial mechanisms have been proven to assist emissions reduction elsewhere, with the Norwegian NOx Fund reducing nitrogen oxide emissions from shipping by 16,000 tons between 2011- 2017. The IMO could administer a financial mechanism using the monies generated from a carbon price. This would aim to support technology deployment in the shipping sector assisting low-carbon technology deployment for countries with particular need for support.

Our work

Conducting Analysis on the Legal Bases for IMO Climate Measures: We have published legal analysis on the legal feasibility to adopt a climate economic measure under an existing IMO treaty. This would allow a measure to be adopted at the speed required to tackle the urgency of climate change.