• 2019 June 20 16:18

    MAN Energy Solutions, Corvus Energy and DNV GL present results of HYCAS study on hybrid power generation

    Speaking at the CIMAC conference in Vancouver recently, Dr Alexander Knafl, MAN Energy Solutions, presented the results of a new study which examines the potential of hybrid power solutions in light of tightening regulations on greenhouse gas (GHG) emissions. The result of a cooperation between MAN Energy Solutions, Corvus Energy, and DNV GL, HYCAS examines the cost effectiveness of hybrid power solutions in a 1,700 TEU container feeder vessel.

    The pressure is on for the world to reduce its greenhouse gas emissions to avert a climate crisis. The IMO has set the maritime industry the ambitious task of reducing shipping emissions 50% by 2050, as compared to 2008. To work towards this challenge, MAN Energy Solutions, Corvus Energy and DNV GL studied the potential of using batteries in a container feeder vessel, to assess if it is possible to both reduce emissions and save operational costs.
    “Focusing on a container feeder vessel we were able to generate a typical propulsion power profile from vessel speed data, as well as an artificial time-resolved electrical load profile from the according electrical load table. These are the most important inputs for the MAN simulation tool ECO-ESS. Together with the specific battery and engine characteristics, it is possible to optimize the size of a battery in a hybrid propulsion system for the 2020 and 2030 scenario as an optimum of additional CAPEX and OPEX savings.” says Carina Kern, MAN Energy Solutions.

    The study explored two main scenarios, a vessel built in 2020 with a 500kWh battery system replacing one genset used for peak shaving and as a spinning reserve, and a vessel built in 2030, using a much larger 11MWh hybrid system for zero emission port entry and exit. Under the first scenario, with the hybrid power train resulting in an approximately 13% total cost for the vessel, payback times are as low as two to three years. However, the larger system increases the costs of the vessel significantly, meaning that only with a combination of lower prices for the battery system and higher fuel costs than today would the system be economically attractive.

    “It is our hope that these study results will increase cargo shipowner confidence in seeking out new energy solutions, as a good economic rationale already exists for supporting auxiliary loads with a hybrid configuration,” said Sean Puchalski, Corvus Energy. “As for the future propulsion scenario, perhaps we will not have to wait until 2030. We are already seeing strong demand for high capacity energy storage systems in passenger vessels. With the right leadership from cargo owners, we may see this translate to the merchant sector sooner than later.”

    “Energy storage has proven to be a highly successful way to reduce emissions for several categories of ships,” said Tommy Sletten, Corvus Energy. “If we speed up the adoption of green technology for vessels transporting goods, then we will really get results! Container vessels are often ‘low cost’ vessels and there is a reluctance to invest in green technology without other initiatives in place,” continued Sletten. “To reach the global goal of 50% carbon emission reduction by 2050, strict regulations and various governmental initiatives are required. Initiatives such as funding for new buildings, slot priority in harbors and reduced port fees for vessels with improved environmental systems will help greatly.”

    About DNV GL

    Driven by our purpose of safeguarding life, property and the environment, DNV GL enables organizations to advance the safety and sustainability of their business. We provide classification, technical assurance, software and independent expert advisory services to the maritime, oil & gas and energy industries. We also provide certification services to customers across a wide range of industries. Operating in more than 100 countries, our professionals are dedicated to helping our customers make the world safer, smarter and greener.


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