The IMO's newest upper limit, which took effect at the start of 2020, reduced the sulfur content of ships' fuel oil to 0.5 pct from 3.5 pct targeting at least a 50 pct reduction in GHG emissions from international shipping by 2050, relative to 2008 levels. To reach the IMO goal, ship owners can either install sulfur scrubbers to reduce emissions, or they can adopt a different, low-sulfur fuel. Both options carry an additional cost.
The NREL-directed research provides a starting point for establishing the feasibility of ships using biofuels, including the economics of marine "drop-in" biofuels weighed against the cost of burning heavy fuel oil (HFO), which presently accounts for roughly 75 pct of the fuel used.
The research concluded that, if shipping had no competition, the U.S. has sufficient bio-feedstocks for producing substantial amounts of marine biofuels to displace fossil fuels. With ships using 400 million metric tpy of fuel, a blend of 5 pt biofuels translates to about 5 billion gallons.
The research was funded by the U.S. DOE Bioenergy Technologies Office and by the U.S. Department of Transportation Maritime Administration.
Download Biofuel Options for Marine Applications: Techno-Economic and Life-Cycle Analyses report details HERE. (Source: NREL, May, 2021) Contact: NREL, Eric Tan, Snr. Research Engineer, www.nrel.gov
More Low-Carbon Energy News National Renewable Energy Laboratory, Marine Biofuel, Maritime Biofuel, nternational Marine Organization,
Maritime vessel CO2 emissions are calculated from the carbon content of the fuel consumed. Marine heavy fuel oil is approximately 86 pct carbon -- 3.15 tonnes of CO2 per tonne of fuel consumed. Since the carbon content of diesel (gas oil) is slightly higher, so too are the CO2 emissions per tonne of fuel consumed.
Marine Benchmark's proprietary algorithms estimate vessel fuel consumption by main and auxiliary engines, based on utilising hourly AIS data for all International Marine Organization (IMO) registered ships spanning a ten 10 year period. (Source: Marine Benchmark, PR, Trade Arabia News Service 3 Mar., 2021) Contact: Marine Benchmark, Torbjorn Rydbergh, CEO, www.marinebenchmark.com; International Marine Organization, www.imo.org
More Low-Carbon Energy News IMO, Marine Benchmark, Marine Emissions, Maritime Emissions, CO2 ,
"It's our job to make sure our customers are aware of these complexities. We need to use our knowledge to help them understand the impact of their shipping activities. The best way to do this is through a face-to-face dialogue. Then I can get a good understanding of what they are looking for and how it plays into their business model, and I can do my best to guide them based on the (emissions) data we can supply." -- Poul Woodall, IMO Director of Environment and Sustainability, Vice Chair, Green Ship of the Future
"Cutting (maritime shipping) emissions to net zero by 2050 in Europe is ambitious and challenging. This is why each sector needs to contribute, also shipping. The EU ETS is the right instrument for this, but we must do it properly. We want a debate with all the relevant stakeholders and an impact assessment outlining the possible consequences by June 2021. Then we can make our final decision. Shipping companies that have already heavily invested in reducing their emissions over the last decade must not be penalized. Our goal is to reduce CO2 emissions in shipping by 50 percent by 2030, compared to 2008 levels." -- Pernille Weiss, EU MEP EU Today, 12 July, 2020
Contact: International Maritime Organization (IMO), Stefan Micallef, Director of Marine Environment Division, +44 (0) 20 7735 7611, www.imo.org
More Low-Carbon Energy News Maritime Emissions, IMO, EU ETS,