Green revolution for the world’s shipping fleet comes not a moment too soon
- New regulations restricting the use of high-sulphur fuel have oil markets in a panic. But shippers are coming up with innovative solutions to power their vessels – essential for the future given that ships account for 90 per cent of world trade
Out of sight, out of mind, out on the open oceans, the world’s shipping fleet is bracing for an environmental revolution. It all comes down to “IMO 2020”.
The response of the International Maritime Organisation was, in 2016, to decide that the world’s shipping fleet would begin a massive clean-up from January 1, 2020 – hence “IMO 2020”. The deadline is now just nine months away.
And what will the impact be on the world’s shippers, already bleeding from low freight rates? The IMO 2020 rule will mean new costs. Shippers will not be allowed to use high-sulphur fuel, or sell it, so the challenge will be immediate.
Some of the initial responses have been simple and practical: by cutting their speed at sea, they can cut fuel consumption by about 10 per cent. Others say costs – and pollution – can be cut by up to 20 per cent by reducing the waiting time outside ports that can sometimes stretch to weeks, in particular for bulk carriers. A simple step here – but still not common practice – would be to allow shippers to book berths ahead of arrival.
Other efficiencies can come from more energy-efficient ship design. But since the working life of a ship can stretch to 30 years, it is design decisions being made in shipyards today that will determine the technology in use when the 2050 deadline – for the industry to cut emissions by 50 per cent – looms.
Others have installed scrubbers to capture sulphur as the fuel is burned. The cost is high, and disposal of sulphur remains a problem, but for many shippers, it is a stopgap they have to use if they are to comply with IMO 2020.
Global leader Maersk, which operates a fleet of 639 ships, has inevitably been in the vanguard of environmental solutions. Along with other Dutch multinationals including Shell, Maersk has committed itself to reducing all harmful emissions related to shipping. The container shipping company has also pledged to cut net carbon dioxide emissions to zero by 2050. As I write, one of Maersk’s 18,000 teu container vessels is taking the 40,000km round trip between Rotterdam and Shanghai on a biofuel blend (used cooking oil supplied by Shell). The aim is to reduce carbon dioxide emissions by 1.5 million kg and sulphur emissions by 20,000kg.
Further down the track, the industry is exploring a dizzying array of new technologies to power their ships, and to meet the 2050 target. Some are exploring battery power. Others, hydrogen or ammonia fuel cells. Still others are designing sails.
Whatever the ripples across the world’s shipping industry, the IMO 2020 initiative provides a stimulus, and not a moment too soon. The global economic recovery pushed up energy demand by 2.3 per cent in 2018, according to the International Energy Agency. Although renewables grew at double-digit pace, 70 per cent of the uptick in demand was met by fossil fuels, adding 560 million tonnes of carbon dioxide emissions, and lifting the global total to a record 33 billion tonnes.
Shipping may account for just 3 per cent of the world’s greenhouse gas emissions at present, but without urgent action, the figure is set to increase dramatically if sea transport – which currently accounts for 90 per cent of global trade – continues to grow at its present rate. The world’s ships may be out of sight, but they certainly cannot be out of mind.
David Dodwell researches and writes about global, regional and Hong Kong challenges from a Hong Kong point of view